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:
Mar. 14, 1995
Filed:
Dec. 27, 1993
Bradford W Petot, Cleveland Hts., OH (US);
Edward J Stropkay, Chesterland, OH (US);
Design & Manufacturing Corporation, Willoughby, OH (US);
Abstract
An electrothermal actuator includes a housing containing a working fluid and a heater disposed in the fluid within the housing. A piston is slidably disposed in the housing for movement in response to heating and cooling of the working fluid. An output member is coupled to the piston and movable between first and second positions for transmitting a drive force from the piston to a load. A latch mechanism is operatively connected to the output member for releasably latching the output member in the second position without continuously heating the working fluid. The latch mechanism includes a coil and a magnetic member that releases the latch in response to a force produced by a magnetic field generated when a current flows through the coil. The output member can move linearly or rotationally.