Jacking device

Details Jacking device Jacking device

1979-11-16

1980-12-09

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Multiple lifters

254134, B60S 902

Patent

active

042381134

ABSTRACT:
This disclosure relates to a jacking or lifting device for use with trailers or the like. The jacking device of the present invention is basically a two-piece structure comprised of a rough adjusting column which is spaced apart from and externally secured to the outside cylinder or housing of an otherwise conventional lifting jack. With this new construction, only relatively simple adjustments need to be made on the rough adjusting column, to enable the jacking device of the present invention to cover a wide range of lifting heights with minimum effort.

REFERENCES:
patent: 2549862 (1951-04-01), Thorndike
patent: 2852229 (1958-09-01), Gross
patent: 3595527 (1971-07-01), Douglass
patent: 3851855 (1974-12-01), Douglass
patent: 4068826 (1978-01-01), Scott
patent: 4176824 (1979-12-01), Linton et al.

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