EP 0363800 B1 19940119 - Hoist apparatus.
Title (en)
Hoist apparatus.
Title (de)
Hebevorrichtung.
Title (fr)
Appareil de levage.
Publication
Application
Priority
US 25733088 A 19881013
Abstract (en)
[origin: EP0363800A1] An improved cable hoist apparatus (10) has a sheave (22) movably connected relative to a frame (50) to bias the cable (12) in a circumferential groove (58) in the sheave (22). A biasing means on the frame compresses the cable (12) in the sheave groove (58) with the amount of force depending upon the tension in the cable (12). In this regard, the sheave (22) is positioned relative to the frame (50) as a function of the cable tension such that the greater the cable tension, the greater the biasing force on the cable. However, the biasing means can include a plurality of rollers (62, 94) to regulate the biasing force. A reeving spring (142) can be used in conjunction with the biasing means to allow reeving of the hoist (10) when the cable is unloaded. The hoist apparatus optimally incorporates certain advantageous safety features (124, 162....). These include a cable brake activated and released depending upon the position of the sheave and a motor shutoff as a function of overload and/or underload.
IPC 1-7
IPC 8 full level
B66D 3/20 (2006.01); B66D 1/74 (2006.01); B66D 3/04 (2006.01)
CPC (source: EP)
B66D 1/7415 (2013.01)
Designated contracting state (EPC)
BE DE ES FR GB LU NL
DOCDB simple family (publication)
EP 0363800 A1 19900418; EP 0363800 B1 19940119; DE 68912495 D1 19940303; DE 68912495 T2 19940511; ES 2047640 T3 19940301; JP 2657551 B2 19970924; JP H02138099 A 19900528
DOCDB simple family (application)
EP 89118393 A 19891004; DE 68912495 T 19891004; ES 89118393 T 19891004; JP 26796389 A 19891012