GB875620A - Improvements in or relating to sealing packings - Google Patents

Improvements in or relating to sealing packings

Info

Publication number
GB875620A
GB875620A GB13781/59A GB1378159A GB875620A GB 875620 A GB875620 A GB 875620A GB 13781/59 A GB13781/59 A GB 13781/59A GB 1378159 A GB1378159 A GB 1378159A GB 875620 A GB875620 A GB 875620A
Authority
GB
United Kingdom
Prior art keywords
piston
lip
sleeve portion
radial extension
thickness
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
GB13781/59A
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.)
Renault SAS
Regie Nationale des Usines Renault
Original Assignee
Renault SAS
Regie Nationale des Usines Renault
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 Renault SAS, Regie Nationale des Usines Renault filed Critical Renault SAS
Publication of GB875620A publication Critical patent/GB875620A/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
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3248—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports
    • F16J15/3252—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing With Elastic Sealing Lips (AREA)

Abstract

875,620. Stuffing-box substitutes; pistons. REGIE NATIONALE DES USINES RENAULT. April 22, 1959 [May 19, 1958], No. 13781/59. Addition to 853,996. Classes 122 (1) and 122 (5). A packing for use between a piston or piston rod and cylinder comprises a resilient operative portion 1 which is secured, such as by vulcanization, to an annular metal-reinforcing member 2 and consists of a sleeve portion having at one side of the member 2 a radial extension provided with a tapered sealing lip 9 stressed for relative sliding engagement with the cylinder, piston or piston rod as the case may be, the thickness of the sleeve portion being less than the average thickness of the lip and the contact sealing surface of the lip and adjacent portion of the radial extension being arranged to bear continuously against the members with which they coact over the entire axial length of the surface. As shown in Fig. 3, the radial extension has two tapered lips 8, 9 divergent in their free state so as to be stressed when in use. In order to prevent the resilient material of the packing, when subjected to fluid pressure in the direction of the arrow 51, from being compressed towards the lip 9 and thereby increasing the frictional resistance of the lip, the face 55 of the member 2 is formed as a frusto-conical plane surface; for the same reason, the thickness of the sleeve portion is reduced at its end 57, a similar reduction in thickness being made at the end 58 to reinforce the connection between the sleeve portion and member 2. A single annular groove 59 in the sleeve portion serves as a reservoir for lubricant. When applied on a single-acting piston, the resilient member 1 is provided with an enlarged extension 18, Fig. 6, to engage in a corresponding groove in the piston, and a buffer projection 22 may be provided between the lips 8, 9. For double-acting pistons, the radial extension may extend inwardly on both sides of the support member as shown in Fig. 9. In other constructions, the support member is of L-shape and two packing devices of the form described may be disposed side by side in a cylinder or on a piston.
GB13781/59A 1958-05-19 1959-04-22 Improvements in or relating to sealing packings Expired GB875620A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR875620X 1958-05-19

Publications (1)

Publication Number Publication Date
GB875620A true GB875620A (en) 1961-08-23

Family

ID=9360251

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13781/59A Expired GB875620A (en) 1958-05-19 1959-04-22 Improvements in or relating to sealing packings

Country Status (1)

Country Link
GB (1) GB875620A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9315357U1 (en) * 1993-10-11 1995-02-16 Martin Merkel GmbH & Co KG, 21107 Hamburg Sealing arrangement
EP0877184A3 (en) * 1997-05-10 1999-08-25 IMI Norgren-Herion Fluidtronic GmbH & Co. KG Directional multyway valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9315357U1 (en) * 1993-10-11 1995-02-16 Martin Merkel GmbH & Co KG, 21107 Hamburg Sealing arrangement
EP0877184A3 (en) * 1997-05-10 1999-08-25 IMI Norgren-Herion Fluidtronic GmbH & Co. KG Directional multyway valve

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