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:
Oct. 01, 1996
Filed:
Mar. 31, 1995
Kenneth F Folk, Harrisburg, PA (US);
Joseph M Bowling, Carlisle, PA (US);
The Whitaker Corporation, Wilmington, DE (US);
Abstract
A safety guard system provided for a machine having a ram which is movable toward and away from a work zone and an actuator which is operable for driving the ram through a ram stroke toward the work zone. The safety guard system includes a safety guard mounted for movement along a guard path between open and closed positions with respect to the work zone. The safety guard is releasably coupled to the ram for movement during the ram stroke from the open to the closed position before completion of the ram stroke, and the safety guard is arranged to decouple from the ram upon either one of reaching the closed position or earlier encountering an obstruction in the guard path. A guard sensor effects a first signal upon the safety guard reaching the closed position, and an object sensor effects a second signal upon decoupling of the safety guard from the ram. A controller is responsive to the first and second signals such that the controller enables completion of the ram stroke upon receiving the first signal, and the controller terminates the ram stroke upon receiving the second signal prior to receiving the first signal.