GB772764A - Improvements in or relating to an automatic clearance take-up device - Google Patents

Improvements in or relating to an automatic clearance take-up device

Info

Publication number
GB772764A
GB772764A GB37566/54A GB3756654A GB772764A GB 772764 A GB772764 A GB 772764A GB 37566/54 A GB37566/54 A GB 37566/54A GB 3756654 A GB3756654 A GB 3756654A GB 772764 A GB772764 A GB 772764A
Authority
GB
United Kingdom
Prior art keywords
piston
space
cylinder
fluid
synthetic resin
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
GB37566/54A
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 GB772764A publication Critical patent/GB772764A/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
    • F16H—GEARING
    • F16H49/00—Other gearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/20—Adjusting or compensating clearance
    • F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
    • F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
    • F01L1/245—Hydraulic tappets
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G2700/00—Control mechanisms or elements therefor applying a mechanical movement
    • G05G2700/02—Means for regulating or adjusting control mechanisms, e.g. devices for automatic adjustment

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Gears, Cams (AREA)

Abstract

772,764. Valve gear. REGIE NATIONALE DES USINES RENAULT. Dec. 29, 1954 [Jan. 14, 1954; June 25, 1954], No. 37566/54. Class 7 (6). In an hydraulic tappet having a compression space 3 between a cylinder 1 and piston 2 and a compensating space 4, 10, filled with the hydraulic fluid, a member 5 transmitting the movements of the piston 2 to the engine valve gear is resiliently connected in fluid tight manner to the cylinder 1 and a compressible means 12 is provided in the space 10 in the piston 2 to maintain the pressure in the compensating space 10 approximately constant despite variations in the volume thereof during operation. The piston and cylinder are urged apart by a spring 9 and the member 5, which is shaped to receive the end of a valve stem or rocker and has a flange 8 resting on the piston 2, is bonded to a resilient ring 6 of rubber or synthetic resin which is bonded to a plug 7 screwed into the end of the cylinder 1, the ring 6 permitting the member 5 to move with the piston 2 relatively to the cylinder 1. The flow of fluid from the compensating space to the compression space 3 is controlled by a non-return valve 14 held in position by a cage 15 and on each up-stroke of the tappet a small amount of fluid is forced from space 3 past the piston 2 to the annular compensating space 4 which is connected to the space 10 through orifices 11 in the piston 2. The means 12, which expands or contracts according to variations in the volume of fluid in the spaces 4, 10, may consist of a cylindrical bellows containing compressed gas or of a block of sponge rubber or similar synthetic resin material covered with a layer of fluidtight rubber or synthetic resin. In a modification, Fig. 2, the piston and cylinder 1, 2, are urged apart by the resilient member 6, the spring 9 of Fig. 1 being omitted and the member 5 is screwed into the piston 2. Grooves 10<SP>1</SP>, 10<SP>2</SP>, facilitate flow of the liquid from the chamber 4 to the chamber 10.
GB37566/54A 1954-01-14 1954-12-29 Improvements in or relating to an automatic clearance take-up device Expired GB772764A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR772764X 1954-01-14

Publications (1)

Publication Number Publication Date
GB772764A true GB772764A (en) 1957-04-17

Family

ID=9195336

Family Applications (1)

Application Number Title Priority Date Filing Date
GB37566/54A Expired GB772764A (en) 1954-01-14 1954-12-29 Improvements in or relating to an automatic clearance take-up device

Country Status (1)

Country Link
GB (1) GB772764A (en)

Similar Documents

Publication Publication Date Title
ES413325A1 (en) Pressurized shock absorber
US2928507A (en) Friction and fluid shock absorber
GB1280688A (en) Improvements in or relating to shock absorbers
GB758222A (en) Improvements in or relating to suspension devices for vehicles
GB849342A (en) Hydro-pneumatic suspension device
US3161112A (en) Speed compensated variable compression ratio piston and valve
GB1033810A (en) Improvements relating to vibration dampers
GB767977A (en) Shock absorber
GB683198A (en) Shock absorber
GB931287A (en) Improvements in and relating to a suspension system for a vehicle
GB1056266A (en) Improvements in hydro-pneumatic suspension units for vehicles
GB1058795A (en) Hydropneumatic spring suspension element
GB1496546A (en) Fluid damped isolator
US2621924A (en) Hydropneumatic suspension gear
GB772764A (en) Improvements in or relating to an automatic clearance take-up device
GB1046694A (en) Resilient device
GB1306319A (en)
GB1017793A (en) Hydraulic self-regulating valve tappet for piston engines
US3241379A (en) Device of the kind comprising rolling diaphragm seals between two relatively reciprocating coaxial elements
GB1166551A (en) Improvements in Diaphragm Pumps
US2871839A (en) Self-contained hydraulic lash adjuster
GB840019A (en) Improvements relating to hydro-pneumatic shock absorbers
ATE44800T1 (en) INDEPENDENT LASH COMPENSATION ELEMENT WITH DIAPHRAGM SEAL.
GB1441694A (en) Fuel control apparatus
US2949132A (en) Pressure responsive power element