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:
Mar. 06, 1979
Filed:
Mar. 17, 1977
Applicant:
Inventor:
William E Schmitz, Wilkinsburg, PA (US);
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E05C / ;
U.S. Cl.
CPC ...
49118 ; 49123 ; 49280 ; 49449 ;
Abstract
There is disclosed a motion control and locking apparatus for the passenger entry and exit doors of a mass transit vehicle, which passenger entry and exit doors are desired to be locked when the vehicle is moving between stations and are desired to be unlocked only when the vehicle has stopped at the desired location for passenger entry and exit within a station.
Schmitz, William. (1979). Mass transit vehicle door control apparatus (U.S. Patent No. 4142326). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4142326
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile