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:
Feb. 23, 1993
Filed:
Jan. 23, 1992
Luc Mathieu, Annecy le Vieux, FR;
Alcatel Cit, Paris, FR;
Abstract
A valve comprising a valve body (1) provided with two openings (2, 3) each fitted with a flange (4, 5) for connection to pipework, and a moving valve member (6) for closing one of the two openings (3), said opening including a valve seat (26) whose profile corresponds to that of the valve member, said valve member (6) including means (14, 8, 9, 24) for displacing it towards its seat, the valve being characterized by the fact that said valve member (6) or its seat (26) is made of a shape memory alloy treated in such a manner that the shape memory effect is reversible, said piece (6, 26) made of shape memory alloy including channels (27, 31) enabling it to be fed with fluids for changing its state, thereby causing the said piece (6, 26) made of shape memory alloy to expand or contract as appropriate.