US3807694A - Vehicle service jack - Google Patents

Vehicle service jack Download PDF

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Publication number
US3807694A
US3807694A US00231881A US23188172A US3807694A US 3807694 A US3807694 A US 3807694A US 00231881 A US00231881 A US 00231881A US 23188172 A US23188172 A US 23188172A US 3807694 A US3807694 A US 3807694A
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US
United States
Prior art keywords
lift
hydraulic pump
side plates
lift mechanism
hydraulic
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
US00231881A
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English (en)
Inventor
J Butorac
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.)
Hein Werner Corp
Original Assignee
Applied Power Industries 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 Applied Power Industries Inc filed Critical Applied Power Industries Inc
Priority to US00231881A priority Critical patent/US3807694A/en
Priority to GB1037273A priority patent/GB1373073A/en
Priority to IT48605/73A priority patent/IT979720B/it
Priority to ZA731530A priority patent/ZA731530B/xx
Priority to CA166,358A priority patent/CA983007A/en
Priority to SE7303091A priority patent/SE375085B/xx
Priority to JP48025749A priority patent/JPS48104250A/ja
Application granted granted Critical
Publication of US3807694A publication Critical patent/US3807694A/en
Assigned to HEIN-WERNER CORPORATION, A CORP OF WI reassignment HEIN-WERNER CORPORATION, A CORP OF WI ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: APPLIED POWER INC., A WI CORP
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F5/00—Mobile jacks of the garage type mounted on wheels or rollers
    • B66F5/04—Mobile jacks of the garage type mounted on wheels or rollers with fluid-pressure-operated lifting gear

Definitions

  • the lift or jack includes a wheeled frame supporting a fluid powered actuator or motor adapted to actuate a hydraulic cylinder power unit to raise the load at a substantially constant rate.
  • Mechanical linkage is provided to manually actuate the hydraulic cylinder to lift the load where a pressurized air supply is unavailable.
  • a mechanical linkage including a pivotal lifting arm is operatively' connected to the fluid powered hydraulic cylinder unit to lift a vehicle upon the preselected operational mode of said unit.
  • the lifting jack which is operable by means of a source of pressurized air is much more convenient for a mechanic in that it permits him to elevate the vehicle with a minimum of manual labor; it is more time saving and provides a rapid lifting of the vehicle.
  • the lifting jack which is operable by means of a pressurized air supply can be actuated from a remote location such that the mechanic can more closely inspect the car during the lifting process.
  • the source of pressurized air is not always conveniently available in av repair garage and obviously is unavailable when servicing a vehicle on a roadway. Therefore, the lifting jack must be capable of elevating the vehicle through manual operation of a handle.
  • both modes of operation are combined such that the lifting jack may be operated manually or through a source of pressurized air and therefore the advantages of each system are combined into one device.
  • the lifting jack may be operated through the application of pressurized air during actuation of the handle mechanism. 7
  • Another object of this invention is to selectively actuate the lifting mechanism manually through the use of a hand operated hydraulic pump or by a pressurized air actuated fluid motor.
  • a further object of this invention is to provide an improved lifting mechanism forselective actuation of the lift through the use of a pressurized air fluid motor or manual operation.
  • Still another object of this invention is to actuate the lifting mechanism through the use of a hand operated hydraulic pump and a pressurized air actuated fluid motor simultaneously.
  • a lifting jack with a rigid frame or base having a plurality of rollers attached thereto for permitting the jack to be rolled upon a surface to any desired position beneath the vehicle.
  • a lifting arm is pivotally connected to the frame or base and actuated by means of a hydraulic fluid cylinder selectively operated through the use of a fluid motor driven by a pressurized air supply or manually through operation of a handle mechanism.
  • FIG. 1 is a perspective view of the portable lifting jack
  • FIG. 2 is a side elevation view of the lifting jack with portions removed to better illustrate the internal elements thereof;
  • FIG. 3 is a plan view of the lifting jack with portions broken away to better illustrate the internal structure thereof;
  • FIG. 4 is a detailed sectional view showing the hydraulic cylinder power unit used to raise the lift elements
  • FIG. 5 is a detailed sectional view of the valve arrangement used in conjunctionwith the air motor
  • FIG. 6 is a detailed sectional view of the air motor used to actuate the hydraulic cylinder.
  • FIG. 7 is a sectional view of the hydraulic cylinder power unit of FIG. 4 taken along lines 7-7 and reduced in size.
  • FIGS. 1 and 2 there is shown a portable lifting jack 100 including a lifting mechanism 20,
  • the lifting mechanism 20 is pivotally supported between a pair of chassis side plates 1 and 2 which are preferably made from steel plate of appropriate thickness and held in parallel, spaced relationship with respect to each other by means of a forward spacer 3 and rearward spacer 4 secured -to the side plate by any suitable means.
  • the forward portion of the chassis side plates 1 and 2 rotatably support an axle 6 to which is secured a pair of wheels 7 for moving the portable lift apparatus benea th a portion of a vehicle to be elevated.
  • the wheels 7 are secured to axle 6 by means of retaining rings 8 in the conventional manner.
  • Axle 6 is supported in the side chassis plates by conventional bearings.
  • Brackets 9 are secured to the chassis side plates and each bracket carries a caster assembly 11 appropriately secured thereto to facilitate the positioning of the jack assembly beneath a vehicle.
  • the brackets 9 space the caster assemblies 11 a sufficient distance from the side plates 1 and 2 to permit the caster roller to pivot completely about the connection point.
  • the lift arm assembly 20 comprises a lift plate 21 having depending side portions 22 which extend in parallel, spaced relationship with respect to each other and are supported in the chassis side plate 1 and 2 for pivotal movement such that the depending side portions move in aplane parallel to that of the side plates.
  • the lift arm assembly is supported between the chassis side plates 1 and 2 by means of a tubular lift bearing assembly 23 which is secured between the side plate to permit the pivoting of the lift arm assembly thereabout.
  • a portion of each depending side plate is formed with an aperture which carries the tubular lift bearing assembly 23.
  • the lift mechanism 20 is pivoted with respect to the side plates 1 and 2 to elevate a vehicle upon actuation of the by draulic power unit 30.
  • the depending side plates 22 are formed with apertures which support the bell crank shaft 28.
  • the roll pin 29 mechanically secures a rod 31 of the hydraulic pump unit 30 to the lifting mechanism 20 such that upon extension of the rod 31 from the hydraulic pump unit the lifting mechanism 20, acting as a bell crank, will pivot upward effecting a lifting force.
  • a lift head or saddle 24 is carried by the liftarm assembly 20 and comprises a head platform 25 and a pair of parallel, platform support legs 26 depending therefrom and secured to opposed portions of the sides 22 of the lift arm 21 by a suitable bearing to allow the lift head to pivot relative to the lift arm assembly.
  • the platform support legs 26 have a pair of aligned openings adjacent to their lower extremities to which a pair of head erecting parallel linkbars 27 are pivotally connected.
  • the opposite end of the head erecting bars 27 are each pivotally supported (12) to the chassis side plates 1 and 2 such that the lift head 24 will be continuously held erect throughout all positions of normal operation of the lift arm mechanism thereby maintaining the platform 25 in a continuous horizontal orientation.
  • Tthe movement of the head erecting bars 27 is parallel to the chassis side plates 1 and 2 and the path of the lift arm assembly 20 when actuated by means of the hydraulic power unit 30.
  • a tension spring 13 is secured at one end to a connecting rod 14 (joining the pair of head erecting bars 27) and to the forward spacer rod 3 at its other end to provide a retracting force on the lift arm mechanism 20 to facilitate lowering of the lift mechanism after an elevated vehicle has been lowered to its original position.
  • the hydraulic power unit 30 is pivotally supported between the chassis side plates 1 and 2 by means of suitable bearings or bushings supported through the chassis side plates and engaging a portion of the hydraulic pump unit. Actuation of the hydraulic power unit is effected by means of either an air motor 60 or through a mechanical linkage assembly 40 which act to drive a piston carried within the hydraulic power unit effecting the extension of the connecting rod or plunger 31 whichis coupled to the lift arm assembly 20.
  • the reciprocating, hydraulic power unit is carried between the chassis side plates and operatively connected with the air motor 60 and mechanical linkage system as best shown in FIGS 4, and 6.
  • the hydraulic power unit 30 (shown in sectional detail in FIG. 4) includes a valve housing 110, securedto one end of a hydraulic cylinder 115 the other end of which is closed by atop cap 120 to form a sealed chamber.
  • a hydraulic fluid reservoir 116 is formed between the outer wall of the hydraulic cylinder 1 l5, thetop cap 120 and valve housing 110 by a reservoir plate 117 forming a closed chamber with ports 118 which function in a manner to be hereinafter described.
  • the hy-' draulic fluid reservoir is of a size sufficient to contain a quantity of hydraulic fluid for use in actuating the plunger rod 31 to effect elevation of the lifting mechanism 20.
  • the plunger rod 31 which is secured to the lift arm assembly 20, is formed with a reduced end portion 131 carrying a piston or plunger cup and comprises an extension of the assembly 130.
  • the plunger cup 140 is utilized to effect a hydraulic seal on the plunger 31 and the resultant force is used to elevate the lifting mechanism 20.
  • a support disc 141 is carried on the reduced end portion 131 of the plunger abutting the shoulder formed thereby.
  • the -plunger cup or piston 140 is supported by the disc with a suitable back-up washer 142 and held thereto by means of a nut and washer assembly 144 threaded onto the reduced end portion of the rod 131.
  • the plungerpiston assembly 130 thereby forms a hydraulically sealed piston whose movement is dependent upon the hydraulic pressure forces exerted against the face of the plunger cup 140.
  • a high limit stop mechanism Positioned within the hydraulic chamber is a high limit stop mechanism which functions to prevent the hydraulic plunger-piston assembly 130 from being driven out of the chamber and thereby reduces the structural strength requirement of the top cap 120.
  • the plunger rod 31 is formed with an orifice (176) passing through the reduced end portion (which carries the plunger cup 140) with the orifice forming a connecting fluid conduit from hydraulic chamber portions 150a to 15017 by means of the fluid communication of the chamber 176 with a connecting conduit in which is supported a stop pin 171.
  • the connecting conduit 176 is normally sealed to prevent hydraulic fluid flow therethrough by means of a ball check valve 173 in place by a spring 174 suitably positioned by a hollow retaining ring 175 threaded into the reduced end portion of the plunger 31.
  • the stop rod 171 will engage the inner face 120a of the top cap moving the stop rod slightly to the right in the enlarged opening in which it is carried.
  • This movement of the limit stop rod mechanically unseats the ball check valve 173 from its valve seat by means of the connecting linkage 172.
  • the fluid in the chamber 150a is therefore metered through the conduit 176 at a controlled rate into the portion 15Gb of the hydraulic chamber. This metered.
  • the hydraulic power unit 30 may be actuated by means of an air motor 60 or manually through pivotal movement of the handle 5 which is connected to a mechanical linkage assembly 40 to effect the desired lifting movement of the lift arm mechanism 20.
  • the air motor 60 (shown in sectional detail in FIG. 6 of the drawings) is coupled to the hydraulic power unit 30 in a manner shown in FIG. ,5.
  • the air motor 60 is actuated to elevate the lifting mechanism by means of a pressurized air source supplied through conduit (shown in FIG. 2 with the air line 61 and control valve 59 rotated 90 to better illustrate these elements).
  • the air motor 60 comprises a valve housing 62 with a cylindrical displacement chamber 64 extending from one end thereof.
  • the chamber is formed by a cylindrical wall 66.
  • Reciprocally received in this displacement chamber 64 is a piston 68.
  • Piston 68 is provided with a suitable sealing ring or packing 69 to form a fluidtight seal.
  • the sealing means is accomplished by a sealing ring confined in an annular groove and slidably coacts with the inner surface of wall 66.
  • the piston 68 is biased toward the valve housing 62 by a compression spring 63 which is seated between the reverse face of the piston 68 and an end plate 81 secured to the cylinder wall 66.
  • a hydraulic pump assembly 85 is secured to the end plate 81 in fluid communication with the displacement chamber 64.
  • a piston rod 84 carried at one end by the piston 68 is axially aligned with an internal chamber or bore formed in the plunger body 86 and appropriately sealed by an O ring to form a hydraulic or fluid-tight seal thereabout.
  • the end of the plunger body 86 remote from the piston 84 is formed'to threadingly engage a manifold 96 which is coupled to a suitable passage or port of the hydraulic power unit 30 such that actuation of the air motor 60 will result in the displacement of the plunger-piston assembly 130 of the hydraulic power unit as will be hereinafter described in detail.
  • the valve housing 62 of the air motor 60 is formed with a cylindrical chamber 70.
  • Chamber 70 is enlarged at surface 71.
  • poppet member 72 having a valve 74 at one end thereof and a piston portion 76 at the other end.
  • the piston 76 has a first periphery 77 closely received by the inner surface of the chamber 70 and a second periphery 79 closely received by the surface 71.
  • a differential pressure chamber 80 is thus formed between the walls of the chamber and the exterior walls of the piston.
  • the stem portion of the poppet 72 reciprocally movable within these chambers is formed to receivea spring biased (75) rod 78 which acts to control the actuation of a ball check valve 92.
  • the end 60a of the valve housing removed from the cylinder 66 is formed with an air inlet 90 which is reduced at 92 to form a valve seat for a spring biased (93) ball check valve 94.
  • the poppet 72 carries an elastomeric grommet 73 which closes an opening67 when the poppet 72 is moved to the right and opens the opening as the poppet moves to the left.
  • Te grommet is elastomeric so as to reduce chattering and to absorb the shock of the piston operating in its cycle.
  • a source of pressurized air is supplied to the inlet 90 with the ball valve initially unseated.
  • the air bypasses check ball 94, it simultaneously enters passageways (not shown) which communicate with the differential pressure area 80 creating a resultant net force to the right (FIG. 6).
  • the effect of this force is to move poppet 72 and the rod 78 to the right to thereby maintain the check ball 94 away from its valve seat 92.
  • air is delivered to the expansion chamber 64 which moves the piston 68 to the left.
  • the cyclic operation-of the air motor reciprocates piston 68 back and forth'in the displacement chamber 64 thereby reciprocating the piston 84 of the hydraulic plunger assembly and creating a force on the plunger-piston assembly of the hydraulic power unit 30 extending the plunger 31 affecting a lifting movement of the lift arm mechanism 20.
  • the air motor 60 is actuated through a source of pressurized air 61 controlled by a valve 59 secured to the handle 5.
  • a source of air pressure (not shown) is coupled to the valve 59 and upon actuation of the lever 58 the pressurized air flows through the supply line 61 into the fluid motor to effect reciprocation of the piston 68 and, thereby, the plunger 84 actuating the hydraulic power unit 30 elevating the lift mechanism 20.
  • the hydraulic power unit 30 may be actuated by manual manipulation of a pivotal lever or handle 5.
  • a pump cylinder is secured into the valve housing 110.
  • the pump cylinder includes a speed pump plunger 162 slidably carried within the pump cylinder and mechanically coupled to the linkage mechanism 40.
  • the speed pump plunger 162 is concentrically positioned about a power pump plunger 164 secured into the valve housing 110 and having a passageway defined therethrough in fluid communication with the passageways 113 and 213 (FIGsS. 4 and 7) at a point between the ball check valves 122-124 and 222 224.
  • Suitable seals and packings such as O-rings provide a fluid-tight seal between the plunger 162 and the power pump plunger 164. Due to the positioning of the valves in the housing 110, valves and ports 122, 124 and 113 are shown in FIG. 4 only and valves and ports 222, 224 and 213 are shown in FIG. 7 only.
  • the plunger 162 As the plunger 162 is moved outwardly (referring to FIG. 4) by means of the mechanical linkage system, the plunger withdraws liquid from the hydraulic reservoir 116 and the area of the hydraulic chamber through the intake tube 1 1 1, passageways 113 and 213, unseating the ball check valves 122 and 222, and withdrawing the hydraulic fluid into the passageway 163 and the internal bore portion of the plunger. At this time, ball check valves 124 and 224 are drawn downward against their respective valve seats. Upon the plunger 162 being operated in the reverse direction (to the left as shown in FIG.
  • the hydraulic fluid continues to be passed through this dual conduit (123,256) system into the chamber 150a until the pressure reaches approximately 200 psi.
  • This dual conduit flow raises the lifting elements very quickly until the load or. vehicle is engaged creating the pressure rise.
  • pressure relief valve 180 Upon the pressure increasing, pressure relief valve 180 is actuated, dumping the fluid heretofore passing through ball check valve 224 and conduit 256, through conduits 182 and 183 back into the reservoir 116 thereby decreasing the force required to operate the plunger 162.
  • the plunger 162 is connected to the mechanical linkage system 40 for effecting reciprocation thereof.
  • a handle 5 extends from a yoke 41 which is pivotally secured between frame plates 1 and 2 by any suitable means-such as shaft 42.
  • the yoke 41 is linked to and coacts with segment 44 mounted on shaft 42 between the outer ends of the yoke 41.
  • the pivotal lever arm or segment 44 is formed with a bifurcated portion such that each portion of the bifurcated segment is appropriately connected to a power link bar 45 extending from each of the bifurcated segments and pinned at the opposite end to the end of the plunger 162. Movement of the handle 5 causes the yoke 41 to move the power link 45 to reciprocate the plunger 162 of the pump cylinder 160 thereby effecting lifting of the lift mechanism 20.
  • a suitable stop 43 is provided to limit the travel are of the handle.
  • the release assembly'50 is actuated by rotating knob 51 positioned at the top of the handle 5. Rotation of knob 51 rotates a rod 52 passing through the center of the handle 5 and 6 connected to a pivot or universal assembly 53 to effect rotational movement of release valve link 54 coupled to the release valve plunger 55. Movement of the release valve plunger 55 outward (as seen in FIG.
  • a vehicle service jack comprising a frame having spaced side plates carrying a pair of.
  • bracket means secured to said side plates such that said caster rollers are freely pivotal about said bracket means
  • hydraulic pump means coupledto said lift mechanism for effecting -a pivotal lifting movement thereof upon the actuation of said pump means
  • an air motor carried between said side plates and adapted to be connected to a source of pressurized said air motor being operatively connected to said I hydraulic pump means for actuating said pump means upon introduction of pressurized air to said motor, and
  • linkage means carried between said side plates and connecting said handle assembly and said hydraulic pump means such that movement of said handle assembly actuates said pump means to effect pivotal lifting of said lift mechanism.
  • valve means selectively operable to actuate said hydraulic pump means upon acutation of said air motor and said likage means separately or simultaneously.
  • the apparatus of claim 1 further including release means carried by said hydraulic pump means for pivotally retracting said lift mechanism.
  • said lift mechanism comprises a lift plate having depending side poreffect a retracting force on said lift mechanism in a direction opposite to the pivotal lifting mechanism thereof.
  • said hydraulic I pump unit includes a pump cylinder assembly actuable solely by said linkage means to effect pivoted lifting of said lift mechanism.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
US00231881A 1972-03-06 1972-03-06 Vehicle service jack Expired - Lifetime US3807694A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US00231881A US3807694A (en) 1972-03-06 1972-03-06 Vehicle service jack
GB1037273A GB1373073A (en) 1972-03-06 1973-03-02 Vehicle service jack
ZA731530A ZA731530B (en) 1972-03-06 1973-03-05 Vehicle service jack
IT48605/73A IT979720B (it) 1972-03-06 1973-03-05 Perfezionamento nei martinetti adatti in particolare per il sol levamento di autoveicoli
CA166,358A CA983007A (en) 1972-03-06 1973-03-06 Vehicle service jack
SE7303091A SE375085B (ja) 1972-03-06 1973-03-06
JP48025749A JPS48104250A (ja) 1972-03-06 1973-03-06

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00231881A US3807694A (en) 1972-03-06 1972-03-06 Vehicle service jack

Publications (1)

Publication Number Publication Date
US3807694A true US3807694A (en) 1974-04-30

Family

ID=22870988

Family Applications (1)

Application Number Title Priority Date Filing Date
US00231881A Expired - Lifetime US3807694A (en) 1972-03-06 1972-03-06 Vehicle service jack

Country Status (7)

Country Link
US (1) US3807694A (ja)
JP (1) JPS48104250A (ja)
CA (1) CA983007A (ja)
GB (1) GB1373073A (ja)
IT (1) IT979720B (ja)
SE (1) SE375085B (ja)
ZA (1) ZA731530B (ja)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3967814A (en) * 1975-04-30 1976-07-06 Hein-Werner Corporation High capacity hand portable jack
US4742991A (en) * 1986-07-23 1988-05-10 Michael Hung Lying type of jack structure
US4886243A (en) * 1988-10-26 1989-12-12 Trumbull Christopher J Hydraulic jack ramp
US5269501A (en) * 1992-12-03 1993-12-14 Hein-Werner Corporation Vehicle and vehicle parts transportation system
USD433207S (en) * 1999-11-01 2000-10-31 Larin Corporation Floor jack
US20050218384A1 (en) * 2004-03-31 2005-10-06 Hernandez Hector R Jr Incorporation by reference
CN104973532A (zh) * 2015-07-13 2015-10-14 常熟通润汽车修理设备有限公司 手柄杆具有自动回位功能的卧式液压千斤顶的操作装置
ITUB20154817A1 (it) * 2015-10-19 2017-04-19 Cattini Oleopneumatica S R L Sollevatore a carrello
USD823569S1 (en) 2017-05-23 2018-07-17 Vis, Llc Service jack
USD855922S1 (en) 2017-05-31 2019-08-06 Vis, Llc Service jack

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2161137B (en) * 1984-07-02 1989-04-19 Yann Tay Enterprises Co Ltd A pump lever for a jack
GB2481803A (en) * 2010-07-05 2012-01-11 Axeum Ltd Combined air compressor and hose reel for driving a pneumatic jack having a pivotable load engaging attachment device used for leveling a caravan

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2156543A (en) * 1936-01-18 1939-05-02 Blackhawk Mfg Co Hydraulic jack
US2620198A (en) * 1948-01-31 1952-12-02 Gen Fluid Machinery Company Tractor jack

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2156543A (en) * 1936-01-18 1939-05-02 Blackhawk Mfg Co Hydraulic jack
US2620198A (en) * 1948-01-31 1952-12-02 Gen Fluid Machinery Company Tractor jack

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3967814A (en) * 1975-04-30 1976-07-06 Hein-Werner Corporation High capacity hand portable jack
US4742991A (en) * 1986-07-23 1988-05-10 Michael Hung Lying type of jack structure
US4886243A (en) * 1988-10-26 1989-12-12 Trumbull Christopher J Hydraulic jack ramp
US5269501A (en) * 1992-12-03 1993-12-14 Hein-Werner Corporation Vehicle and vehicle parts transportation system
USD433207S (en) * 1999-11-01 2000-10-31 Larin Corporation Floor jack
US20050218384A1 (en) * 2004-03-31 2005-10-06 Hernandez Hector R Jr Incorporation by reference
US7137615B2 (en) 2004-03-31 2006-11-21 All Trade Tools Llc Jack
CN104973532A (zh) * 2015-07-13 2015-10-14 常熟通润汽车修理设备有限公司 手柄杆具有自动回位功能的卧式液压千斤顶的操作装置
ITUB20154817A1 (it) * 2015-10-19 2017-04-19 Cattini Oleopneumatica S R L Sollevatore a carrello
USD823569S1 (en) 2017-05-23 2018-07-17 Vis, Llc Service jack
USD855922S1 (en) 2017-05-31 2019-08-06 Vis, Llc Service jack

Also Published As

Publication number Publication date
GB1373073A (en) 1974-11-06
SE375085B (ja) 1975-04-07
CA983007A (en) 1976-02-03
ZA731530B (en) 1973-11-28
IT979720B (it) 1974-09-30
JPS48104250A (ja) 1973-12-27

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Legal Events

Date Code Title Description
AS Assignment

Owner name: HEIN-WERNER CORPORATION, 1005 PERKINS AVENUE, WAUK

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:APPLIED POWER INC., A WI CORP;REEL/FRAME:004725/0472

Effective date: 19870331