Title:
HYDRAULIC SHOCK ABSORBER FOR ELEVATOR
Document Type and Number:
Japanese Patent JPS6037434
Kind Code:
A
Abstract:
A hydraulic elevator buffer includes a fluid container 16 containing a piston 12 which is pushed down within a cylinder 18 into a volume of hydraulic fluid. The buffer has no seals separating its interior from the atmosphere. As the piston 12 is pushed down, the displaced liquid is forced through ports 18a in the cylinder 18 which gives rise to a restricting force. The displaced liquid escapes into a chamber 19b in which an air/liquid mixture is produced. An annular passage 19d surrounds the piston at the top of the container, and the mixture is forced through the passage, separating the fluid and air. The fluid condenses down, lubricating the piston. The air is forced out through the space 16b between the sleeve 16c of the fluid container and the piston, removing any contaminants around the piston. The container is provided with a fluid filler hole 26 which is at an angle to the horizontal at which a minimum and maximum fluid level in the container can be determined by looking in the hole. The maximum is the level 26a at which the fluid flows out of the hole, and the minimum is the lowest level 26b at which the fluid can be seen in the hole.
More Like This:
| JPH0396728 | BUFFER |
| JP2004018178 | ELEVATOR DEVICE |
Inventors:
RUISU BIARII
FURIDERITSUKU PII MENETSUTO
FURIDERITSUKU PII MENETSUTO
Application Number:
JP14408984A
Publication Date:
February 26, 1985
Filing Date:
July 11, 1984
Export Citation:
Assignee:
OTIS ELEVATOR CO
International Classes:
B66B5/28; F16F9/06; F16F9/32; F16F9/36; F16F9/34; F16F9/48; F16F9/40; (IPC1-7): B66B5/28; F16F9/06; F16F9/34
Domestic Patent References:
| JPS4820876U | 1973-03-09 |
Attorney, Agent or Firm:
Minoru Nakamura
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