[go: up one dir, main page]

USRE30476E - Devices for the fold-free stretching and holding of liquid crystal films - Google Patents

Devices for the fold-free stretching and holding of liquid crystal films Download PDF

Info

Publication number
USRE30476E
USRE30476E US05/953,283 US95328378A USRE30476E US RE30476 E USRE30476 E US RE30476E US 95328378 A US95328378 A US 95328378A US RE30476 E USRE30476 E US RE30476E
Authority
US
United States
Prior art keywords
frame
iaddend
iadd
stretching
collar
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US05/953,283
Inventor
Friedrich Jennen
Hermann Linden
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer AG
Original Assignee
Bayer AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19742428235 external-priority patent/DE2428235A1/en
Priority claimed from US05/703,152 external-priority patent/US4079529A/en
Application filed by Bayer AG filed Critical Bayer AG
Application granted granted Critical
Publication of USRE30476E publication Critical patent/USRE30476E/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
    • G01K11/12—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in colour, translucency or reflectance
    • G01K11/16—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in colour, translucency or reflectance of organic materials
    • G01K11/165—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in colour, translucency or reflectance of organic materials of organic liquid crystals
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/01—Measuring temperature of body parts ; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue
    • A61B5/015—By temperature mapping of body part
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K13/00—Thermometers specially adapted for specific purposes
    • G01K13/20—Clinical contact thermometers for use with humans or animals

Definitions

  • This invention relates to a device for the foldfree stretching and holding of liquid crystal films.
  • Liquid crystal films intended to be used for thermographic diagnosis of cutaneous or sub-cutaneous disorders, for example breast cancer tumours have to be stretched without any folds. At the same time, they must not be overstretched.
  • the most common method of stretching and fixing very thin liquid crystal films is to insert the films into smooth frames and bond them in position. This method is time-consuming and, once the film has been inserted, any errors in its positioning cannot be corrected.
  • the object of the invention is to provide a frame in which a liquid crystal film can be automatically stretched free from any folds without at the same time being destroyed, the film being fixed in position once it has been stretched across the frame.
  • a device for the fold-free stretching and holding of liquid crystal films consisting of a substantially rectangular outer frame having an .[.external.]. .Iadd.inner .Iaddend.centering edge for an insertable inner frame comprising an .[.inner.]. .Iadd.external .Iaddend.centering edge, wherein the inner boundary of the .[.inner.].
  • .Iadd.outer .Iaddend.frame is in the form of a stretching collar, the surface of the collar facing the .Iadd.inner .Iaddend.centering edge being bevelled, the lower edge of the stretching collar being rounded off and its surfaces being smooth, whilst the surface of the stretching collar facing away from the .Iadd.inner .Iaddend.centering edge is also bevelled, but at a steeper angle than that surface facing the .Iadd.inner .Iaddend.centering edge, the corners of the inner boundary of the outer and inner frames being rounded off, and wherein the outer .Iadd.inner .Iaddend.
  • frame comprises a stretching groove which cooperates with the stretching collar and the surface of the .[.outer.]. .Iadd.inner .Iaddend.frame directed towards the inner .Iadd.centering .Iaddend.edge of the .[.inner.]. frame is bevelled parallel to the bevel of the stretching collar.
  • the particular advantage of the device according to the invention is that a liquid crystal film may be placed loosely over the frame in its open position, after which the frame can be closed.
  • the liquid crystal film is carefully stretched by being drawn over the rounded edges of the stretching collar.
  • the surfaces are smooth (through the polished surfaces of the injection mould)
  • the liquid crystal film slides over the surface of the stretching collar during stretching without being damaged.
  • the corners of the inner boundary of the outer frame and inner frame are rounded off in such a way that the liquid crystal film cannot develop any fold in this zone either. After stretching, the film is kept in its stretched position by the frame.
  • clips are arranged on the outer frame which are designed to engage in corresponding openings formed in the inner frame.
  • a double adhesive tape is arranged on the inside of the outer frame. This is another safeguard against removal of the liquid crystal film from the frame.
  • FIG. 1 shows the two frame parts assembled to each other viewed from the under side.
  • FIG. 2 shows the lower .[.outer.]. .Iadd.inner .Iaddend.frame part in more detail and again viewed from the under side.
  • FIG. 3 shows a cross section through the .[.outer.]. .Iadd.inner .Iaddend.frame part along line C--D in FIG. 2.
  • FIG. 4 shows the upper .[.inner.]. .Iadd.outer .Iaddend.frame part from the under side.
  • FIG. 5 represents a cross sectional view along A--B.
  • FIG. 6 is a cross section along C--D in FIG. 4.
  • FIG. 7 shows a cross sectional view when the two frame parts are assembled.
  • the frame device according to FIG. 1 comprises two registering parts, the .[.outer.]. .Iadd.inner .Iaddend.frame 1 and the .[.inner.]. .Iadd.outer .Iaddend.frame part 2.
  • the .[.outer.]. .Iadd.inner .Iaddend.part 1 fits snugly in the .[.inner.]. .Iadd.outer .Iaddend.part 2.
  • the clips 3 projecting from the .[.inner.]. .Iadd.outer .Iaddend.frame 2 snap into corresponding apertures 3a in the .[.outer.].
  • the screen area 12 is defined (circumscribed) by the inner rim .[.5.]. .Iadd.14 .Iaddend.of .[.outer and.]. inner frame .[.parts.]. .Iadd.1. .Iaddend.The corners 9 of the inside rims of the outer and inner frame parts are rounded off at a radius of 20-25 mm.
  • the .[.inner.]. .Iadd.outer .Iaddend.frame part 2 is provided at its inner edge with a particularly formed bead or stretching collar 4.
  • Stretching collar 4 is defined by three faces: Face 8 having a steep slope seen from a direction perpendicular to the screen plane, followed by a rounded lower part or curved face 7 which changes over again into an ascending plane face (with respect to the screen plane 12).
  • the face 6 has a moderate slope compared with face 8. This particular contour of the peripheral bead or stretching collar is important for stretching the foil.
  • the angle between the face 8 and the surface normal of the screen plane 12 is about 5°.
  • the ascending face 6 includes with the surface normal an angle of about 45°.
  • the radius of the curved face 7 is about 1.2 mm.
  • the bevelled face 6 is turned to the inner centering edge 5 whereas face 8 is turned away from edge 5 and faces to the screen plane.
  • the inner centering edge or rim 5 is provided by the part of the .[.inner.]. .Iadd.outer .Iaddend.frame 2 which is bent 90° from the screen plane.
  • the profile of the .[.outer.]. .Iadd.inner .Iaddend.frame 1 is adapted to the profile of the .[.inner.]. .Iadd.outer .Iaddend.frame 2.
  • the registering relationship is shown in FIG. 7. Note in particular that the external centering edge 13 of .[.outer.]. .Iadd.inner .Iaddend.frame 1 is contiguous to the inner centering edge 5 of the .[.inner.]. .Iadd.outer .Iaddend.frame 2, and the peripheral stretching groove 11 cooperates with stretching collar 4 of the .[.inner.]. .Iadd.outer .Iaddend.frame 2, when both parts are assembled, shown in FIG. 7.
  • the inner rim of the .[.outer.]. .Iadd.inner .Iaddend.frame part 1 is rounded of as shown at 14.
  • the ribs 15 in the lower frame part are only serving for reinforcement. Openings 15a are provided for mounting of the assembled frames on holder for study of the liquid crystal films. Both frame parts are made for instance from polystyrene by injection molding technique.
  • a foil coated with liquid crystals is assembled within the two frame members in the following manner:
  • the foil is first loosely put onto the .[.outer.]. .Iadd.inner .Iaddend.frame member 1, the foil being cut to a rectangular format in such a manner that the foil projects over the inner rim 14 of .[.outer.]. .Iadd.inner .Iaddend. frame 1 and ends within face 16 (see FIG. 3) between the openings 3a for the .[.cramps.]. .Iadd.clips .Iaddend.3 and the external centering edge 13. Then the .[.inner.]. .Iadd.outer .Iaddend.frame member 2 is fitted to the .[.outer.].
  • a further improvement for securing the foil may be achieved by providing adjacent faces in the region beneath clip 3, for instance face 16 (FIG. 3) with double sided adhesive tape 17 (FIG. 7) so that the marginal zone of the foil sticks to either one of the frame parts 1 and 2.
  • the clips 3 provide for a reliable connection between the two frame members. With higher requirements the two frame members may also be welded to each other.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Medical Informatics (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Chemical & Material Sciences (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

A frame for holding and stretching liquid crystal films for thermographic diagnosis of cutaneous and subcutaneous disorders. A foil coated with the liquid crystal is held and stretched by the frame. The frame comprises an .[.outer.]. .Iadd.inner .Iaddend.member 1 which is secured to .[.inner.]. .Iadd.outer .Iaddend.member 2 by clips 3 registering in openings 8. The frame members are contoured so the stretching is effected without formation of folds.

Description

This application is a continuation of Ser. No. 581,323, filed May 27, 1975, now abandoned.
This invention relates to a device for the foldfree stretching and holding of liquid crystal films.
Liquid crystal films intended to be used for thermographic diagnosis of cutaneous or sub-cutaneous disorders, for example breast cancer tumours, have to be stretched without any folds. At the same time, they must not be overstretched. The most common method of stretching and fixing very thin liquid crystal films is to insert the films into smooth frames and bond them in position. This method is time-consuming and, once the film has been inserted, any errors in its positioning cannot be corrected.
The object of the invention is to provide a frame in which a liquid crystal film can be automatically stretched free from any folds without at the same time being destroyed, the film being fixed in position once it has been stretched across the frame.
According to the invention there is provided a device for the fold-free stretching and holding of liquid crystal films, consisting of a substantially rectangular outer frame having an .[.external.]. .Iadd.inner .Iaddend.centering edge for an insertable inner frame comprising an .[.inner.]. .Iadd.external .Iaddend.centering edge, wherein the inner boundary of the .[.inner.]. .Iadd.outer .Iaddend.frame is in the form of a stretching collar, the surface of the collar facing the .Iadd.inner .Iaddend.centering edge being bevelled, the lower edge of the stretching collar being rounded off and its surfaces being smooth, whilst the surface of the stretching collar facing away from the .Iadd.inner .Iaddend.centering edge is also bevelled, but at a steeper angle than that surface facing the .Iadd.inner .Iaddend.centering edge, the corners of the inner boundary of the outer and inner frames being rounded off, and wherein the outer .Iadd.inner .Iaddend. frame comprises a stretching groove which cooperates with the stretching collar and the surface of the .[.outer.]. .Iadd.inner .Iaddend.frame directed towards the inner .Iadd.centering .Iaddend.edge of the .[.inner.]. frame is bevelled parallel to the bevel of the stretching collar.
The particular advantage of the device according to the invention is that a liquid crystal film may be placed loosely over the frame in its open position, after which the frame can be closed. The liquid crystal film is carefully stretched by being drawn over the rounded edges of the stretching collar. By virtue of the fact that the surfaces are smooth (through the polished surfaces of the injection mould), the liquid crystal film slides over the surface of the stretching collar during stretching without being damaged. The corners of the inner boundary of the outer frame and inner frame are rounded off in such a way that the liquid crystal film cannot develop any fold in this zone either. After stretching, the film is kept in its stretched position by the frame.
In a preferred embodiment of the device according to the invention, clips are arranged on the outer frame which are designed to engage in corresponding openings formed in the inner frame. By virtue of this measure, the inner and outer frame are held together and the liquid crystal film is fixed in its stretched position. The outer and inner frames can only be taken apart using special tools. This measure precludes unauthorized removal of the liquid crystal film.
In another embodiment of the device according to the invention, a double adhesive tape is arranged on the inside of the outer frame. This is another safeguard against removal of the liquid crystal film from the frame.
One exemplary embodiment of the device according to the invention is described in more detail in the following with reference to the accompanying drawings, wherein:
FIG. 1 shows the two frame parts assembled to each other viewed from the under side.
FIG. 2 shows the lower .[.outer.]. .Iadd.inner .Iaddend.frame part in more detail and again viewed from the under side.
FIG. 3 shows a cross section through the .[.outer.]. .Iadd.inner .Iaddend.frame part along line C--D in FIG. 2.
FIG. 4 shows the upper .[.inner.]. .Iadd.outer .Iaddend.frame part from the under side.
FIG. 5 represents a cross sectional view along A--B.
FIG. 6 is a cross section along C--D in FIG. 4.
FIG. 7 shows a cross sectional view when the two frame parts are assembled.
The frame device according to FIG. 1 comprises two registering parts, the .[.outer.]. .Iadd.inner .Iaddend.frame 1 and the .[.inner.]. .Iadd.outer .Iaddend.frame part 2. The .[.outer.]. .Iadd.inner .Iaddend.part 1 fits snugly in the .[.inner.]. .Iadd.outer .Iaddend.part 2. When pressed against each other the clips 3 projecting from the .[.inner.]. .Iadd.outer .Iaddend.frame 2 snap into corresponding apertures 3a in the .[.outer.]. .Iadd.inner .Iaddend.frame 1 so that the two frame parts are firmly fixed to each other. The screen area 12 is defined (circumscribed) by the inner rim .[.5.]. .Iadd.14 .Iaddend.of .[.outer and.]. inner frame .[.parts.]. .Iadd.1. .Iaddend.The corners 9 of the inside rims of the outer and inner frame parts are rounded off at a radius of 20-25 mm.
Referring to FIG. 6, the .[.inner.]. .Iadd.outer .Iaddend.frame part 2 is provided at its inner edge with a particularly formed bead or stretching collar 4. Stretching collar 4 is defined by three faces: Face 8 having a steep slope seen from a direction perpendicular to the screen plane, followed by a rounded lower part or curved face 7 which changes over again into an ascending plane face (with respect to the screen plane 12). The face 6 has a moderate slope compared with face 8. This particular contour of the peripheral bead or stretching collar is important for stretching the foil. The angle between the face 8 and the surface normal of the screen plane 12 is about 5°. The ascending face 6 includes with the surface normal an angle of about 45°. The radius of the curved face 7 is about 1.2 mm. The bevelled face 6 is turned to the inner centering edge 5 whereas face 8 is turned away from edge 5 and faces to the screen plane. The inner centering edge or rim 5 is provided by the part of the .[.inner.]. .Iadd.outer .Iaddend.frame 2 which is bent 90° from the screen plane.
The profile of the .[.outer.]. .Iadd.inner .Iaddend.frame 1 is adapted to the profile of the .[.inner.]. .Iadd.outer .Iaddend.frame 2. The registering relationship is shown in FIG. 7. Note in particular that the external centering edge 13 of .[.outer.]. .Iadd.inner .Iaddend.frame 1 is contiguous to the inner centering edge 5 of the .[.inner.]. .Iadd.outer .Iaddend.frame 2, and the peripheral stretching groove 11 cooperates with stretching collar 4 of the .[.inner.]. .Iadd.outer .Iaddend.frame 2, when both parts are assembled, shown in FIG. 7. The inner rim of the .[.outer.]. .Iadd.inner .Iaddend.frame part 1 is rounded of as shown at 14.
Referring to FIG. 2, the ribs 15 in the lower frame part are only serving for reinforcement. Openings 15a are provided for mounting of the assembled frames on holder for study of the liquid crystal films. Both frame parts are made for instance from polystyrene by injection molding technique.
A foil coated with liquid crystals is assembled within the two frame members in the following manner: The foil is first loosely put onto the .[.outer.]. .Iadd.inner .Iaddend.frame member 1, the foil being cut to a rectangular format in such a manner that the foil projects over the inner rim 14 of .[.outer.]. .Iadd.inner .Iaddend. frame 1 and ends within face 16 (see FIG. 3) between the openings 3a for the .[.cramps.]. .Iadd.clips .Iaddend.3 and the external centering edge 13. Then the .[.inner.]. .Iadd.outer .Iaddend.frame member 2 is fitted to the .[.outer.]. .Iadd.inner .Iaddend.frame member 1 and both parts are pressed together so that the clips 3 are snapped into the openings 3a in the .[.outer.]. .Iadd.inner .Iaddend.frame 1. When pressing both frame members together, the clips are protruding through the foil. In this assembling step the foil is slightly pulled over the inner rounded rim 14 of .[.outer.]. .Iadd.inner .Iaddend.frame 1 and the contour faces of the stretching collar 4. By pressing the foil into the stretching groove 11 of the .[.outer.]. .Iadd.inner .Iaddend.frame part in the assembling step, the foil is moderately stretched in the screen plane. Surprisingly, it has been found that creases and warping can be strictly avoided in this way. This is a necessary requirement for obtaining a high image quality when using a liquid crystal foil for medical diagnostic purposes. On the other hand the stretching effect must not be too much in order to prevent the foil from tearing. Further to prevent tearing the contour faces 6, 7, 8 (FIG. 7) of the stretching collar 4 should be very smooth. This is easily achieved by polished surfaces in the injection molding form. Regarding the delicate problem of achieving an absolutely smooth foil surface in the screen plane, the frame members according to the invention constitute a unique solution for this particular object.
A further improvement for securing the foil may be achieved by providing adjacent faces in the region beneath clip 3, for instance face 16 (FIG. 3) with double sided adhesive tape 17 (FIG. 7) so that the marginal zone of the foil sticks to either one of the frame parts 1 and 2.
Normally the clips 3 provide for a reliable connection between the two frame members. With higher requirements the two frame members may also be welded to each other.

Claims (16)

What is claimed is:
1. A device for the fold-free stretching and holding of liquid crystal films, comprising a substantially rectangular outer frame having an .[.external.]. .Iadd.inner .Iaddend.centering edge and an insertable inner frame comprising an .[.inner.]. .Iadd.external .Iaddend.centering edge, wherein the inner boundary of the .[.inner.]. .Iadd.outer .Iaddend.frame is in the form of a stretching collar, the surface of the collar facing the inner .[.frame.]. centering edge being bevelled, the lower edge of the stretching collar being rounded off and its surfaces being smooth, the surface of the stretching collar facing away from the inner .[.frame.]. centering edge being bevelled at a steeper angle than that surface facing the inner .[.frame.]. centering edge, and wherein the .[.outer.]. .Iadd.inner .Iaddend.frame comprises a stretching groove which cooperates with the stretching collar and the surface of the .[.outer.]. .Iadd.inner .Iaddend.frame directed towards the .[.inner edge.]. .Iadd.stretching collar .Iaddend.of the .[.inner.]. .Iadd.outer .Iaddend.frame is bevelled parallel to the bevel of the stretching collar, the corners of the inner .[.boundry.]. .Iadd.boundary .Iaddend.of the outer and inner .[.frame.]. .Iadd.frames .Iaddend.being rounded off, the outer frame being insertable in the .[.inner.]. .Iadd.outer .Iaddend.frame by cooperation of the inner and external centering edges and cooperation of stretching collar and stretching groove.
2. A device as claimed in claim 1, wherein clips arranged on the .[.inner.]. .Iadd.outer .Iaddend.frame engage in openings formed in the .[.outer.]. .Iadd.inner .Iaddend.frame.
3. A device as claimed in claim 1, wherein a double adhesive tape is arranged on the inside of the outer frame.
4. A device as claimed in claim 2, wherein a double adhesive tape is arranged on the inside of the outer frame.
5. A device as claimed in claim 1, wherein said corners are rounded with a radius of 20 to 25 mm.
6. A device as claimed in claim 4 wherein said corners are rounded off with a radius of 20 to 25 mm.
7. A device as claimed in claim 2, wherein the clips are spaced from and disposed outwardly of the .[.inner.]. .Iadd.outer .Iaddend.frame stretching collar.
8. A device as claimed in claim 7, wherein the clips are disposed intermediate the .[.inner.]. .Iadd.outer .Iaddend.frame stretching collar and the inner .[.frame.]. centering edge.
9. A device as claimed in claim 6, wherein the clips are spaced from and disposed outwardly of the .[.inner.]. .Iadd.outer .Iaddend.frame stretching collar.
10. A device as claimed in claim 9, wherein the clips are disposed intermediate the .[.inner.]. .Iadd.outer .Iaddend.frame stretching collar and the inner .[.frame.]. centering edge.
11. A device according to claim 2, wherein said corners are rounded off with a radius of 20 to 25 mm and the clips are spaced from and disposed outwardly of the .[.inner.]. .Iadd.outer .Iaddend.frame stretching collar.
12. A device as claimed in claim 11, wherein the clips are disposed intermediate the .[.inner.]. .Iadd.outer .Iaddend.frame stretching collar and the inner .[.frame.]. centering edge.
13. A device according to claim 1, the inner frame being inserted in the outer frame, and a liquid crystal film being held in the frame by being drawn over the rounded edges of the stretching collar.
14. A device according to claim 2, the inner frame being inserted in the outer frame, and a liquid crystal film being held in the frame by being drawn over the rounded edges of the stretching collar.
15. A device according to claim 7, the inner frame being inserted in the outer frame, and a liquid crystal film being held in the frame by being drawn over the rounded edges of the stretching collar.
16. A device according to claim 8, the inner frame being inserted in the outer frame, and a liquid crystal film being held in the frame by being drawn over the rounded edges of the stretching collar.
US05/953,283 1974-06-11 1978-10-20 Devices for the fold-free stretching and holding of liquid crystal films Expired - Lifetime USRE30476E (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19742428235 DE2428235A1 (en) 1974-06-11 1974-06-11 DEVICE FOR WRAPPING AND HOLDING LIQUID CRYSTAL FILMS
US58132375A 1975-05-27 1975-05-27
US05/703,152 US4079529A (en) 1974-06-11 1976-07-07 Device for the fold-free stretching and holding of liquid crystal films

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
US58132375A Continuation 1974-06-11 1975-05-27
US05/703,152 Reissue US4079529A (en) 1974-06-11 1976-07-07 Device for the fold-free stretching and holding of liquid crystal films

Publications (1)

Publication Number Publication Date
USRE30476E true USRE30476E (en) 1981-01-13

Family

ID=27185964

Family Applications (1)

Application Number Title Priority Date Filing Date
US05/953,283 Expired - Lifetime USRE30476E (en) 1974-06-11 1978-10-20 Devices for the fold-free stretching and holding of liquid crystal films

Country Status (1)

Country Link
US (1) USRE30476E (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4485574A (en) 1982-02-05 1984-12-04 Societe Industrielle De Decoration Et Application S.I.D.A. Three-section hoop embroidery frame
US4532727A (en) 1982-02-26 1985-08-06 Filmosto-Projektion Johannes Jost Gmbh & Co. Frame, especially a quick-change frame for photographs
US4644629A (en) 1984-06-29 1987-02-24 Moore Iii Edgar F Embroidery framing method
EP0189381A3 (en) * 1985-01-14 1987-05-06 ELETTRONICA S.p.a. Apparatus for contact thermography with acquisition of images by means of a colour telecamera, digital conversion and processing of the output digital data
US4981092A (en) * 1989-11-17 1991-01-01 R. G. Barry Corporation Fabric clamping device for embroidery machines
US4984378A (en) * 1990-02-26 1991-01-15 Colman Margaret M Lighted embroidery hoop apparatus
US5174054A (en) * 1991-03-07 1992-12-29 Politi Margaret M Picture frame
USD392109S (en) 1997-02-25 1998-03-17 Kel-Gar, Inc. Bath mirror

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2760299A (en) * 1954-02-19 1956-08-28 Paul T Gable Stretching frame
US3408759A (en) * 1967-03-15 1968-11-05 Jerome H. Rotheraine Picture frame
US3596385A (en) * 1970-06-10 1971-08-03 Shizue Tachibana Embroidery frame
US3729045A (en) * 1971-01-13 1973-04-24 Adrian Inc Molded screen frame
US3885333A (en) * 1974-06-05 1975-05-27 La Wanda M Zachary Canvas Stretcher

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2760299A (en) * 1954-02-19 1956-08-28 Paul T Gable Stretching frame
US3408759A (en) * 1967-03-15 1968-11-05 Jerome H. Rotheraine Picture frame
US3596385A (en) * 1970-06-10 1971-08-03 Shizue Tachibana Embroidery frame
US3729045A (en) * 1971-01-13 1973-04-24 Adrian Inc Molded screen frame
US3885333A (en) * 1974-06-05 1975-05-27 La Wanda M Zachary Canvas Stretcher

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4485574A (en) 1982-02-05 1984-12-04 Societe Industrielle De Decoration Et Application S.I.D.A. Three-section hoop embroidery frame
US4532727A (en) 1982-02-26 1985-08-06 Filmosto-Projektion Johannes Jost Gmbh & Co. Frame, especially a quick-change frame for photographs
US4644629A (en) 1984-06-29 1987-02-24 Moore Iii Edgar F Embroidery framing method
EP0189381A3 (en) * 1985-01-14 1987-05-06 ELETTRONICA S.p.a. Apparatus for contact thermography with acquisition of images by means of a colour telecamera, digital conversion and processing of the output digital data
US4981092A (en) * 1989-11-17 1991-01-01 R. G. Barry Corporation Fabric clamping device for embroidery machines
US4984378A (en) * 1990-02-26 1991-01-15 Colman Margaret M Lighted embroidery hoop apparatus
US5174054A (en) * 1991-03-07 1992-12-29 Politi Margaret M Picture frame
USD392109S (en) 1997-02-25 1998-03-17 Kel-Gar, Inc. Bath mirror

Similar Documents

Publication Publication Date Title
US4079529A (en) Device for the fold-free stretching and holding of liquid crystal films
USRE30476E (en) Devices for the fold-free stretching and holding of liquid crystal films
US2527765A (en) Film mount
US5205059A (en) Display frame and protective container
US4282667A (en) Advertising poster display frame
US3434181A (en) Apparatus for tensioning sheet materials
US4028166A (en) Apparatus for laminating sheet material
US2837854A (en) Photographic transparency mount
JP2630548B2 (en) Packaging
CA1055589A (en) Device for the fold-free stretching and holding of liquid crystal films
US1977899A (en) Antifrost shield for windows
US2046362A (en) Windshield condensation preventer
EP0059489B1 (en) Frame, particularly alterable frame and small fastening block for assembling such a frame
US1915098A (en) Frost shield
JPH02254013A (en) Manufacture of vehicle window
JPS6024870Y2 (en) Temporary fixing structure of pressed edges
KR830001337Y1 (en) Adhesive tv filter
JPH07172165A (en) Mount structure of window glass for vehicle
JPH0739048Y2 (en) Cleaning disk for floppy disk head
JPH034341Y2 (en)
JPH07295102A (en) Slide mount
JPS6040456Y2 (en) case
JPS6266227A (en) Sticking method of polarizing plate
JPH0419538Y2 (en)
JPS62141893A (en) Diaphragm for speaker