A - Human Necessities – 47 – C
Patent
A - Human Necessities
47
C
5/17
A47C 19/04 (2006.01) A47C 20/04 (2006.01) A61G 7/012 (2006.01) A61G 7/018 (2006.01)
Patent
CA 1151357
ABSTRACT A driving device for lifting and lowering the platform of a bed or any other thing for sleeping or resting on, comprising a support cylinder containing a working rod extensibly, being provided, at one end, with a driving and locking section of said working rod, said working rod, having a driving piece loosely fitted movably, and having first and second locking pieces loosely fitted pivotally rotatably with each one side held, in said driving and locking section, a driving shaft, being provided near to one side of said driving piece, a driving protrusion for pushing said driving piece at said one side against the resilience of a return spring, being formed on said driving shaft, to move said driving piece forward by said driving protrusion and backward by said return spring, and to drive said working rod by the forward move- ment of said driving piece, said first and second locking pieces, being inclined by respectively corresponding locking springs, to prevent the working rod from moving forward and backward respec- tively, and releasing means, being respectively provided, to erect the corresponding inclined locking pieces, releasing the prevented movement of said working rod, is connected with a lifting member for lifting and lowering the platform of bed or any other thing for sleeping or resting on, by converting the displacement applied to the lifting member itself, to make a lifting device of said platform, and said driving shaft is rotated in alternate directions by a lever, to move said working rod in one direction gradually, for raising said platform.
369441
Iizuka Takayuki
Kimura Bed Mfg. Company Limited
Macrae & Co.
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