Beds – Invalid bed or surgical support – With auxiliary means to raise a portion of user above...
Patent
1997-02-06
1999-01-26
Trettel, Michael F.
Beds
Invalid bed or surgical support
With auxiliary means to raise a portion of user above...
5613, 5238, 5241, 5934, A61H 100, A61C 7057
Patent
active
058625500
ABSTRACT:
An apparatus in the form of a bed or chair for providing relaxation therapy and prevention of decubitis sores is distinguished by the use of flexible beams of the nature of leaf springs. Instead of being lifted up and down by rather complex apparatus only a single shaft carrying cams is provided which acts on the leaf spring-like beams to flex them upwardly and/downwardly to provide the required action. Preferred cams provide no lifting action but only intermitted depressing action of these beams which reduces vertigo and nausea effects and can be slid onto a cam shaft in any one of a multiple alternative angular positions. This enables selection of the travelling wave action for relaxation therapy and of the decubitis preventing action.
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patent: 5443439 (1995-08-01), Uhshita
patent: 5626555 (1997-05-01), Di Blasi et al.
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