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. 04, 2002
Filed:
Dec. 29, 2000
Craig A. Sowada, Holdingford, MN (US);
Richard R. Ruegemer, St. Cloud, MN (US);
General Signal Corporation, Muskegon, MI (US);
Abstract
The present invention provides a device and method for locking a knife gate valve in a position, such as an open and/or closed position. The locking device has a pair of first posts disposed substantially parallel to the shaft. A swivel lock member is mounted to rotate substantially about the axis of the shaft and to reciprocate together with the shaft and the knife. The swivel lock member is selectively rotatable between an unlocked position at which the swivel lock member does not engage the first engageable portions and a locked position at which the swivel lock member engages both of the first engageable portions to prevent the swivel lock member from movement in at least one of the back and forth directions along the axis of the shaft.