GB2229790A - A seal - Google Patents

A seal

Info

Publication number
GB2229790A
GB2229790A GB9003287A GB9003287A GB2229790A GB 2229790 A GB2229790 A GB 2229790A GB 9003287 A GB9003287 A GB 9003287A GB 9003287 A GB9003287 A GB 9003287A GB 2229790 A GB2229790 A GB 2229790A
Authority
GB
United Kingdom
Prior art keywords
seals
seal
sealing
piston
arcuate heel
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.)
Granted
Application number
GB9003287A
Other versions
GB9003287D0 (en
GB2229790B (en
Inventor
Keith Vernon Leigh-Monstevens
Leslie Paul Branum
David Lee Wrobleski
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.)
Automotive Products PLC
Original Assignee
Automotive Products PLC
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 Automotive Products PLC filed Critical Automotive Products PLC
Publication of GB9003287D0 publication Critical patent/GB9003287D0/en
Publication of GB2229790A publication Critical patent/GB2229790A/en
Application granted granted Critical
Publication of GB2229790B publication Critical patent/GB2229790B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/16—Master control, e.g. master cylinders
    • B60T11/236—Piston sealing arrangements
    • 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
    • F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
    • F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
    • F16J15/3236—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips with at least one lip for each surface, e.g. U-cup packings

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
  • Sealing With Elastic Sealing Lips (AREA)
  • Actuator (AREA)
  • Transmission Of Braking Force In Braking Systems (AREA)
  • Sealing Devices (AREA)

Abstract

The seal (50) includes an axially forward portion (50a) defining radially inner and radially outer deflectable lip seals (50c, 50d) and an axially rearward portion (50b) defining radially outer and inner arcuate heel seals (50e, 50f). When positioned in an annular groove (43) in a piston (30) and with the piston slidably received in the bore (27) of a cylinder (28), the annular seal (50) provides fluid pressure sealing at the deflectable lip seals, provides secondary fluid pressure sealing at the arcuate heel seals, provides air sealing at the arcuate heel seals, and functions at the arcuate heel seals to preclude the entry of contaminants into the sealing interfaces. The seal is especially effective when employed in a hydraulic pressure cylinder of the centre feed type since it allows the usage of a single annular seal positioned in a singular annular groove in the piston.
GB9003287A 1987-10-29 1990-02-14 A seal Expired - Lifetime GB2229790B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11402987A 1987-10-29 1987-10-29
PCT/GB1988/000926 WO1989003954A2 (en) 1987-10-29 1988-10-21 A seal

Publications (3)

Publication Number Publication Date
GB9003287D0 GB9003287D0 (en) 1990-06-20
GB2229790A true GB2229790A (en) 1990-10-03
GB2229790B GB2229790B (en) 1991-03-13

Family

ID=22352971

Family Applications (2)

Application Number Title Priority Date Filing Date
GB888813677A Pending GB8813677D0 (en) 1987-10-29 1988-06-09 Seal
GB9003287A Expired - Lifetime GB2229790B (en) 1987-10-29 1990-02-14 A seal

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB888813677A Pending GB8813677D0 (en) 1987-10-29 1988-06-09 Seal

Country Status (2)

Country Link
GB (2) GB8813677D0 (en)
WO (1) WO1989003954A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004065827A1 (en) * 2003-01-23 2004-08-05 Automotive Products France S.A. Seals

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2745617B1 (en) * 1996-02-29 1999-01-08 Valeo ADVANCED HYDRAULIC CONTROLLED CLUTCH DEVICE ESPECIALLY FOR MOTOR VEHICLES
DE19714844A1 (en) 1997-04-10 1998-10-15 Mannesmann Sachs Ag Groove ring for sealing cylinder surfaces

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2700561A (en) * 1949-01-07 1955-01-25 Ernest J Svenson Sealing means
GB810625A (en) * 1955-10-04 1959-03-18 Parker Hannifin Corp Sealing or packing ring and joint including such ring
GB860090A (en) * 1956-05-07 1961-02-01 Renault Improvements in and relating to sealing means
GB1142265A (en) * 1967-02-14 1969-02-05 Trist Mouldings & Seals Ltd Improvements relating to sealing rings
GB2012392A (en) * 1978-01-13 1979-07-25 Dba Sa Piston Rings; Lip Type Seals
GB2102898A (en) * 1981-07-29 1983-02-09 Ludowici J C & Son Ltd Lipped seals

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2700561A (en) * 1949-01-07 1955-01-25 Ernest J Svenson Sealing means
GB810625A (en) * 1955-10-04 1959-03-18 Parker Hannifin Corp Sealing or packing ring and joint including such ring
GB860090A (en) * 1956-05-07 1961-02-01 Renault Improvements in and relating to sealing means
GB1142265A (en) * 1967-02-14 1969-02-05 Trist Mouldings & Seals Ltd Improvements relating to sealing rings
GB2012392A (en) * 1978-01-13 1979-07-25 Dba Sa Piston Rings; Lip Type Seals
GB2102898A (en) * 1981-07-29 1983-02-09 Ludowici J C & Son Ltd Lipped seals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004065827A1 (en) * 2003-01-23 2004-08-05 Automotive Products France S.A. Seals

Also Published As

Publication number Publication date
WO1989003954A3 (en) 1989-06-01
WO1989003954A2 (en) 1989-05-05
GB9003287D0 (en) 1990-06-20
GB2229790B (en) 1991-03-13
GB8813677D0 (en) 1988-07-13

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20061021