Constant force generator mechanism and adjustable seat construct

Details Constant force generator mechanism and adjustable seat construct Constant force generator mechanism and adjustable seat construct

1981-07-01

1983-06-14

McCall, James T.

Supports

Resilient support

Constant thrust

2482801, 2482811, 248421, 297345, F16M 1300

Patent

active

043878768

ABSTRACT:
A constant force generator mechanism is described, comprising a rigid first link adapted to be fixed to a support, a rigid second link mounted for pivotable movement to the first link by a first hinge joint, and a spring link hingedly mounted to the first link by a second hinge joint and hingedly mounted to the second link by a third hinge joint. The spring link is one having a linear spring rate and a zero free length whereby, upon pivotting the second link with respect to the first link, the spring link generates a force whose component parallel to the first link at any given point on the second link is constant through the entire range of pivotable movement of the second link.
Also described is a chair having a seat continuously adjustable by the above constant force generator mechanism.

REFERENCES:
patent: 2535305 (1950-12-01), Loepsinger
patent: 2906524 (1959-09-01), Oakes et al.
patent: 2969972 (1961-01-01), Kolmen
patent: 2989276 (1961-06-01), Debbage
patent: 3179364 (1965-04-01), Jackson et al.
patent: 3534934 (1970-10-01), McCabe
patent: 3890907 (1975-06-01), Peterson
patent: 3897036 (1975-07-01), Nystrom
patent: 4206898 (1980-06-01), Salter
Product Engineering; vol. 32, No. 3; pp. 46 & 47; Jan. 16, 1961.
Static Mass Balancing with a Torsion Spring and Fourbar Linkage; A.S.M.E. Publication, by W. Harming; 6/1964.
Spring Mechanisms; by K. Hain; Spring Design and Application; 1961; pp. 268-275.

Affiliated with

Also associated with

Rating

Constant force generator mechanism and adjustable seat construct does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Constant force generator mechanism and adjustable seat construct, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Constant force generator mechanism and adjustable seat construct will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-160166