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:
Aug. 30, 1983
Filed:
Jan. 03, 1983
Russell M Hartung, Webster, NY (US);
Larry Appleman, Rochester, NY (US);
Warren R Alexander, Pittsford, NY (US);
General Signal Corp., Rochester, NY (US);
Abstract
In order to provide for automatic replacement of lamp bulbs (lamps) when they fail to illuminate and to enhance the reliability of signal lamps, such as those which signal oncoming trains as they move along railway tracks, a plurality of lamps are disposed angularly spaced from each other on one side of a turntable which is rotatable under spring bias to bring the lamps successively into positions in alignment with the lens of the signal lamp. A latching mechanism having a latch member incorporated into the turntable and a detent member operated by a solenoid provides for releasable engagement of the turntable so as to enable it to move between the successive positions. The primary one of the lamps is wired directly into the signaling system while the secondary lamp or lamps is wired to be operated by a circuit responsive to the illumination of the lamp which is in alignment with the lens and which controls actuation of the solenoid and release of the turntable as well as switching of power to the secondary lamp or lamps.