Dual automobile jack for consumer use

Details Dual automobile jack for consumer use Dual automobile jack for consumer use

1986-04-03

1987-02-10

Schmidt, Frederick R.

Implements or apparatus for applying pushing or pulling force

Hoisting truck

Single throw lever

254 89R, B66F 504

Patent

active

046418130

ABSTRACT:
A system of jacking apparatus includes an extendible jack stand with a ratchet for latching it in an extended position, and a power unit which can be selectively engaged with or disengaged from the jack stand. The power unit includes a screw-driven scissors which is interposed between upper and lower plates of the jack stand for raising the jack stand.
The jack stand has a ratchet plate whose lower end protrudes in an exposed location where it can be engaged by a ratchet release member in the power unit.
The power unit is also independently usable as a jack, having a pivotally supported flip-top cover which can be placed over the top of the scissors for engaging and supporting a load.

REFERENCES:
patent: 1505443 (1924-08-01), Stone
patent: 1750663 (1930-03-01), Dart
patent: 3834669 (1974-09-01), Reid
patent: 3850419 (1974-11-01), Craig
patent: 4066243 (1978-01-01), Johnson
patent: 4123038 (1978-10-01), Meyers
patent: 4177978 (1979-12-01), Warsaw
patent: 4289298 (1981-09-01), Kameda
patent: 4462569 (1984-07-01), Arzouman

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