Counterbalanced arm assembly

Supports – Brackets – Adjustable

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

2482811, 248586, E04G 300

Patent

active

048464341

ABSTRACT:
A spring counterbalanced arm assembly including a base member, a lower arm, an upper arm, a knee bearing member and object supporting means. The lower arm has an elongated, generally tubular member defining an elongated cavity therein. The base end of the tubular member includes means defining a forwardly extending bracket and has pivot means thereon positioned forwardly of an exterior front wall of the tubular member for pivotally connecting the base end bracket of the lower arm to the base member at a first pivot axis of the base member. The knee end of the tubular member includes a forwardly extending bracket having pivot means thereon positioned forwardly of the exterior front wall for pivotally connecting the knee end of the lower arm to a knee end of an upper arm and to the knee bearing member at a first pivot axis of the knee bearing member. The lower arm includes a slider and tension spring enclosed within it to provide counterbalancing force. The lower arm assembly also includes an elongated stay arm substantially completely enclosed within the elongated cavity of the lower arm. The stay arm is pivotally connected to the knee bearing member and to the base member so as to form a parallelogram mechanism. The counterbalanced arm assembly also includes an upper arm assembly having a generally tubular member defining an elongated cavity therein, and an extensible tension spring and slider for providing counterbalancing force by means of linkage means between the knee bearing member and the slider.

REFERENCES:
patent: 2787434 (1957-04-01), Jacobsen
patent: 3041060 (1962-06-01), Jacobsen
patent: 3226073 (1965-12-01), Jacobsen
patent: 3543019 (1970-11-01), Jacobsen
patent: 3774873 (1973-11-01), Krogsrud
patent: 4080530 (1978-03-01), Krogsrud
patent: 4160536 (1979-07-01), Krogsrud
patent: 4447031 (1984-05-01), Souder et al.
patent: 4494177 (1985-01-01), Matthews
patent: 4770384 (1988-09-01), Kuinazima et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Counterbalanced arm assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

     

Profile ID: LFUS-PAI-O-431328

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.