Jack assembly

Details Jack assembly Jack assembly

1999-02-04

2000-02-29

Eley, Timothy V.

Implements or apparatus for applying pushing or pulling force

Single throw lever

Mechanically actuated

254DIG2, 254425, B66F 300

Patent

active

060299509

ABSTRACT:
A jack assembly includes two lower arms each having an upper end portion and a lower end portion pivotally attached to a base, two upper arms each having an upper end portion pivotally mounted to a support bracket and a lower end portion pivotally mounted to the upper end portion of one of the two respective lower arms, a drive shaft having two end portions each rotatably extending through the connection of the lower end portion of one of the two respective upper arms and the upper end portion of one of the two respective lower arms, and an drive device including a drive gear train driven by a motor so as to rotate the drive shaft electrically, and a drive nut driven by a tool such as a socket so as to rotate the drive shaft manually. In such a manner, the jack assembly can be operated manually or electrically.

REFERENCES:
patent: 3451655 (1969-06-01), Scott
patent: 5165660 (1992-11-01), Engel et al.
patent: 5364072 (1994-11-01), Engel
patent: 5613670 (1997-03-01), Ballestrazzi et al.
patent: 5624340 (1997-04-01), Forster

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