Machine element or mechanism – Mechanical movements – Reciprocating or oscillating to or from alternating rotary
Patent
1999-04-14
2000-11-14
Fenstermacher, David
Machine element or mechanism
Mechanical movements
Reciprocating or oscillating to or from alternating rotary
744248R, 74459, F16H 2702, F16H 2902
Patent
active
06145396&
ABSTRACT:
A transmission includes an output gear, which has an integral shaft that is formed with a threaded axial hole and that has a long shaft section and a short shaft section. The output gear is disposed between a first housing half and a second housing half, which are formed with first and second cylindrical portions, respectively. The long shaft section is disposed rotatably within the first cylindrical portion. The short shaft section and a thrust bearing are disposed rotatably within the second cylindrical portion. As such, a threaded rod which engages the threaded axial hole in the shaft can move axially and smoothly on the first and second housing halves, thereby reducing output torque loss of the threaded rod when moving in a first direction. Because the first and second housing halves are interconnected removably, by reassembling the transmission, the long shaft section can be moved into the second cylindrical portion, while the short shaft section and the thrust bearing can be moved into the first cylindrical portion. In this case, when the threaded rod moves in a second direction that is opposite to the first direction, the output torque loss thereof can be reduced.
REFERENCES:
patent: 4903535 (1990-02-01), Kikuta et al.
patent: 5086900 (1992-02-01), Kikuta et al.
patent: 5472065 (1995-12-01), Vergin
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