Title: Method of assembling calibrated switch

Abstract: A wedging member, such as a ball, is frictionally engaged with inclined supporting ends of a pair of contact elements at a calibration temperature. The wedging member retains the positioning of the supporting ends as the temperature is changed from the calibration temperature to a hardening temperature for a hardenable material, such as an inorganic-base chemical-setting cement, for rigidly securing the supporting ends.

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Inventors: Wolfe, Denis G. (Santa Ana, CA, US)

Application Number: 718288
Filing Date: 1976-08-27
Publication_date: 1977-07-05
Assignee: Robertshaw Controls Company (Richmond, VA)
Primary Class(es): 29/622 337/112, 337/362
Other Classes:
US Patent Ref:

1799651	Apr, 1931	Siegmund	200/246.
2248531	Jul, 1941	Harris	337/112.
2745924	May, 1956	Coates	337/372.
3148258	Sep, 1964	Dales	337/372.
3230607	Jan, 1966	Belzer	29/622.
3670281	Jun, 1972	Rattan	337/112.
3747208	Jul, 1973	Rattan	29/622.
3816910	Jun, 1974	Jess et al.	29/622.

Other Refs:
Primary Examiner: Duzan, James R.
Assistant Examiner:
Attorney: O'Brien & Marks