GB1501742A - Piston rings - Google Patents

Piston rings

Info

Publication number
GB1501742A
GB1501742A GB3076775A GB3076775A GB1501742A GB 1501742 A GB1501742 A GB 1501742A GB 3076775 A GB3076775 A GB 3076775A GB 3076775 A GB3076775 A GB 3076775A GB 1501742 A GB1501742 A GB 1501742A
Authority
GB
United Kingdom
Prior art keywords
rings
spacer
extension
pair
channel section
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
Application number
GB3076775A
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.)
Federal Mogul Bradford Ltd
Original Assignee
Hepworth and Grandage Ltd
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 Hepworth and Grandage Ltd filed Critical Hepworth and Grandage Ltd
Priority to GB3076775A priority Critical patent/GB1501742A/en
Publication of GB1501742A publication Critical patent/GB1501742A/en
Expired 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
    • F16J9/14—Joint-closures
    • F16J9/145—Joint-closures of spring expanders
    • 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
    • F16J9/066—Spring expander from sheet metal

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

1501742 Piston-rings HEPWORTH & GRANDAGE Ltd 16 July 1976 [23 July 1975] 30767/75 Heading F2T A piston-ring assembly comprises a pair of gapped annular cylinder-engaging rings 18, and a gapped spacer-expander ring which supports and spaces apart the annular rings 18, said spacer-expander ring comprising a plurality of loops 11, Fig. 2 (not shown), adjacent loops (11) being joined by a non-continuous central strip 12, each loop (11) comprising two pairs of oppositely directed limbs 13, 14, which are bent through right angles to form the opposite parallel sides of an outwardly-directed channel section, one limb 13 of each pair being connected at its outer periphery by a circumferentiallyextending part 15 to the corresponding limb 14 of the other pair, and at least one set of said circumferentially-extending parts being formed with an extension 16 beyond the adjacent limb 14, which extension 16 is bent about a radial bend line to extend across the channel section. The embodiment has a spacer-expander ring formed from a flat spring steel blank as shown in Figs. 1 and 2 (not shown), with an extension 16 from each side of the channel section to produce a gap small enough to prevent entry of oil scraper rings 18, as indicated in Fig. 4A (not shown). Cantilever arms 17 engage and load the rings 18 in an outward direction with a spring rate of, e.g., 100 lbs/inch.
GB3076775A 1975-07-23 1975-07-23 Piston rings Expired GB1501742A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3076775A GB1501742A (en) 1975-07-23 1975-07-23 Piston rings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3076775A GB1501742A (en) 1975-07-23 1975-07-23 Piston rings

Publications (1)

Publication Number Publication Date
GB1501742A true GB1501742A (en) 1978-02-22

Family

ID=10312830

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3076775A Expired GB1501742A (en) 1975-07-23 1975-07-23 Piston rings

Country Status (1)

Country Link
GB (1) GB1501742A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2590780B (en) * 2018-06-19 2022-12-07 Halliburton Energy Services Inc Metallic ring for sealing a downhole rotary steering piston

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2590780B (en) * 2018-06-19 2022-12-07 Halliburton Energy Services Inc Metallic ring for sealing a downhole rotary steering piston

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed