Title:
【発明の名称】安全装置
Document Type and Number:
Japanese Patent JP2925640
Kind Code:
B2
Abstract:
A chain hoist for supporting and selectively raising and lowering a load includes a powered gearwheel that is connected through a frictional lock with one or more friction disks fixed for rotation with the hoist drive shaft so as to provide a slip clutch arrangement. The hoist additionally includes, between one of the friction disks and a pressure spring, a safety brake disk for rapidly halting movement of the load in the event that the rotation of the brake disk attains or exceeds a predetermined speed or rate deemed to be excessive. For this purpose, the brake disk carries a detent pawl that is pivotally displaced by centrifugal force and into engagement with a detent nose or projection defined on the hoist housing when the brake disk rotation exceeds the predetermined speed.
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Inventors:
HAINTSU FURAIKU
Application Number:
JP7856190A
Publication Date:
July 28, 1999
Filing Date:
March 27, 1990
Export Citation:
Assignee:
MANNESUMAN AG
International Classes:
B66D1/54; B66D1/58; B66D5/04; B66D5/14; B66D5/18; F16D59/00; F16D67/02; (IPC1-7): F16D59/00; B66D5/18
Domestic Patent References:
| JP4932337A | ||||
| JP6237634U | ||||
| JP6297859U |
Attorney, Agent or Firm:
Okuyama Nao