Machine element or mechanism – Mechanical movements – Grip units and features
Patent
1982-06-01
1985-02-19
Krizmanich, George H.
Machine element or mechanism
Mechanical movements
Grip units and features
74191, 74796, F16H 1516, F16H 1556
Patent
active
044997817
ABSTRACT:
This invention relates to a friction-drive type mechanical transmission of continuously variable transmission ratios in a range comprising a plurality of the operational transmission ratios separated by a plurality of the transitional transmission ratios. The mechanical transmissions of the present invention comprises a pair of the conical rotating members connected to a pair of the power shaft couplings, respectively, which pair of the conical rotating members are coaxially disposed providing a void space therebetween comprising a series of the cylindrical shell voids of progressively varying diameters interconnected by a series of the frustum shell voids. A plurality of the chamfered rollers of the geometry of a cylinder with two chamfered ends rotatable about their own axis are disposed within said void space between two conical rotating members on a plane perpendicular to the central axis of said two conical rotating members wherein the rotational motion of said two rotating conical members are coupled to one another by the chamfered rollers under pressed frictional contact with said two conical rotating members, which pressured frictional contact is provided by the surface of the cylindrical midsection of the chamfered rollers in contact with the outer and inner surfaces of the cylindrical shell voids or by the surfaces of two chamfered ends of the chamfered rollers respectively in contact with the outer and inner surfaces of the frustum shell voids intermediate two adjacent cylindrical shell voids. The transmission ratio is varied by shifting the chamfered rollers in the direction parallel to the central axis of said two conical rotating members.
REFERENCES:
patent: 765956 (1904-07-01), Bucknam
patent: 1207216 (1916-12-01), Roberts
patent: 1232243 (1917-07-01), Dick
patent: 1318588 (1919-10-01), Preston
patent: 1468401 (1923-09-01), Roberts
patent: 1489521 (1924-04-01), Conrad
patent: 1844239 (1932-02-01), Boehme et al.
patent: 1844703 (1932-02-01), Thompson
patent: 3115044 (1963-12-01), Andrews
patent: 4183253 (1980-01-01), Borello
Bednarek Michael David
Krizmanich George H.
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