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. 17, 1987
Filed:
Jan. 27, 1986
Peter J Lupoli, Hamden, CT (US);
Donald J Mattis, Norwalk, CT (US);
Casco Products Corporation, Bridgeport, CT (US);
Abstract
An electric switch construction having a housing with electric terminals, two concentric springs disposed in the housing and respectively connected with the terminals, and a movable contactor cup adapted to establish continuity between the terminals and a conductive, barrel portion of the housing. The outer spring biases the cup to a circuit-closing position wherein both terminals are connected to the barrel portion of the housing. A manually-engageable plunger is arranged to engage the cup. When the plunger is actuated, first one terminal is disconnected from the barrel portion of the switch, and subsequently, upon further movement of the plunger, the remaining terminal is disconnected therefrom. The plunger carries an O-ring which forms a partial seal along the bore of the housing, so as to minimize the accumulation of dirt or moisture from the surfaces where electrical contact is made or broken. As the switch is operated, the plunger tends to rotate the cup in small increments, such that different contact points on the cup are presented to the cooperable surface against which the cup is seated. As a result, improved conductivity is had over extended periods of use. In addition, the seal of the switch minimizes problems that normally occur in harsh environments such as are encountered in the automotive field.