Screw and nut arrangement for jack posts

Details Screw and nut arrangement for jack posts Screw and nut arrangement for jack posts

1978-09-05

1981-06-09

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Screw

411427, B66F 308

Patent

active

042720583

ABSTRACT:
A screw for use in jack posts has a minor unthreaded portion and a major threaded portion, a spigot extends from the end of the threaded portion with flats on the spigot to permit application of a wrench for turning the screw and, a nut whose bottom surface is formed to engage on a jack post.

REFERENCES:
patent: 2233224 (1941-02-01), Quarnstrom
patent: 2387799 (1945-10-01), Leland
patent: 2422795 (1947-06-01), McKnight
patent: 2504291 (1950-04-01), Alderfer
patent: 2876990 (1959-03-01), Grabowski
patent: 3738613 (1973-06-01), Hollis

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