Hydraulic ram safety device with circular brake

Details Hydraulic ram safety device with circular brake Hydraulic ram safety device with circular brake

B - Operations, Transporting

66

B

187/14

B66B 5/16 (2006.01)

Patent

CA 1190157

HYDRAULIC RAM SAFETY DEVICE WITH CIRCULAR BRAKE Abstract of the Disclosure A safety brake for hydraulic rams, particularly for hydraulic elevators, includes a plurality of braking members disposed around the piston in a circular array. The outer surfaces of the spaced apart braking members together form the shape of a truncated cone, and the inner surface of a stationary housing surrounding the brake members is complimentarily shaped. The angle of inclination of the two conical surfaces is small, and the braking members move downwardly and inwardly only a short distance to engage the piston, so that the conical geometry of the brakes and housing surfaces does not produce significantly mismatched sliding surfaces as the brake members move downwardly.

409036

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