Lifting jack

Details Lifting jack Lifting jack

1980-06-24

1982-07-20

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Screw

254 7B, 269904, 414 11, E04G 100

Patent

active

043402054

ABSTRACT:
A lifting jack, particularly useful in supporting wall cabinets and the like during installation and attachment to a wall surface, includes an elongated standard, adjustable for major height adjustments, mounted on an adjustable base, and a platform secured to a fine-adjustment mechanism mounted on the upper end of the elongated standard for engaging and supporting the cabinet during installation.

REFERENCES:
patent: Re15609 (1923-05-01), Thomson
patent: 634905 (1899-10-01), McCauley
patent: 1446176 (1923-02-01), Gulledge
patent: 2694946 (1954-11-01), Vandal
patent: 3095173 (1963-06-01), Paruolo
patent: 3100623 (1963-08-01), Pedersen
patent: 3540548 (1970-11-01), Halsey
patent: 3910421 (1975-10-01), Panneton

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