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:
Nov. 20, 1990
Filed:
Jun. 27, 1988
Thomas J Burg, Forest Hills, PA (US);
Robert J Anderson, McMurray, PA (US);
William K Cooper, Monroeville, PA (US);
AEG Westinghouse Transportation Systems, Inc., Pittsburgh, PA (US);
Abstract
A rotary switch is provided for a people mover guideway having a predetermined tire path, guidebeam and electric rail configuration. The rotary switch routes a transit car from one entry guideway path to at least either of the two exit guideway paths or vice versa. A movable elongated structural switch frame member has guidebeam, electric rail and tire path structure on one side compatibly with the guideway configuration to provide car routing to one of the two exit paths in one of two switch positions; the movable switch frame further has guidebeam, electric rail and tire path structure on another side compatibly with the guideway configuration to provide car routing to the other of the two exit paths in the second switch position. Switching is achieved by rotating a movable part of the switch 180.degree. degrees about its longitudinal axis. A first fixed frame supports a drive shaft which in turn supports a first end of the movable switch frame. A second fixed frame supports a second shaft which in turn supports the second end of the movable switch frame. The movable frame is locked in either of its two positions by a first pair of lock pins for one end of the movable switch frame and a second pair of lock pins for the other end of the movable switch frame. Each of the lock pins extends through an associated opening in the associated fixed frame and the associated end of the movable switch frame and is supported by spherical bearings relative to the fived and movable frames. Hydraulic actuators insert and withdraw the lock pins into and out of movable frame locking position when the movable switch frame is located in either of its two rotational positions.