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:
Jun. 07, 1977
Filed:
Jan. 26, 1976
Bernard S Deubel, Mansfield, OH (US);
Therm-O-Disc Incorporated, Mansfield, OH (US);
Abstract
A method of manufacturing sealed thermostats or the like is disclosed in which male and female members are assembled with an interference fit to produce a seal which is maintained through a predetermined operating temperature range. The minimum interference during assembly is selected so that such minimum interference is greater than the difference in the temperature during assembly and the most adverse seal temperature to be encountered within the temperature range, times the difference in coefficients of thermal expansion and contraction between the members times the linear dimension of the seal. In addition, the two members are selected so that the maximum total elastic deformation is greater than the difference in coefficient of thermal expansion and contraction times the difference between the maximum and minimum temperatures within the temperature range times the linear dimension. Preferably, the interference is selected so that the female member is stressed beyond its elastic limit, at least when the device is cycled throughout the temperature range to produce a mechanical interlocking of the two parts. The assembly of the device may also be arranged to provide calibration and/or gauging of the device.