HYDRAULIC JACK STROKE CUSHIONING MEANS

A hydraulic jack is provided with means to cushion the piston and rod assembly at the end of its stroke. The cushioning means comprises a pair of resiliently supported sleeves, one placed on each side of the piston, that cooperate with respective bores in the housing of the jack to serve to progress...

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Bibliographische Detailangaben
1. Verfasser: LAWRENCE F. BERG
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A hydraulic jack is provided with means to cushion the piston and rod assembly at the end of its stroke. The cushioning means comprises a pair of resiliently supported sleeves, one placed on each side of the piston, that cooperate with respective bores in the housing of the jack to serve to progressively restrict the flow of fluid to an exhaust port as the piston nears the end of its stroke. The resilient mounting of the sleeves, comprising annular elastomeric seals, permits limited radial movement thereof with respect to the piston to compensate for any eccentricity of the bores relative to the piston.