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:
Jul. 12, 1983
Filed:
May. 04, 1981
J Nigel Ellis, Wilmington, DE (US);
Other;
Abstract
A fall protection safety device is disclosed which is suitable for use in environments wherein suspended particulate matter is present. The device comprises an elongated tubular housing having an upper end guide block with a centrally located opening therein and a lower end guide block with a centrally located opening therein. The lower guide block has a plurality of openings spaced apart from and around its centrally located opening. A safety line is threaded within the tubular housing and movement thereof is prevented by camming a line-gripping ball and cage arrangement associated with a piston upwardly within a conical bore of a wedging ring. The piston has a centrally located opening through which the safety line is threaded and a serrated outer surface adjacent to and circumscribed by the inner surface of the elongate tubular housing.