Pantagraph-type jack, and process for producing the same

Details Pantagraph-type jack, and process for producing the same Pantagraph-type jack, and process for producing the same

1999-12-30

2000-12-19

Banks, Derris H.

Implements or apparatus for applying pushing or pulling force

Single throw lever

Mechanically actuated

254122, B66F 308

Patent

active

061618160

ABSTRACT:
A pantagraph-type jack includes a pair of lower arms and a pair of upper arms. Upper ends of the lower arms and lower ends of the upper arms are connected to each other through first and second connecting shafts. An externally threaded rod is rotatably but axially non-movably supported on the first connecting shaft and threadedly engaged with a threaded bore provided in the second connecting shaft. In the pantagraph-type jack, the externally threaded rod is formed into a hollow shape, and external threads of the externally threaded rod are provided with a tapered portion formed in a convergent shape over a given light-loaded area from a tip end on the side of the second connecting shaft. Thus, a reduction in weight of the externally threaded rod can be provided, and the threaded engagement of the externally threaded rod with the threaded bore in the second connecting shaft can be conducted easily, which contributes to a reduction in weight and an enhancement in assemblability.

REFERENCES:
patent: 535314 (1895-03-01), Barlett et al.
patent: 2783809 (1957-03-01), Haines
patent: 4732366 (1988-03-01), Suga
patent: 5176362 (1993-01-01), Seksaria et al.
patent: 5303898 (1994-04-01), Engel et al.
patent: 5435522 (1995-07-01), Brosius
patent: 5529286 (1996-06-01), Kikuchi
patent: 5950990 (1999-09-01), Castillo
patent: 5975497 (1999-11-01), Few et al.

Affiliated with

Also associated with

Rating

Pantagraph-type jack, and process for producing the same does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-265156