Supports – Armrest or headrest – Armrest for writer
Patent
1997-08-12
1999-03-23
Berger, Derek J.
Supports
Armrest or headrest
Armrest for writer
248918, B68G 500
Patent
active
058848797
ABSTRACT:
An ergonomic support pad for supporting the forearm and wrist of a person operating a computer's in-out device may comprise bottom, middle, and top layers of open celled polyurethane foam material of substantially uniform thickness, preferably of the type which softens on contact with a warm surface thereby providing uniform pressure distribution and firm, yet fluid, support. The bottom layer has a bottom surface for resting on a supporting surface and the top layer has a top surface for engageably receiving the forearm and wrist of the person. Each layer exhibits different indentation force deflections, the bottom layer being firmest and the top layer being most supple. The support pad is approximately one to two inches thick, preferably four sided, and may be round or oval or of other shapes as viewed in plan. When multi-sided, it may have biased corner surfaces joining adjoining pairs of longitudinal and lateral edge surfaces. Longitudinal and lateral edge surfaces of the top layer are substantially perpendicular to the top surface and longitudinal and lateral edge surfaces of the middle and bottom layers are respectively uniformly angularly disposed with respect to the bottom surface, the bottom surface area being smaller than the top surface area. The support pad may have only two layers or more than three layers and may also be of one or more layers with each layer exhibiting a continuous gradient of values of indentation force deflections.
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Materials Summary Sheet, CONFOR Foams, E-A-R Specialty Composites Div., Cabot Safety Corporation, one sheet (both sides), printed Feb. 1996.
Technical Data Sheet TDS-13, CONFOR Ergonomic Urethane Foams, E.cndot.A.cndot.R Specialty Composites Div., Cabot Safety Corp., faxed Jul. 18, 1996, 5 sheets.
Baxter Gwendolyn
Berger Derek J.
Hilburger Albert W.
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