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US 5,967,018 AGranted
Hydraulic motor with radial propulsors retained against corresponding sliding-contact surfaces by resilient means and by mechanical-retaining means located outside said propulsors
AssigneeRiva Calzoni S.p.A.
InventorAlessandro Breveglieri
Life of this patent
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Abstract
A hydraulic motor with propulsion members located between an eccentric cam associated with a shaft and a counter-element. The propulsion members consist of two elements slidable telescopically with respect to one another in the longitudinal direction and having annular bearing shoulders kept pressed against corresponding sliding-contact surfaces of the eccentric cam and the counter-element by springs. The resilient springs are located outside the propulsion members and are arranged between the annular edges and elements for mechanically retaining them.
Claims34
A hydraulic motor comprising:
- propulsion members angularly spaced around an axis;
- a shaft rotating about said axis;
- an electric cam connected with said shaft;
- a counter-element surrounding said cam, said propulsion members being located between said cam and said counter-element and each consisting of two elements telescopically slidable with respect to one another in a longitudinal direction and having annular bearing edges kept pressed against corresponding sliding-contact surfaces of said eccentric cam and said counter-element;
- resilient means for pressing said edges against said surfaces;
- and
- associated means independent of said elements, said resilient means being resilient means arranged outside said propulsion members between said annular edges and said associated means mechanically retained by said associated means, said associated means having inwardly extending formations and said propulsion members having outwardly extending formations, said resilient means being located between said formations.
4 more elements
Dependencies are inferred from the claim text.