Screw-type jack

Details Screw-type jack Screw-type jack

1991-05-08

1992-06-23

Hartman, J. J.

Implements or apparatus for applying pushing or pulling force

Screw

Geared

254DIG4, 254133R, 254100, 254102, B66F 318

Patent

active

051236290

ABSTRACT:
A screw-type jack including an auxiliary screw barrel which is engaged with a ram cap at the uppermost stage. With that construction, this screw-type jack also has such function as to overlay an upper portion of a casing by the auxiliary screw barrel when the jack is contracted, in addition to widening the lift of the jack, whereby the case can be free from dirt and protected from damage.

REFERENCES:
patent: 538392 (1895-04-01), Sheridan
patent: 1468034 (1923-09-01), Riker
patent: 1546472 (1925-07-01), Butta
patent: 1659785 (1928-02-01), Rodman et al.
patent: 2600741 (1952-06-01), Drum
patent: 2926888 (1960-03-01), Schultz
patent: 4330104 (1982-05-01), Klok

Affiliated with

Also associated with

Rating

Screw-type jack does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Screw-type jack, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Screw-type jack will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-928192