Title (en)

ELEVATOR BRAKE AND SAFETY

Publication

EP 0183616 A3 19871111 (EN)

Application

EP 85402282 A 19851122

Priority

FR 8417901 A 19841123

Abstract (en)

[origin: EP0183616A2] Two hydraulically controlled brakes (32) are attached to an elevator car (10) and each engages a guide rail (18). Each brake (32) is applied by a spring (40). The spring is compressed to release the brake, by actuating hydraulic cylinders (31a) through an electromechanically operated master cylinder (31) that responds to a signal from the motor control (16). An electromechanical release valve (52) is operated by a govenor (22), when an overspeed condition exists to quickly release the pressure in the cylinders, applying the brake.

IPC 1-7

B66B 5/18

IPC 8 full level

B66B 5/18 (2006.01); B66B 5/16 (2006.01)

CPC (source: EP)

B66B 5/16 (2013.01)

Citation (search report)

• [X] GB 345035 A 19310319 - ASS ELECT IND
• [X] US 2925151 A 19600216 - CHANDLER CLIFFORD E
• [A] US 2122943 A 19380705 - OTTO JAECKEL FRANZ
• [A] GB 377059 A 19320721 - WESTINGHOUSE ELECTRIC & MFG CO
• [A] US 1803762 A 19310505 - ALEXANDER MARKS

Designated contracting state (EPC)

CH DE FR GB LI NL SE

DOCDB simple family (publication)

EP 0183616 A2 19860604; EP 0183616 A3 19871111; AU 5196586 A 19860618; AU 568036 B2 19871210; CA 1262875 A 19891114; CN 1007613 B 19900418; CN 85109248 A 19860702; FR 2573741 A1 19860530; FR 2573741 B3 19870320; JP S62500864 A 19870409; WO 8603184 A1 19860605

DOCDB simple family (application)

EP 85402282 A 19851122; AU 5196586 A 19851118; CA 495759 A 19851120; CN 85109248 A 19851120; FR 8417901 A 19841123; JP 50536285 A 19851118; US 8502259 W 19851118