Working cylinder without piston rod
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United States of America Patent
Stats
-
Jun 4, 1991
Grant Date -
N/A
app pub date -
May 7, 1990
filing date -
May 5, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A working cylinder without piston rod in the form of a band cylinder. The band (3) in the cylinder covers (8) penetrates a receiving chamber (10) for a sealing and a guide member. Each sealing member comprises a strip-like sealing element on both sides of the band, made of elastic material and, on the piston side, in the form of a lip seal. The sealing elements (12, 13) are installed in the receiving chamber (10) with elastic pre-stressing relative to the band (3). Each guide member facing the sealing member has on both sides of the band (3) a rib-like guide element (23, 24), which is also elastically forced against the band (3) by pre-stressing the sealing elements (12, 13). The guide elements (23, 24) terminate in stop faces (28) with clearance (29) in front of the wall (15) of the receiving chamber (10). The result is that the band (3) can be deflected elastically from its desired position only by the amount of the clearance ( 29); subsequently the guide elements (23, 24) brace themselves form-lockingly against the cylinder cover (8) and prevent any further deflection of the band.
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