Thermal actuator for opening and closing windows

- Thermoforce Limited
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Description

FIG. 1 is a perspective view of a thermal actuator for opening and closing windows showing our new design;

FIG. 2 is a perspective view thereof in partially open condition;

FIG. 3 is a side elevational view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a rear elevational view thereof; and

FIG. 7 is a front elevational view thereof.

Referenced Cited
U.S. Patent Documents
3964125 June 22, 1976 Tansley
4140017 February 20, 1979 Cole et al.
Patent History
Patent number: D264177
Type: Grant
Filed: Nov 21, 1978
Date of Patent: May 4, 1982
Assignee: Thermoforce Limited (Cockermouth)
Inventors: Albert Cole (Keswick), Ronald F. Sturgeon (Bognor Regis)
Primary Examiner: James M. Gandy
Law Firm: Shoemaker and Mattare, Ltd.
Application Number: 5/962,619
Classifications
Current U.S. Class: D/8336; D/8400
International Classification: D0807;