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:
Aug. 25, 1981
Filed:
Oct. 01, 1979
Werner R Bauer, Radnor, PA (US);
Robertshaw Controls Company, Richmond, VA (US);
Abstract
A switch construction having a support carrying switch contacts and an electrical coil that has an armature operatively associated with the switch contacts to cause a switching operation therewith when the coil is energized to attract the armature from a first position thereof to a second position thereof relative to the coil. A mechanical spring arrangement is operatively associated with the armature to continuously resist the movement thereof from the first position thereof to the second position thereof with an increasing force that overcomes the increasing pull in force of the energized coil on the armature before the armature reaches its zero gap with the energized coil whereby the spring arrangement prevents the armature from reaching its zero gap and thereby causes the switch construction to be relatively noiseless in the operation thereof.