Rotary indexing device

Details Rotary indexing device Rotary indexing device

1991-07-10

1993-08-10

Graham, Matthew C.

Brakes

Wheel

Transversely movable

188366, 310 77, F16D 2504

Patent

active

052340813

ABSTRACT:
This invention provides a rotary indexing device which applies a uniform pressing force radially on a rotational shaft without applying any force axially thereon. The rotary indexing device comprises a rotational shaft which is rotatably journaled on a housing and is fixed on the rotor of a motor within the housing, a clamping sleeve arranged inside the housing to oppose the perimetric portion of the rotational shaft on one perimetric face thereof across a small interstice, an elastic member which covers the other perimetric portion of the clamping sleeve and forms with the housing a sealed pressurizing chamber, and a fluid path which introduces pressurizing fluid from outside of the housing into the pressurized chamber, which is characterized in that the clamping sleeve is formed with plural slits on the perimeter thereof so as to be deformable radially while the clamping sleeve perimetric portion is clamped with pressure from the pressurizing chamber to be radially pressed snugly on the perimetric portion of the rotational shaft.

REFERENCES:
patent: 2520204 (1950-08-01), Hancock
patent: 2542545 (1951-02-01), Lyman
patent: 2731312 (1956-01-01), Du Bois
patent: 3289137 (1966-11-01), Jones et al.
patent: 4497398 (1985-02-01), Patel
patent: 4877987 (1989-10-01), Flaig et al.
patent: 5072651 (1991-12-01), Kagita

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