Machine element or mechanism – Mechanical movements – Reciprocating or oscillating to or from alternating rotary
Patent
1989-02-27
1990-05-08
Chen, Jose V.
Machine element or mechanism
Mechanical movements
Reciprocating or oscillating to or from alternating rotary
74 8915, F16H 2702
Patent
active
049227688
ABSTRACT:
A driving device comprising a shaftless spiral rotatable around its longitudinal axis and enclosed by a limiting structure. The limiting structure has a first end region and a second end region corresponding to each end of the spiral. The shaftless spiral encloses a sliding body which is provided with an element projecting radially from the sliding body, between two adjoining spiral turns of the spiral and has a part located radially outside the spiral turns in a slot oriented substantially in the axial direction of the limiting structure. A driving element rotates the spiral, which moves the sliding body and consequently the projecting element in the longitudinal direction of the spiral.
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patent: 4226128 (1980-10-01), Dellantonio
patent: 4285499 (1981-08-01), Zukausky
patent: 4544083 (1985-10-01), Schroeder
Chen José V.
Spirac Engineering AB
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