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:
Apr. 30, 1985
Filed:
May. 06, 1983
Edward F Veverka, Franksville, WI (US);
McGraw-Edison Company, Rolling Meadows, IL (US);
Abstract
A disconnect switch is disclosed having a puffer interrupter electrically connected with and operated by a knife switch or fused disconnect switch. A puffer interrupter includes a divided pressure chamber having at least one exterior wall which is flexible and responsive to the pressure therein. A fixed tubular electrical contact is carried by a fixed interior wall within the puffer interrupter housing so as to establish flow communication through the fixed interior wall. A floating electrical contact is carried by the flexible wall and is adapted to engage and disengage from the fixed electrical contact in response to movement of the flexible wall. A snap spring biases the floating contact away from the fixed contact during arc interruption. The knife switch carries a camming member which electrically connects the knife switch to the floating contact and which overcomes the snap spring in such a manner that the knife switch is electrically disconnected from the load before the puffer interrupter is discharged and is electrically connected to the load after the puffer interrupter is closed. Several embodiments of the abutting ends of the fixed and floating contacts and pressure chamber walls are illustrated.