Pantograph jack

Details Pantograph jack Pantograph jack

1988-03-18

1989-06-06

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Single throw lever

Mechanically actuated

B66F 322

Patent

active

048365025

ABSTRACT:
A pantograph jack for lifting and lowering a vehicle chassis or the like includes a pair of upper arms and a pair of lower arms pivotally connected to each other by a metal member and a nut member, and a manually operated rod member having a joint portion for supporting the metal member via a bearing member. The rod member is rotatably fitted in the metal member and threadably fitted in the nut member. A flat contact surface is formed on the metal member and is in contact with the bearing member.

REFERENCES:
patent: 1536877 (1925-05-01), Burniston
patent: 1714464 (1929-05-01), Merriman
patent: 3679176 (1972-07-01), Campbell
patent: 4025054 (1977-05-01), Yamazaki
patent: 4695036 (1987-09-01), Yukimoto et al.

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