The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 04, 1985
Filed:
Sep. 21, 1983
James A Armstrong, Cincinnati, OH (US);
Other;
Abstract
A hand operated safety device for controlling the descent of a person along a guide track affixed to the exterior face of a building wall. The descent device is clamped to the track and includes a hydraulically operated brake which can be actuated to vary the frictional force between the descent device and the track surface to control the speed of descent. The device includes a preset mechanism for applying a fixed clamping force to the track depending on the user's weight. In a second embodiment, the track is a rail of triangular cross section having a continuous rack which is engaged by a brake operated spur gear on the descent device. A user wearable harness is slung beneath the descent device for lowering the person to the ground.