Elevating and lowering apparatus

Details Elevating and lowering apparatus Elevating and lowering apparatus

A - Human Necessities

62

B

A62B 1/06 (2006.01)

Patent

CA 2053092

The elevating and lowering apparatus comprises a baseplate (1) on which a freely rotatable lowering pulley (2) including a back-run safety is mounted. A toothed crown (7) is mounted on the side of said lowering pulley facing said baseplate, the teeth (7a) of said toothed crown cooperating with a ratchet member (9) in such a manner that in the freewheeling direction, said ratchet member is lifted, and in the reverse direction, said ratchet member blocks said toothed crown, i.e. said lowering pulley. Said ratchet member is accommodated in said baseplate. Such an additional back-run safety results in an increased security, and in some countries, it is mandatory for certain operations involving the appara- tus.

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