Machine element or mechanism – Mechanical movements – Rotary to or from reciprocating or oscillating
Patent
1998-10-23
2000-08-08
Fenstermacher, David M.
Machine element or mechanism
Mechanical movements
Rotary to or from reciprocating or oscillating
74 50, F16H 3712
Patent
active
060984775
ABSTRACT:
A crank device performs power conversion between reciprocal movement and rotational movement using a planetary gear mechanism without causing inclination of a connecting rod. An internally toothed sun gear is spaced a predetermined distance from the connecting rod. A planetary gear as well as a planetary gear shaft secured at one end of the planetary gear are rotatably received within a crank member. An arm portion is formed on the other end of the planetary gear shaft and extends radially outwardly a distance corresponding to the radius of the pitch circle of the planetary gear. One end of the connecting rod is pivotably connected to the forward end of the arm portion. A pair of bearings rotatably support the opposite ends of the planetary gear shaft and are disposed at spaced positions within the crank member. One of the bearings is arranged adjacent to the connecting rod.
REFERENCES:
patent: 399492 (1889-03-01), Burke
patent: 634194 (1899-10-01), Woodward
patent: 1210861 (1917-01-01), Sitney
patent: 3693464 (1972-09-01), Wieckmann
patent: 3886805 (1975-06-01), Koderman
patent: 3990325 (1976-11-01), Bueren
Ogai Shuji
Takachi Ken
Fenstermacher David M.
Longwell Japan Co., Ltd.
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