Dashpots
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 19, 1995
Grant Date -
N/A
app pub date -
May 18, 1994
filing date -
May 27, 1993
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A liquid dashpot has a casing comprising a main body and bottom cover. The main body contains a liquid chamber which is divided into two discrete spaces by a vane member. One end wall of the chamber has porting passage means formed between the outer face of said wall and the bottom cover to provide restricted communication between the chamber spaces. A flexible diaphragm forms a compensation chamber on the bottom cover subject to atmospheric pressure. The chamber can communicate with the spaces within the liquid chamber through non-return means that block super-atmospheric flow to the compensating chamber. The porting and the communicating passage means between the spaces and the compensating chamber are formed integrally in the die-cast main body and/or the bottom cover, requiring no machining. Assembly is facilitated by bringing together the bottom cover, flexible diaphragm and non-return means as a sub-assembly.
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