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公开(公告)号：US4846313A
公开(公告)日：1989-07-11
申请号：US55067
申请日：1987-05-28
申请人： George P. Sharp
发明人： George P. Sharp
IPC分类号： A62B35/04
CPC分类号： A62B35/0093
摘要： A fall-arrest apparatus comprises a cable drum (2) and a friction brake including a rotatable brake disc (14) which is pressed against a stationary brake ring (15). In the event that the drum accelerates in the unwinding direction to a certain speed, pawls (19,20) carried by the drum (2) are centrifuged into driving engagement with the brake disc (14) to cause braking of the drum. The apparatus incorporates a fail-safe brake member (24) which is in screw-threaded engagement with a fixed part and is mechanically coupled to the rotatable brake disc (14) so that rotation of the brake disc (14) causes the fail-safe brake member to be screwed towards an operative position in which it causes progressive braking force to be applied between co-operating braking members (24,27,29).
摘要翻译： 一种防抱死装置包括电缆卷筒（2）和摩擦制动器，该摩擦制动器包括压靠固定制动环（15）的可旋转制动盘（14）。 在滚筒以退绕方向加速到一定速度的情况下，由滚筒（2）承载的棘爪（19,20）被离心成与制动盘（14）的驱动接合，从而制动滚筒。 该装置包括与固定部件螺纹接合并且机械地联接到可旋转制动盘（14）的故障保护制动构件（24），使得制动盘（14）的旋转导致故障保护 制动构件被旋转到操作位置，在该位置中，所述制动构件使辅助制动构件（24,27,29）之间施加逐渐制动力。
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公开(公告)号：US4790410A
公开(公告)日：1988-12-13
申请号：US136348
申请日：1987-12-22
申请人： George P. Sharp , Thomas W. Brown
发明人： George P. Sharp , Thomas W. Brown
CPC分类号： A62B35/0087 , A62B35/0056 , A62B35/04
摘要： Safety apparatus for used by workers at height comprises a fixed safety cable (1) secured in spaced relation to a fixture (2) by supports such as (3), and a coupling device (8) by which a safety line attached to a worker's safety harness can be coupled to such cable. The coupling device comprises a rotatably mounted tube (9) having a longitudinal slot (16) and profiled ends (9'). The tube (9) is slidable along the cable (1). On abutment of a tube end (9') against an arm (5) of a support (3) the tube becomes rotated to bring the slot (16) into register with the arm (5) so that the coupling device can travel past the support (3).
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