GB1275531A - Hydraulic tappet - Google Patents

Hydraulic tappet

Info

Publication number
GB1275531A
GB1275531A GB875/71A GB87571A GB1275531A GB 1275531 A GB1275531 A GB 1275531A GB 875/71 A GB875/71 A GB 875/71A GB 87571 A GB87571 A GB 87571A GB 1275531 A GB1275531 A GB 1275531A
Authority
GB
United Kingdom
Prior art keywords
tappet
plunger
rocker arm
push rod
spherical
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
GB875/71A
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.)
Johnson Products Inc
Original Assignee
Johnson Products Inc
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 Johnson Products Inc filed Critical Johnson Products Inc
Publication of GB1275531A publication Critical patent/GB1275531A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F01L1/255—Hydraulic tappets between cam and rocker arm

Landscapes

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

Abstract

1275531 Hydraulic tappet JOHNSON PRODUCTS Inc 7 Jan 1971 [7 May 1970] 875/71 Heading F2K [Also in Division F1] An hydraulic tappet for an overhead camshaft I.C. engine has a push rod shorter than the body of the tappet with part-spherical ends to allow relative swivelling between the rod and the tappet plunger and the rocker arm respectively. An open ended tappet body 32 has a plunger 38 having seat 62 for a part-spherical end of a push rod 82 having its other end 84, of smaller diameter, fitting in a socket 86 of a rocker arm 12. The spherical engagement ends of the push rod allows swivelling to compensate for the arcuate path taken by the end of the rocker arm. Lubrication is effected through passageways 18, 36, 40 into the reservoir 46 of the plunger 38, which is closed by a check valve of a plate 52 and spring 50, and thence through metering means 60 comprising ridges 66, 70 and a metering disc 72 with apertures 74 to an opening 64 and thence to a passageway 89. The oil in the reservoir 46 holds the push rod 82 in constant contact with the rocker arm while sufficient pressure retracts the plunger 38 by oil passing the check valve 50, 52.
GB875/71A 1970-05-07 1971-01-07 Hydraulic tappet Expired GB1275531A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US3552770A 1970-05-07 1970-05-07

Publications (1)

Publication Number Publication Date
GB1275531A true GB1275531A (en) 1972-05-24

Family

ID=21883258

Family Applications (1)

Application Number Title Priority Date Filing Date
GB875/71A Expired GB1275531A (en) 1970-05-07 1971-01-07 Hydraulic tappet

Country Status (5)

Country Link
US (1) US3661127A (en)
CA (1) CA924981A (en)
DE (1) DE2100671A1 (en)
FR (1) FR2091318A5 (en)
GB (1) GB1275531A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3880127A (en) * 1972-12-07 1975-04-29 Eaton Corp Hydraulic valve gear
FR2578907B1 (en) * 1985-03-13 1989-06-16 Peugeot DEVICE FOR ACTUATING VALVES IN AN INTERNAL COMBUSTION ENGINE COMPRISING FOUR VALVES INCLINED IN V AND A CENTRAL SPARK PLUG BY CYLINDER
US5445118A (en) * 1994-04-22 1995-08-29 Brunswick Corporation Valve train assembly for internal combustion engine
US5720246A (en) * 1996-07-23 1998-02-24 Minnesota Mining And Manufacturing Continuous fiber reinforced aluminum matrix composite pushrod
US6786186B2 (en) * 1998-09-09 2004-09-07 International Engine Intellectual Property Company, Llc Unit trigger actuator
US7347172B2 (en) * 2005-05-10 2008-03-25 International Engine Intellectual Property Company, Llc Hydraulic valve actuation system with valve lash adjustment

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1335515A (en) * 1920-03-30 Internal-combustion engine
US1521623A (en) * 1920-02-09 1925-01-06 J I Case Plow Works Company Valve mechanism
US1798938A (en) * 1927-04-25 1931-03-31 Gen Motors Res Corp Hydraulic slack adjuster
US2665669A (en) * 1948-06-11 1954-01-12 Gen Motors Corp Hydraulic lash adjuster
US2858817A (en) * 1957-02-04 1958-11-04 Eaton Mfg Co Tappet mechanism
US2944536A (en) * 1958-05-30 1960-07-12 Austin Motor Co Ltd Overhead valve internal combustion engines
DE1284235B (en) * 1965-01-20 1969-02-20 Opel Adam Ag Valve control for internal combustion engines
US3272190A (en) * 1965-07-21 1966-09-13 Jr Vincent J Di Matteo Tapered push rod
FR94585E (en) * 1967-07-19 1969-09-12 Andre Citroen Camshaft distribution for engine cylinder head.

Also Published As

Publication number Publication date
CA924981A (en) 1973-04-24
DE2100671A1 (en) 1971-11-25
US3661127A (en) 1972-05-09
FR2091318A5 (en) 1972-01-14

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee