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:
May. 22, 1990
Filed:
Feb. 13, 1989
Applicant:
Inventor:
Arnold M Morris, Chester Township, Morris County, NJ (US);
Assignee:
Inventio AG, Hergiswil, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B66B / ;
U.S. Cl.
CPC ...
187 57 ; 187 61 ; 49120 ;
Abstract
An elevator car having a clutch carried by a car door for engaging drive rollers of an adjacent hatch door via 'open' and 'close' vanes of the clutch. A door operator mounted on the car includes a door drive arm which is linked to the car door via a door crank arm. A door lock carried by the door clutch prevents normal operation of the door crank arm, unless the open vane of the door clutch contacts a hatch door drive roller. Thus, unless the car is in a floor landing zone, the car door cannot be opened by a passenger inside the car.