US3927864A - Lifting jack - Google Patents

Lifting jack Download PDF

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Publication number
US3927864A
US3927864A US543832*A US54383275A US3927864A US 3927864 A US3927864 A US 3927864A US 54383275 A US54383275 A US 54383275A US 3927864 A US3927864 A US 3927864A
Authority
US
United States
Prior art keywords
guide housing
jack
spur gear
slots
base plate
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
US543832*A
Other languages
English (en)
Inventor
Jurgen Meierkort
Peter Schafer
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.)
TDK Micronas GmbH
ITT Inc
Original Assignee
Deutsche ITT Industries GmbH
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 Deutsche ITT Industries GmbH filed Critical Deutsche ITT Industries GmbH
Application granted granted Critical
Publication of US3927864A publication Critical patent/US3927864A/en
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
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/08—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated
    • B66F3/16—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated actuated through bevel-wheel gearings

Definitions

  • the jack includes a spur gear placed in slots in a guide housing such that the gear extends out of the guide housing through the slots.
  • a pinion gear located outside the housing engages the spur gear and is driven by lever means to turn the spur gear.
  • a lifting spindle is fastened to the spur gear within the housing.
  • This invention relates to a jack with a guide housing having a nut which is secured against twisting and carries a jack arm and is axially movable by means of a lifting spindle arranged in the guide housing, and with a jack gearing including a spur gear, a pinion and crank handle.
  • a common use of the jack will be with motor vehicles.
  • the jack gearing is arranged above the guide housing. In this manner, the jack gearing increases the overall length of the jack. Moreover, practice has shown that the functioning capability of the jack may be adversely affected when the jack is dropped onto the jack arm in the direction of the longitudinal axis of the guide housing.
  • Objects of the present invention therefore include the provision of a jack of the type mentioned at the outset, which is designed as compactly as possible, can be manufactured inexpensively and is insensitive to damage when dropped.
  • the spur gear is disposed inside the guide housing and that in the zone of the spur gear, the guide housing is designed with slots through which the spur gear projects out of the guide housing.
  • the lifting spindle is axially supported, by means of the spur gear via a cage ball-bearing, on a base plate fastened in further slots of the guide housing.
  • Advantages of this invention include the facts that the overall length of the guide housing is not increased by the jack gearing, and that an axial shifting of the spindle and of the spur gear is prevented owing to the arrangement of slots in the guide housing.
  • the assembly of this jack is cheapened owing to the fact that the spur gear, the cage ball-bearing and the base plate can be mounted onto the lifting spindle, and that this arrangement can be inserted as one unit into the slots of the guide housing.
  • another advantage of the inventive jack is that naturally less material expenditure than with comparable jacks is necessary for its manufacture.
  • FIG. 1 is a view of the entire inventive jack
  • FIG. 2 shows a partial section of the upper part of the inventive jack.
  • the jack illustrated in FIGS. 1 and 2 includes a guide housing 1 with a jack foot 2.
  • a lifting spindle 3 by means of which a nut 4 is axially movable.
  • nut 4 in guide housing 1 is secured against twisting.
  • Nut 4 carries a jackarm 5 which when the jack is used is put under the motor vehicle which is to be jacked up. As shown in the drawing, jack arm 5 is swivellingly connected to nut 4 so that arm 5 can be tilted onto the guide housing 1 in order that the jack can be better placed in the motor vehicle.
  • a spur gear 6 is securely connected to the lifting spindle 3. This spur gear 6 rests against a base plate 8 via a cage ball-bearing 7. Base plate 8 is held in slots 9 and 10 of guide housing 1. Keys 11 and 12 or material deformation of base plate 8 serve as fastening.
  • spur gear 6 As the diameter of spur gear 6 is larger than an external width dimension of guide housing 1, further slots 13 and 14 have to be provided in guide housing 1. In this method, spur gear 6 projects out of slots 13 and 14 and is in engagement with a pinion gear 15 which is arranged at an outside of guide housing 1 and can be rotated by means of a crank handle 16.
  • the top of the guide housing I is covered by a cover 18 which may be fastened in the slots 13, 14 of guide housing 1.
  • the forces acting upon jack arm 5 are supported at guide housing 1 via nut 4, spur gear 6, cage ball-bearing 7 and base plate 8.
  • the guide housing 1 transmits the resultant forces to the jack foot 2. i
  • lifting spindle 3 may be preassembled with base plate 8, cage ball-bearing 7 and spur gear 6. This unit is then inserted into guide housing 1.
  • slots 9 and 10 as well as slots 13 and 14 naturally must be dimensioned adequately. It is a special advantage if the base plate 8 projects with an attachment 17 so far out of slot 9 that the base plate 8 simultaneously serves as a stop for pinion 15.
  • a jack comprising a guide housing, a nut, said guide housing including an inside adapted to secure the nut against twisting, a jack arm pivotally connected to the nut, a lifting spindle arranged in the guide housing in engagement with the nut, the nut including means enabling it to be axially moved in cooperation with the lifting spindle, a spur gear, means inside the guide housing supporting the spur gear, a pinion gear, means connecting the pinion gear to a crank handle, means connecting the spur gear to the lifting spindle inside the guide housing and means including slots in the guide housing through which the spur gear projects out of the guide housing to engage the pinion gear.
  • a jack as claimed in claim I in which the means supporting the spur gear includes a cage ball-bearing, a base plate and additional slots in the guide housing, and in which the spur gear is supported by the cage ballbearing on the base plate, and the base plate is secured in the additional slots in the guide housing.
  • a jack as claimed in claim 2 in which the lifting spindle, the spur gear, the cage ball-bearing and the base plate are formed as a unit and said unit issecured in the additional slots in the guide housing.
  • a jack as claimed in claim 2 in which the base plate includes an attachment. and the attachment projects out of one of the slots in the guide housing, enabling the attachment to serve as a stop for the pinion gear.
  • the plate includes an attachment projecting through one of the slots in the guide housing, and means including keys for fastening the base plate to the guide housing.

Landscapes

  • 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)
  • Forging (AREA)
US543832*A 1974-01-28 1975-01-24 Lifting jack Expired - Lifetime US3927864A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2403853A DE2403853C3 (de) 1974-01-28 1974-01-28 Wagenheber

Publications (1)

Publication Number Publication Date
US3927864A true US3927864A (en) 1975-12-23

Family

ID=5905818

Family Applications (1)

Application Number Title Priority Date Filing Date
US543832*A Expired - Lifetime US3927864A (en) 1974-01-28 1975-01-24 Lifting jack

Country Status (9)

Country Link
US (1) US3927864A (ja)
JP (1) JPS5728680B2 (ja)
BR (1) BR7500537A (ja)
DE (1) DE2403853C3 (ja)
ES (1) ES434197A1 (ja)
FR (1) FR2259046B1 (ja)
GB (1) GB1493055A (ja)
IT (1) IT1031112B (ja)
SE (1) SE383865B (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4129286A (en) * 1976-02-11 1978-12-12 Firma August Bilstein Lifting jack for vehicles
US4786038A (en) * 1987-02-17 1988-11-22 Ammons Frank A Hanger's helper tool

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5255799A (en) * 1975-10-01 1977-05-07 Daido Maruta Finishing Modifying treament of cellulosic fiber containing fiber article
JPS5255798A (en) * 1975-10-01 1977-05-07 Daido Maruta Finishing Treatment of cellulosic fiber containing article
DE2705552C2 (de) * 1977-02-10 1983-09-22 Alfred Teves Gmbh, 6000 Frankfurt Säulenwagenheber

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2565401A (en) * 1945-09-25 1951-08-21 Smith S Jacking Systems Ltd Lifting jack
US2738952A (en) * 1954-02-15 1956-03-20 Vulcan Mfg Co Inc Automobile lifting jack
US2750150A (en) * 1954-01-25 1956-06-12 Auto Specialties Mfg Co Lifting jack

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB828341A (en) * 1957-01-11 1960-02-17 Prima Ind Ltd Improvements relating to screw operated liftig jacks
GB903266A (en) * 1960-02-18 1962-08-15 Carjacks Ltd Improvements in or relating to lifting jacks for motor cars
GB954525A (en) * 1962-04-17 1964-04-08 R T Shelley Ltd Improvements in screw jacks
DE6942933U (de) * 1969-11-04 1970-02-12 Bilstein August Fa Spindel-wagenheber
DE7034884U (de) * 1970-09-19 1971-06-16 Bilstein August Fa Wagenheber.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2565401A (en) * 1945-09-25 1951-08-21 Smith S Jacking Systems Ltd Lifting jack
US2750150A (en) * 1954-01-25 1956-06-12 Auto Specialties Mfg Co Lifting jack
US2738952A (en) * 1954-02-15 1956-03-20 Vulcan Mfg Co Inc Automobile lifting jack

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4129286A (en) * 1976-02-11 1978-12-12 Firma August Bilstein Lifting jack for vehicles
US4786038A (en) * 1987-02-17 1988-11-22 Ammons Frank A Hanger's helper tool

Also Published As

Publication number Publication date
GB1493055A (en) 1977-11-23
DE2403853B2 (de) 1979-08-02
IT1031112B (it) 1979-04-30
FR2259046A1 (ja) 1975-08-22
SE7500814L (ja) 1975-07-29
DE2403853A1 (de) 1975-07-31
FR2259046B1 (ja) 1979-09-28
JPS50117164A (ja) 1975-09-12
JPS5728680B2 (ja) 1982-06-17
SE383865B (sv) 1976-04-05
BR7500537A (pt) 1975-11-11
ES434197A1 (es) 1976-12-16
DE2403853C3 (de) 1984-05-30

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