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GB2218241B - Apparatus for use in detecting the presence of liquid - Google Patents

Apparatus for use in detecting the presence of liquid

Info

Publication number
GB2218241B
GB2218241B GB8908659A GB8908659A GB2218241B GB 2218241 B GB2218241 B GB 2218241B GB 8908659 A GB8908659 A GB 8908659A GB 8908659 A GB8908659 A GB 8908659A GB 2218241 B GB2218241 B GB 2218241B
Authority
GB
United Kingdom
Prior art keywords
detecting
liquid
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
GB8908659A
Other versions
GB8908659D0 (en
GB2218241A (en
Inventor
Arthur Leonard Lewis
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.)
Individual
Original Assignee
Individual
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 GB888809154A external-priority patent/GB8809154D0/en
Priority claimed from GB898901111A external-priority patent/GB8901111D0/en
Application filed by Individual filed Critical Individual
Publication of GB8908659D0 publication Critical patent/GB8908659D0/en
Publication of GB2218241A publication Critical patent/GB2218241A/en
Application granted granted Critical
Publication of GB2218241B publication Critical patent/GB2218241B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B32B29/002—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B29/007—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to a foam layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/028—Paper layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
GB8908659A 1988-04-19 1989-04-17 Apparatus for use in detecting the presence of liquid Expired - Lifetime GB2218241B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB888809154A GB8809154D0 (en) 1988-04-19 1988-04-19 Activity exercise mat
GB898901111A GB8901111D0 (en) 1988-04-19 1989-01-19 Apparatus for use in detecting the presence of liquid

Publications (3)

Publication Number Publication Date
GB8908659D0 GB8908659D0 (en) 1989-06-01
GB2218241A GB2218241A (en) 1989-11-08
GB2218241B true GB2218241B (en) 1992-08-26

Family

ID=26293791

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8908659A Expired - Lifetime GB2218241B (en) 1988-04-19 1989-04-17 Apparatus for use in detecting the presence of liquid

Country Status (1)

Country Link
GB (1) GB2218241B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1344037A (en) * 1971-04-15 1974-01-16 Potters Industries Inc Method of making porous polyurethane films and porous polyurethane films made thereby
GB1388208A (en) * 1971-12-09 1975-03-26 Bayer Ag Substrates for use in soil free cultivation
GB1464605A (en) * 1973-08-14 1977-02-16 Nippon Sheet Glass Co Ltd Humidity-sensitive sensor
GB2080197A (en) * 1980-07-15 1982-02-03 Smith & Nephew Ass Surgical drape fabric
GB2186722A (en) * 1986-02-17 1987-08-19 John Arthur Webb Detecting leakage of liquid from machines

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1344037A (en) * 1971-04-15 1974-01-16 Potters Industries Inc Method of making porous polyurethane films and porous polyurethane films made thereby
GB1388208A (en) * 1971-12-09 1975-03-26 Bayer Ag Substrates for use in soil free cultivation
GB1464605A (en) * 1973-08-14 1977-02-16 Nippon Sheet Glass Co Ltd Humidity-sensitive sensor
GB2080197A (en) * 1980-07-15 1982-02-03 Smith & Nephew Ass Surgical drape fabric
GB2186722A (en) * 1986-02-17 1987-08-19 John Arthur Webb Detecting leakage of liquid from machines

Also Published As

Publication number Publication date
GB8908659D0 (en) 1989-06-01
GB2218241A (en) 1989-11-08

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19980417