A - Human Necessities – 47 – C
Patent
A - Human Necessities
47
C
A47C 3/30 (2006.01)
Patent
CA 2067920
Plastic Standpipe Support for Load-Bearing Adjustustable-Length Column Abstract A plastic standpipe for an adjustable-height support column for a chair or the like to replace the conventional metal standpipe which supports the height- adjustable device, e.g., a pressurized fluid spring. The novel standpipe is a unitary, molded generally tubular member formed of high strength, and preferably low-friction, plastic material. A plurality of circumferentially-spaced, radially-extending support ribs, with flexible arc-like members at their inner ends, are formed on the inner wall of the tubular member, such that the arc-like members contact the spring cylinder and form a floating circumferential support ring which allows for some lateral freedom of movement of the upper end of the spring cylinder. The interior ribs perform the dual functions of guiding axial movement of the spring cylinder with flexibility during height adjustment and providing sufficient rigidity to the column to support the loads placed on it. A representative composition of the plastic material is fiberglass-reinforced nylon and an impact modifier, such as a ter polymer, comprising ethylene, acrylic acid and maleic anhydride, or a rubber-like polymer.
Cohen Yoav
Fichtel & Sachs Industries Inc. ¢concurring!
Gowling Lafleur Henderson Llp
LandOfFree
Plastic standpipe support for a load-bearing adjustable column does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Plastic standpipe support for a load-bearing adjustable column, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Plastic standpipe support for a load-bearing adjustable column will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1568656