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:
Aug. 10, 1999
Filed:
Jul. 22, 1996
Ralph M Kallenbach, Elgin, IL (US);
Sargent & Lundy, Chicago, IL (US);
Abstract
A pipe restraint and methods for its use are disclosed. The pipe restraint includes a hollow cylindrical housing of varying diameter. A shaft having first and second wedges is received by the housing. The housing is attached to a fixed structural member, such as a wall and the shaft is attached to the pipe. Depending on the force being applied to the pipe, one of the wedges engages the housing at a point where the diameter changes. The housing's resistance to movement of the wedges varies between two points of differing diameter of the housing. In one embodiment a disc spring assembly is located at one end of the housing. In one method a gapped restraint is attached to a pipe and the size of the gap in the restraint is less than the anticipated movement of the pipe due to a static load.