Elevator – industrial lift truck – or stationary lift for vehicle – With barrier for regulating access to load support – Includes motor or motor driven linkage for shifting barrier
Reexamination Certificate
2007-07-17
2007-07-17
Salata, Jonathan (Department: 2837)
Elevator, industrial lift truck, or stationary lift for vehicle
With barrier for regulating access to load support
Includes motor or motor driven linkage for shifting barrier
C187S313000
Reexamination Certificate
active
10775233
ABSTRACT:
An elevator door unit includes cage doors, a cage door lock unit, hall doors, and a lock release unit. The cage doors are provided in a cage which moves in a shaft. The cage door lock unit limits and locks the opening width of the cage doors to the width not to permit passing of passengers. The hall doors are provided in a landing hall, and opened interlocking with the cage doors, when the cage stops in a range of facing to the cage doors. The lock release unit releases the cage door lock unit within the opening width by opening the cage doors by manual operation, when the cage stops in a range that the cage doors face to the hall doors.
REFERENCES:
patent: 3878919 (1975-04-01), Dewhurst
patent: 4357998 (1982-11-01), Gibson et al.
patent: 4469200 (1984-09-01), Young et al.
patent: 4529065 (1985-07-01), Kraft
patent: 4926975 (1990-05-01), Morris
patent: 1129668 (1996-08-01), None
Fujita Yoshiaki
Murakami Shin
Togashi Norihito
Tonoki Kenzo
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Salata Jonathan
Toshiba Elevator Kabushiki Kaisha
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