Power jack and method

Details Power jack and method Power jack and method

1987-04-24

1990-07-24

Hartman, Judy

Implements or apparatus for applying pushing or pulling force

Single throw lever

Lazy tongs

254126, 254DIG2, B66F 322

Patent

active

049430343

ABSTRACT:
An adaptor for a jack having a threadable jack shaft and a support platform that rises or lowers when the threadable jack shaft turns.
The adaptor has a housing containing a drive motor that is coupled to a drive shaft. The adaptor has an engagement bracket for engaging releasably the adaptor to the jack. Spring loaded bolts bias the engagement bracket against the face of the housing. A jack and adaptor in combination and a method for operating a jack having support aligning bars wherethrough a threadable jack shaft rotatably passes to raise or lower a support platform of the jack upon rotation.

REFERENCES:
patent: 2508934 (1950-05-01), Berg
patent: 3451655 (1969-06-01), Scott
patent: 3606252 (1971-09-01), Dorough, Jr.
patent: 4084830 (1978-04-01), Daniel, Jr. et al.
patent: 4653727 (1987-03-01), Chang et al.
patent: 4749169 (1988-06-01), Pickles

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