Expansible chamber devices – Sealed opening in longitudinal wall of chamber for receiving...
Patent
1998-04-07
1999-12-07
Ryznic, John E.
Expansible chamber devices
Sealed opening in longitudinal wall of chamber for receiving...
277345, F01B 2900
Patent
active
059964693
ABSTRACT:
A rodless power cylinder assembly comprising a cylinder having a pair of side walls, at least two bearing grooves being formed in each of the side walls, each bearing groove extending substantially parallel to a bore. Each bearing groove is operative to receive at least a portion of a bearing which engages a trolley assembly. A slot extends outwardly from the bore through the upper surface of the cylinder. Means are provided for sealing the slot during the reciprocal movement of the piston, the means including at least one external groove formed in the upper surface of the cylinder and at least one internal groove formed in the bore of the cylinder, the internal groove being disposed substantially below and in vertical alignment with the external groove. An external seal having at least one downwardly extending ridge is operative to engage the external groove and an internal seal having at least one upwardly extending ridge is operative to engage the internal groove, the internal and external seals thereby sealing the slot during the reciprocal movement of the piston.
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Greenco Manufacturing Corporation
Ryznic John E.
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