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GB2036249A - Tapered seal for engines or the like - Google Patents

Tapered seal for engines or the like

Info

Publication number
GB2036249A
GB2036249A GB7928765A GB7928765A GB2036249A GB 2036249 A GB2036249 A GB 2036249A GB 7928765 A GB7928765 A GB 7928765A GB 7928765 A GB7928765 A GB 7928765A GB 2036249 A GB2036249 A GB 2036249A
Authority
GB
United Kingdom
Prior art keywords
seal
groove
opposed
piston
subjected
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.)
Withdrawn
Application number
GB7928765A
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.)
Caterpillar Inc
Original Assignee
Caterpillar Tractor Co
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
Application filed by Caterpillar Tractor Co filed Critical Caterpillar Tractor Co
Publication of GB2036249A publication Critical patent/GB2036249A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
    • F16J9/12—Details
    • F16J9/20—Rings with special cross-section; Oil-scraping rings
    • F16J9/206—One-piece oil-scraping rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C19/00—Sealing arrangements in rotary-piston machines or engines
    • F01C19/02—Radially-movable sealings for working fluids
    • F01C19/04—Radially-movable sealings for working fluids of rigid material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
    • F16J9/06—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction using separate springs or elastic elements expanding the rings; Springs therefor ; Expansion by wedging
    • F16J9/064—Rings with a flat annular side rail
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
    • F16J9/12—Details
    • F16J9/20—Rings with special cross-section; Oil-scraping rings
    • F16J9/203—Oil-scraping rings

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

A seal (44, 46, 116) for a mechanism such as an engine compressor, expander, pump, or the like. The mechanism includes a housing (10, 100) defining an operating chamber (12, 102) and a piston (30, 104) is within the housing and mounted for movement therein. The piston has a first surface (36, 106) within the chamber adapted to be subjected to gas at elevated pressure and a second, adjacent surface (38, 108) at least part of which is not subjected to gas at elevated pressure. A seal receiving groove (40, 42, 118) is disposed in the piston second surface adjacent the part not subjected to high pressure and has opposed side walls (60, 62, 120, 122) one being near the first surface and the other (62, 122) being near the part (60, 120) of the second surface not subject to high pressure. The latter side wall diverges away from the first mentioned side wall and a seal is disposed within the groove and has a sealing surface sealingly engaging the housing. An opposed surface (68, 130) is on the seal and located within the groove and a surface interconnects the sealing surface and the opposed surface and faces the last mentioned side wall (122) and is adapted to substantially abut the same to seal against it. The seal is narrower at the opposed surface than at the sealing surface and further is sized to be somewhat laterally shiftable within the groove. As a consequence, desired gas energization characteristics can be provided.
GB7928765A 1978-04-12 1979-02-26 Tapered seal for engines or the like Withdrawn GB2036249A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US89555978A 1978-04-12 1978-04-12

Publications (1)

Publication Number Publication Date
GB2036249A true GB2036249A (en) 1980-06-25

Family

ID=25404688

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7928765A Withdrawn GB2036249A (en) 1978-04-12 1979-02-26 Tapered seal for engines or the like

Country Status (3)

Country Link
JP (1) JPS55500191A (en)
GB (1) GB2036249A (en)
WO (1) WO1979000919A1 (en)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2466389A (en) * 1949-04-05 Seal fob fluid pressure motor vanes
US442401A (en) * 1890-12-09 Piston engine
GB189509407A (en) * 1895-05-13 1896-03-21 George Rodger Improvements in the Packings of Pistons or analogous Parts of Fluid Pressure Engines or Apparatus.
CH217038A (en) * 1939-12-29 1941-09-30 Young Walter Hempstone Pistons with piston rings in pressure cylinders.
US3139233A (en) * 1962-04-30 1964-06-30 Curtiss Wright Corp Seal construction for rotary mechanisms
US3134600A (en) * 1962-08-30 1964-05-26 Curtiss Wright Corp Seal construction for rotary mechanisms
DE1475823A1 (en) * 1965-02-26 1969-03-06 Sabet Dipl Ing Huschang Cylinder seal for piston engines, especially for rotary piston internal combustion engines
DE1949695A1 (en) * 1969-10-02 1971-04-08 Bosch Gmbh Robert Radial seal with controlled partial admission for a rotary piston machine
US3966368A (en) * 1975-01-15 1976-06-29 Caterpillar Tractor Co. Insulated seal for engines
US3999906A (en) * 1975-09-22 1976-12-28 Caterpillar Tractor Co. Seals for rotary engines

Also Published As

Publication number Publication date
JPS55500191A (en) 1980-04-03
WO1979000919A1 (en) 1979-11-15

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)