US3358660A - Pull-out retainer for hydraulic lash adjuster - Google Patents

Pull-out retainer for hydraulic lash adjuster Download PDF

Info

Publication number
US3358660A
US3358660A US634324A US63432467A US3358660A US 3358660 A US3358660 A US 3358660A US 634324 A US634324 A US 634324A US 63432467 A US63432467 A US 63432467A US 3358660 A US3358660 A US 3358660A
Authority
US
United States
Prior art keywords
retainer
plunger
groove
pillar
unit
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 - Lifetime
Application number
US634324A
Inventor
Richard D Cornell
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
Priority to US634324A priority Critical patent/US3358660A/en
Application granted granted Critical
Publication of US3358660A publication Critical patent/US3358660A/en
Priority to GB6126/68A priority patent/GB1202162A/en
Priority to FR1558800D priority patent/FR1558800A/fr
Priority to DE19681751143 priority patent/DE1751143A1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/20Adjusting or compensating clearance
    • F01L1/22Adjusting or compensating clearance automatically, e.g. mechanically
    • F01L1/24Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/20Adjusting or compensating clearance
    • F01L1/22Adjusting or compensating clearance automatically, e.g. mechanically
    • F01L1/24Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
    • F01L1/2405Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically by means of a hydraulic adjusting device located between the cylinder head and rocker arm
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/20Adjusting or compensating clearance
    • F01L1/22Adjusting or compensating clearance automatically, e.g. mechanically
    • F01L1/24Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
    • F01L1/245Hydraulic tappets
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00Machine element or mechanism
    • Y10T74/21Elements
    • Y10T74/2101Cams
    • Y10T74/2107Follower

Definitions

  • ABSTRACT OF THE DISCLOSURE An hydraulic lash adjustor having a plunger-pillar unit that is releasable from the receiving body by axial pulling force on the pillar, causing diametral collapse of a retainer loop in a plane normal to the pulling force.
  • This invention relates to components of internal combustion engines, and more particularly to hydraulic lash adjustors.
  • rocker arms used with tappets pivot on an axis intermediate their ends
  • the rocker arms used with lash adjustors have one end engaging and pivoting on an extended pillar or post which protrudes from the lash adjustor from the internal plunger.
  • the cam engages the rocker arm intermediate the arm ends, and the other end of the arm engages the valve.
  • the lash adjustor pillar is an extension of the plunger, with the plunger being inside the hollow lash adjustor body, and the pillar extending axially from the open end of the body.
  • the plunger is normally held in the lash adjustor body in the same way it is held in a tappet body, i.e. by a retainer snapped into a groove inside the body adjacent the open end.
  • the retainer in a tappet is exposed and can be diametrally collapsed out of the tappet quite readily with a screw driver.
  • the protruding pillar of the lash adjustor prevents ready access to the retainer, so that its removal can be very troublesome.
  • the diametral retainer loop collapse is achieved with the axial pulling force because of the interfit and configuration of the retainer loop, retainer-receiving groove in one member preferably in the body, and a peripheral shoulder on the other member, preferably on the plungerpillar unit.
  • FIG. 1 is a side elevational, partially cutaway view of one form of the novel lash adjustor assembly, shown completely assembled;
  • FIG. 2 is a plan view of the structure in FIG. 1, i.e. taken on plane 11-11 of FIG. 1;
  • FIG. 3 is a fragmentary elevational partially cutaway view of the assembly in FIGS. 1 and 2, showing the structure being disassembled;
  • FIG. 4 is a plan view of the structure in FIG. 3, i.e. taken on plane IVIV of FIG. 3;
  • FIG. 5 is a fragmentary, elevational, cutaway view of a second form of releasable retainer assembly
  • FIG. 6 is a fragmentary, elevational, cutaway view of a third form
  • FIG. 7 is a fragmentary, elevational, cutaway view of a fourth form.
  • FIG. 8 is a fragmentary, elevational, cutaway view of a fifth form of releasable retainer assembly.
  • the first embodiment of the invention illustrated in FIGS. 1 through 4 includes an hydraulic lash adjustor assembly 10 having a body 12, a plunger-pillar unit 14 received in said body, and with body 12, unit 14, and retainer loop 16 forming a novel releasable retainer assembly.
  • Body 12 has an elongated, generally cylindrical configuration, having an outer peripheral annular recess 20 for oil flow passage therearound when fitted within its receiving cylindrical cavity in an internal combustion engine (not shown), and having an oil flow passageway through the body shell between recess 20 and the interior of the lash adjust-or.
  • the combination plunger-pillar unit 14 Fitted within the hollow body, having been inserted through the one open axial end 24 of body 12, is the combination plunger-pillar unit 14. It includes a plunger portion 30 received within the hollow body, and c0- operative with the body and suitable check valving means (not shown) of conventional type in the lower closed end of the body, to form the known cushioning, self-adjusting action. Since this check valve and cushion chamber assembly within the lash adjustor are conventional and widely known, they are not shown in detail. The significant factor regarding plunger portion 30 is its juncture with pillar portion 32 that projects from the plunger portion out the open axial end of body 12, to protrude axially therefrom to form a mount for the rocker arm (not shown), to be used therewith.
  • Retainer loop 16 maintains plunger 30 in the body, .and maintains integrally attached pillar 32 in a controlled relationship with respect to the body.
  • Retainer loop 16 basically has a generally U-shaped configuration (FIG. 2) with slightly radially inwardly deformed ends, and is formed of spring steel or the like having an inherent bias radially or diametrally outwardly to cause its end portions to snap into the annular receiving groove 38 machined into the inner peripheral wall of body 12 adjacent open end 24.
  • the resilient inherently outwardly biased retainer loop 16 can be diametrally collapsed deformed temporarily as illustrated in FIG. 4, to release it from groove 38.
  • the purpose of this invention is to cause retainer 16 to be diametrally collapsed in its plane transverse to the axis of the lash adjustor assembly, by the application of a pulling force axially of the plunger-pillar unit (see arrow in FIG. 3), as by gripping protruding plunger 32 with a pair of conventional pliers and pulling axially .away from body 12.
  • This is accomplished by having a particular interfit and configuration of the retainer loop 16, body groove 38, and an annular shoulder 40 formed on the outer periphery of the plunger-pillar unit, basically at the junction of the plunger portion and pillar portion of this unit, and facing open end 24.
  • This annular, axially oriented shoulder 40 engages opposite portions of U-shaped retainer loop 16 while ad- 0 bled to body 12.
  • Diametral collapse of retainer 16 is accomplished by providing groove 38, and specifically the face or edge 38' closest open body end 24 with a slope or taper from the deepest portion of groove 38 to the edge juncture with the peripheral wall portion 12a of body 12 that is between the groove and the open end of the body.
  • plunger-pillar unit 14 may be employed with slightly differently configurated grooves and/or retainer loops as illustrated in the second, third, fourth and fifth embodiments illustrated in FIGS. 5, 6, 7, and 8 respectively.
  • the second form of the assembly, 10a, illustrated in FIGv includes pillar-plunger unit 14 interfitting with body 12a having a groove 38a that has its edge portion closest opening 24a of very shallow depth but not necessarily tapered as in the most preferred form of the invention.
  • retainer 16a has an outer axial face that is tapered or sloped so that the tapered face of loop 16a cooperates with the recessed edge of groove 38a to diametrally collapse under the radially inwardly directed force when axial pulling force is applied to unit 14.
  • the assembly b includes unit 14 fitted within body 12, but with the section of retainer 16b being square rather than round, as in FIGS. 1 through 4.
  • the outer peripheral portion of loop 15b cooperates with the tapered surface of groove 38 to provide the removal action.
  • body 12 receives unit 14 but the snap-in retainer loop 160 has a cross section of a tilted rectangle, diametrally collapsible with radial stress applied by the slope base of groove 38 with the application of axial pulling force on the pillar portion of unit 14.
  • FIG. 8 The form of the structure in FIG. 8 is similar to that in FIG. 5, in that body 12d has a groove with its outermost edge portion of shallow depth.
  • the body receiving unit 14 is the same, and retainer 16 has a circular section.
  • the projecting outer edge 38" protrudes radially in overlapping relation to the outer peripheral portion of retainer 16, but does not protrude beyond the center of the cross sectional circle of retainer 16, i.e., the edge engages the outer arcuately sloping surface of retainer 16 so that axial force applied to unit 14, and hence applied to retainer 16 by shoulder 40, will cause radially inwardly applied force by shoulder 38" to the curved surface of retainer 16 to diametrally collapse it sufi'lciently for removal.
  • the radius of the cross sectional circle of retainer 16 is greater than the off-set of groove edge 38".
  • the shoulder may project radially inwardly on the body inner periphery, and the groove may be in unit 14. However, this would leave the retainer in the body and would be less desirable.
  • the invention is intended to be limited only by the scope of the appended claims and the reasonably equivalent structures to those defined therein.
  • a releasable retainer assembly in an hydraulic lash adjustor having a hollow body with an inner periphery and an open end, a plunger-pillar unit including plunger portion in said body and a support pillar portion projecting from said plunger portion out said open body end; said releasable retainer assembly having a retainer receiving groove in said body inner periphery and a radially collapsible retainer having an inherent radially outward bias normally holding it in said groove; the improvement comprising: said plungenpillar unit having a peripheral shoulder adjacent to and axially engageable with said retainer whereby said plunger portion of said unit is normally retained in said body by said retainer; and said shoulder, retainer, and groove being interfit and con-figurated in a manner that axial pulling force on said pillar portion, outwardly of said body, causes diametral collapse of said retainer by said shoulder and groove to release said plunger-pillar unit for removal from said body.
  • a releasable retainer assembly in an hydraulic lash adjustor having a hollow body element with an inner periphery and an open end, a plunger-pillar element including plunger portion in said body element and a support pillar portion projecting from said plunger portion out said open body element end; said releasable retainer assembly having a retainer receiving groove in one of said elements, and a radially collapsible retainer having an inherent radial bias normally holding it in said groove; the other of said elements having a peripheral shoulder adjacent to and axially engageable with said retainer whereby said plunger portion is normally retained in said body by said retainer; and said shoulder, retainer, and groove being interfit and configurated in a manner that axial pulling force on said pillar portion, outwardly of said body element causes temporary diametral deformation of said retainer, against its inherent bias, by said shoulder and groove, to release said plunger-pillar element for axial removal from said body element.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)

Description

1967 I R; D. CORNELL 3,358,660
PULL-OUT RETAINER FOR HYDRAULIC LASH ADJUSTER Filed April 27, 1967 INVENTOR. 5/67/ 480 0. Gael/ELL AQQ WM arr/57 United States Patent 3,358,660 PULL-OUT RETAINER FOR HYDRAULIC LASH ADTUSTER Richard D. Cornell, Muskegon, Mich., assignor to Johnson Products, Inc, Muskegon, Mich., a corporation of Michigan Filed Apr. 27, 1967, Ser. No. 634,324 6 Claims. (Cl. 12390) ABSTRACT OF THE DISCLOSURE An hydraulic lash adjustor having a plunger-pillar unit that is releasable from the receiving body by axial pulling force on the pillar, causing diametral collapse of a retainer loop in a plane normal to the pulling force.
Background This invention relates to components of internal combustion engines, and more particularly to hydraulic lash adjustors.
Modern engines with overhead camshafts frequently employ hydraulic lash adjustors instead of hydraulic tappets. As is known, while the rocker arms used with tappets pivot on an axis intermediate their ends, the rocker arms used with lash adjustors have one end engaging and pivoting on an extended pillar or post which protrudes from the lash adjustor from the internal plunger. The cam engages the rocker arm intermediate the arm ends, and the other end of the arm engages the valve.
The lash adjustor pillar is an extension of the plunger, with the plunger being inside the hollow lash adjustor body, and the pillar extending axially from the open end of the body. The plunger is normally held in the lash adjustor body in the same way it is held in a tappet body, i.e. by a retainer snapped into a groove inside the body adjacent the open end. Of course, the retainer in a tappet is exposed and can be diametrally collapsed out of the tappet quite readily with a screw driver. However, the protruding pillar of the lash adjustor prevents ready access to the retainer, so that its removal can be very troublesome.
Summary of the invention It is an object of this invention to provide an hydraulic lash adjustor with a retainer assembly that is releasable by a simple axial pulling force on the protruding pillar portion, such causing diametral collapse of the retainer loop. Release of the retainer and removal of the plungerpillar unit from the body is simple and quick with the use of a pair of conventional pliers or the like.
The diametral retainer loop collapse is achieved with the axial pulling force because of the interfit and configuration of the retainer loop, retainer-receiving groove in one member preferably in the body, and a peripheral shoulder on the other member, preferably on the plungerpillar unit.
Other objects of this invention will become apparent from a study of the drawings and detailed description to follow.
Figure description- FIG. 1 is a side elevational, partially cutaway view of one form of the novel lash adjustor assembly, shown completely assembled;
FIG. 2 is a plan view of the structure in FIG. 1, i.e. taken on plane 11-11 of FIG. 1;
FIG. 3 is a fragmentary elevational partially cutaway view of the assembly in FIGS. 1 and 2, showing the structure being disassembled;
FIG. 4 is a plan view of the structure in FIG. 3, i.e. taken on plane IVIV of FIG. 3;
ice
FIG. 5 is a fragmentary, elevational, cutaway view of a second form of releasable retainer assembly;
FIG. 6 is a fragmentary, elevational, cutaway view of a third form;
FIG. 7 is a fragmentary, elevational, cutaway view of a fourth form; and
FIG. 8 is a fragmentary, elevational, cutaway view of a fifth form of releasable retainer assembly.
Description of the preferred embodiments The first embodiment of the invention illustrated in FIGS. 1 through 4 includes an hydraulic lash adjustor assembly 10 having a body 12, a plunger-pillar unit 14 received in said body, and with body 12, unit 14, and retainer loop 16 forming a novel releasable retainer assembly.
Body 12 has an elongated, generally cylindrical configuration, having an outer peripheral annular recess 20 for oil flow passage therearound when fitted within its receiving cylindrical cavity in an internal combustion engine (not shown), and having an oil flow passageway through the body shell between recess 20 and the interior of the lash adjust-or.
Fitted within the hollow body, having been inserted through the one open axial end 24 of body 12, is the combination plunger-pillar unit 14. It includes a plunger portion 30 received within the hollow body, and c0- operative with the body and suitable check valving means (not shown) of conventional type in the lower closed end of the body, to form the known cushioning, self-adjusting action. Since this check valve and cushion chamber assembly within the lash adjustor are conventional and widely known, they are not shown in detail. The significant factor regarding plunger portion 30 is its juncture with pillar portion 32 that projects from the plunger portion out the open axial end of body 12, to protrude axially therefrom to form a mount for the rocker arm (not shown), to be used therewith.
Retainer loop 16 maintains plunger 30 in the body, .and maintains integrally attached pillar 32 in a controlled relationship with respect to the body. Retainer loop 16 basically has a generally U-shaped configuration (FIG. 2) with slightly radially inwardly deformed ends, and is formed of spring steel or the like having an inherent bias radially or diametrally outwardly to cause its end portions to snap into the annular receiving groove 38 machined into the inner peripheral wall of body 12 adjacent open end 24. The resilient inherently outwardly biased retainer loop 16 can be diametrally collapsed deformed temporarily as illustrated in FIG. 4, to release it from groove 38.
The purpose of this invention is to cause retainer 16 to be diametrally collapsed in its plane transverse to the axis of the lash adjustor assembly, by the application of a pulling force axially of the plunger-pillar unit (see arrow in FIG. 3), as by gripping protruding plunger 32 with a pair of conventional pliers and pulling axially .away from body 12. This is accomplished by having a particular interfit and configuration of the retainer loop 16, body groove 38, and an annular shoulder 40 formed on the outer periphery of the plunger-pillar unit, basically at the junction of the plunger portion and pillar portion of this unit, and facing open end 24.
This annular, axially oriented shoulder 40 engages opposite portions of U-shaped retainer loop 16 while ad- 0 bled to body 12. Diametral collapse of retainer 16, is accomplished by providing groove 38, and specifically the face or edge 38' closest open body end 24 with a slope or taper from the deepest portion of groove 38 to the edge juncture with the peripheral wall portion 12a of body 12 that is between the groove and the open end of the body.
Hence, when axial pulling force is applied to pillar portion 32, axially facing annular shoulder 40 applies an axial force to retainer loop 16 toward open end 24. The interengagement of the smooth outer curved surface of loop 16 with sloped face 38' of groove 38 converts the axial thrust to a radially inwardly directed force on loop 16 to collapse it, i.e. radially retract it, against its inherent bias, to the contracted condition illustrated in FIG. 4 where it Withdraws from groove 38. Once removed from groove 38, retainer 16 allows the entire plunger-pillar unit to be axially withdrawn for disassembly of the structure. Insertion of the plunger-pillar assembly is achieved merely by positioning retainer 16 within the inner periphery of the structure after pressing the parts together in conventional fashion. With this structure therefore, removal of the retainer, and disassembly of the lash adj-ustor is very simple and quick, presenting no difiiculties as previously was encountered.
Once this basic interfitting and configuration characteristic described is understood, it will be realized that the configuration of the interfitting components may be modified somewhat without departing from the broad concept presented. Thus, plunger-pillar unit 14 may be employed with slightly differently configurated grooves and/or retainer loops as illustrated in the second, third, fourth and fifth embodiments illustrated in FIGS. 5, 6, 7, and 8 respectively.
Specifically, the second form of the assembly, 10a, illustrated in FIGv includes pillar-plunger unit 14 interfitting with body 12a having a groove 38a that has its edge portion closest opening 24a of very shallow depth but not necessarily tapered as in the most preferred form of the invention. Instead, retainer 16a has an outer axial face that is tapered or sloped so that the tapered face of loop 16a cooperates with the recessed edge of groove 38a to diametrally collapse under the radially inwardly directed force when axial pulling force is applied to unit 14.
In the third form of the structure illustrated in FIG. 6, the assembly b includes unit 14 fitted within body 12, but with the section of retainer 16b being square rather than round, as in FIGS. 1 through 4. The outer peripheral portion of loop 15b cooperates with the tapered surface of groove 38 to provide the removal action.
In the fourth form illustrated in FIG. 7, body 12 receives unit 14 but the snap-in retainer loop 160 has a cross section of a tilted rectangle, diametrally collapsible with radial stress applied by the slope base of groove 38 with the application of axial pulling force on the pillar portion of unit 14.
The form of the structure in FIG. 8 is similar to that in FIG. 5, in that body 12d has a groove with its outermost edge portion of shallow depth. The body receiving unit 14 is the same, and retainer 16 has a circular section. It will be noted that the projecting outer edge 38" protrudes radially in overlapping relation to the outer peripheral portion of retainer 16, but does not protrude beyond the center of the cross sectional circle of retainer 16, i.e., the edge engages the outer arcuately sloping surface of retainer 16 so that axial force applied to unit 14, and hence applied to retainer 16 by shoulder 40, will cause radially inwardly applied force by shoulder 38" to the curved surface of retainer 16 to diametrally collapse it sufi'lciently for removal. In other Words, the radius of the cross sectional circle of retainer 16 is greater than the off-set of groove edge 38".
It is conceivable that certain other structural variations may be made within the broadest aspects of the concept presented. For example, the shoulder may project radially inwardly on the body inner periphery, and the groove may be in unit 14. However, this would leave the retainer in the body and would be less desirable. The invention is intended to be limited only by the scope of the appended claims and the reasonably equivalent structures to those defined therein.
I claim:
1. A releasable retainer assembly in an hydraulic lash adjustor having a hollow body with an inner periphery and an open end, a plunger-pillar unit including plunger portion in said body and a support pillar portion projecting from said plunger portion out said open body end; said releasable retainer assembly having a retainer receiving groove in said body inner periphery and a radially collapsible retainer having an inherent radially outward bias normally holding it in said groove; the improvement comprising: said plungenpillar unit having a peripheral shoulder adjacent to and axially engageable with said retainer whereby said plunger portion of said unit is normally retained in said body by said retainer; and said shoulder, retainer, and groove being interfit and con-figurated in a manner that axial pulling force on said pillar portion, outwardly of said body, causes diametral collapse of said retainer by said shoulder and groove to release said plunger-pillar unit for removal from said body.
2. The releasable retainer assembly in claim 1 wherein said groove is tapered radially inwardly toward said open body end to cause diametral collapse of the retainer.
3. The releasable retainer assembly in claim 1 wherein said groove has a retainer collapsing edge axially toward said open body end.
4. The releasable retainer assembly in claim 1 wherein said retainer has a tapered surface toward said open body end.
5. The releasable retainer assembly in claim 1 wherein said retainer has an arcuate outer peripheral surface, and said groove has an edge axially toward said open body end that engages and slightly radially overlaps said arcuate outer peripheral surface.
6. A releasable retainer assembly in an hydraulic lash adjustor having a hollow body element with an inner periphery and an open end, a plunger-pillar element including plunger portion in said body element and a support pillar portion projecting from said plunger portion out said open body element end; said releasable retainer assembly having a retainer receiving groove in one of said elements, and a radially collapsible retainer having an inherent radial bias normally holding it in said groove; the other of said elements having a peripheral shoulder adjacent to and axially engageable with said retainer whereby said plunger portion is normally retained in said body by said retainer; and said shoulder, retainer, and groove being interfit and configurated in a manner that axial pulling force on said pillar portion, outwardly of said body element causes temporary diametral deformation of said retainer, against its inherent bias, by said shoulder and groove, to release said plunger-pillar element for axial removal from said body element.
References Cited UNITED STATES PATENTS 2,309,740 2/1943 Voorhies 12390 2,432,762 12/1947 Hoern 123-90 2,858,817 11/1958 Line 12390 3,151,603 10/1964 Schurnm 12390 AL LAWRENCE SMITH, Primary Examiner.

Claims (1)

1. A RELEASABLE RETAINER ASSEMBLY IN A HYDRAULIC LASH ADJUSTOR HAVING A HOLLOW BODY WITH AN INNER PERIPHERY AND AN OPEN END, A PLUNGER-PILLAR UNIT INCLUDING PLUNGER PORTION IN SAID BODY AND A SUPPORT PILLAR PORTION PROJECTING FROM SAID PLUNGER PORTION OUT SAID OPEN BODY END; SAID RELEASABLE RETAINER ASSEMBLY HAVING A RETAINER RECEIVING GROOVE IN SAID BODY INNER PERIPHERY AND A RADIALLY COLLAPSIBLE RETAINER HAVING AN INHERENT RADIALLY OUTWARD BIAS NORMALLY HOLDING IT IN SAID GROOVE; THE IMPROVEMENT COMPRISING: SAID PLUNGER-PILLAR UNIT HAVING A PERIPHERAL SHOULDER ADJACENT TO AND AXIALLY ENGAGEABLE WITH SAID RETAINER WHEREBY SAID PLUNGER PORTION OF SAID UNIT IS NORMALLY RETAINED IN SAID BODY BY SAID RETAINER; AND SAID SHOULDER, RETAINER, AND GROOVE BEING INTERFIT AND CONFIGURATED IN A MANNER THAT AXIAL PULLING FORCE ON SAID PILLAR PORTION, OUTWARDLY OF SAID BODY, CAUSES DIAMETRAL COLLAPSE OF SAID RETAINER BY SAID SHOULDER AND GROOVE TO RELEASE SAID PLUNGER-PILLAR UNIT FOR REMOVAL FROM SAID BODY.
US634324A 1967-04-27 1967-04-27 Pull-out retainer for hydraulic lash adjuster Expired - Lifetime US3358660A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US634324A US3358660A (en) 1967-04-27 1967-04-27 Pull-out retainer for hydraulic lash adjuster
GB6126/68A GB1202162A (en) 1967-04-27 1968-02-07 Improvements in hydraulic back-lash adjustors
FR1558800D FR1558800A (en) 1967-04-27 1968-03-26
DE19681751143 DE1751143A1 (en) 1967-04-27 1968-04-10 Detachable snap ring holder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US634324A US3358660A (en) 1967-04-27 1967-04-27 Pull-out retainer for hydraulic lash adjuster

Publications (1)

Publication Number Publication Date
US3358660A true US3358660A (en) 1967-12-19

Family

ID=24543324

Family Applications (1)

Application Number Title Priority Date Filing Date
US634324A Expired - Lifetime US3358660A (en) 1967-04-27 1967-04-27 Pull-out retainer for hydraulic lash adjuster

Country Status (4)

Country Link
US (1) US3358660A (en)
DE (1) DE1751143A1 (en)
FR (1) FR1558800A (en)
GB (1) GB1202162A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4355546A (en) * 1979-08-09 1982-10-26 Lucas Industries Limited Reciprocable plunger fuel injection pump
US4502428A (en) * 1984-02-22 1985-03-05 General Motors Corporation Lash adjuster with follower body retainer
US4596213A (en) * 1985-06-20 1986-06-24 Eaton Corporation Cap retainer for hydraulic lash adjuster assembly
US4716866A (en) * 1986-02-28 1988-01-05 Motomak Motorenbau Maschinen- Und Werkzeugfabrik, Konstruktionen Gmbh Inner element for a hydraulic valve compensation element
US4716867A (en) * 1986-02-28 1988-01-05 Motomak Motorenbau, Maschinen- Und Werkzeugfabrik, Konstruktionen Gmbh Inner element for a hydraulic value compensation element
US4716865A (en) * 1986-02-21 1988-01-05 Motomak Motorenbau, Maschinen- Und Werkzeugfabrik, Konstruktionen Gmbh Inner element for a hydraulic compensation element
DE4427943A1 (en) * 1994-08-06 1996-02-08 Schaeffler Waelzlager Kg Hydraulic lash adjuster for valve control of internal combustion engines
US6209499B1 (en) * 1999-09-20 2001-04-03 Delphi Technologies, Inc. Retainer groove and variable resistance assembly

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0100241B1 (en) * 1982-07-30 1987-05-06 Honda Giken Kogyo Kabushiki Kaisha Hydraulic lash adjustor in a valve operating mechanism
DE4340035B4 (en) * 1992-12-10 2006-02-23 Ina-Schaeffler Kg Mechanical bucket tappet

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2309740A (en) * 1941-07-24 1943-02-02 Eaton Mfg Co Internal combustion engine
US2432762A (en) * 1945-01-27 1947-12-16 Eaton Mfg Co Hydraulic tappet
US2858817A (en) * 1957-02-04 1958-11-04 Eaton Mfg Co Tappet mechanism
US3151603A (en) * 1963-03-20 1964-10-06 Gen Motors Corp Snap ring retainer means

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2309740A (en) * 1941-07-24 1943-02-02 Eaton Mfg Co Internal combustion engine
US2432762A (en) * 1945-01-27 1947-12-16 Eaton Mfg Co Hydraulic tappet
US2858817A (en) * 1957-02-04 1958-11-04 Eaton Mfg Co Tappet mechanism
US3151603A (en) * 1963-03-20 1964-10-06 Gen Motors Corp Snap ring retainer means

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4355546A (en) * 1979-08-09 1982-10-26 Lucas Industries Limited Reciprocable plunger fuel injection pump
US4502428A (en) * 1984-02-22 1985-03-05 General Motors Corporation Lash adjuster with follower body retainer
DE3503312A1 (en) * 1984-02-22 1985-08-29 General Motors Corp., Detroit, Mich. HYDRAULIC GAME REALIZATION
US4596213A (en) * 1985-06-20 1986-06-24 Eaton Corporation Cap retainer for hydraulic lash adjuster assembly
US4716865A (en) * 1986-02-21 1988-01-05 Motomak Motorenbau, Maschinen- Und Werkzeugfabrik, Konstruktionen Gmbh Inner element for a hydraulic compensation element
US4716866A (en) * 1986-02-28 1988-01-05 Motomak Motorenbau Maschinen- Und Werkzeugfabrik, Konstruktionen Gmbh Inner element for a hydraulic valve compensation element
US4716867A (en) * 1986-02-28 1988-01-05 Motomak Motorenbau, Maschinen- Und Werkzeugfabrik, Konstruktionen Gmbh Inner element for a hydraulic value compensation element
DE4427943A1 (en) * 1994-08-06 1996-02-08 Schaeffler Waelzlager Kg Hydraulic lash adjuster for valve control of internal combustion engines
WO1996005413A1 (en) * 1994-08-06 1996-02-22 Ina Wälzlager Schaeffler Kg Hydraulic play-compensation element for valve-control units in internal-combustion engines
US5704319A (en) * 1994-08-06 1998-01-06 Ina Walzlager Schaeffler Kg Hydraulic clearance compensation element for valve control units of internal-combustion engines
DE19580861B4 (en) * 1994-08-06 2005-12-01 Ina-Schaeffler Kg Hydraulic clearance compensation element for the valve control of internal combustion engines
US6209499B1 (en) * 1999-09-20 2001-04-03 Delphi Technologies, Inc. Retainer groove and variable resistance assembly

Also Published As

Publication number Publication date
GB1202162A (en) 1970-08-12
FR1558800A (en) 1969-02-28
DE1751143A1 (en) 1971-03-04

Similar Documents

Publication Publication Date Title
US3358660A (en) Pull-out retainer for hydraulic lash adjuster
US4696266A (en) Decompression apparatus for engines
US4373477A (en) Lash adjuster with plunger retainer
US4004558A (en) Hydraulic lash adjuster oil metering valve
US3153404A (en) Hydraulic lash adjuster
JP3712412B2 (en) Hydraulic play compensation element for valve control of internal combustion engines
US3466073A (en) Locked assembly
US4709668A (en) Self-adjusting hydraulic valve tappet
US4570582A (en) Inner element for a hydraulic valve play compensating element
US4502428A (en) Lash adjuster with follower body retainer
US4807575A (en) Hydraulic lash adjuster with multi-directional check valve
US5379730A (en) Cup-shaped valve tappet
US3587539A (en) Hydraulic lash adjuster
US2797673A (en) Valve lifter
US2882886A (en) Hollow stem poppet valve
US6021751A (en) Hydraulic valve lifter with lash
US5979385A (en) Valve tappet actuated by the cam of an internal combustion engine
US2171668A (en) Valve spring retainer
US5890463A (en) Tappet with a hydraulic valve clearance compensation element
US4180030A (en) Valve lock assembly
US2908262A (en) Valve gear
US3008687A (en) Valve spring retainer and lock
US3059627A (en) Tappet with pressed fit push rod seat
US4716867A (en) Inner element for a hydraulic value compensation element
US4716865A (en) Inner element for a hydraulic compensation element