Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1990-08-27
1991-11-05
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310342, 310344, 384100, 384120, H01L 4108, F16C 1700
Patent
active
050633228
ABSTRACT:
A feed mechanism is constructed with a piezoelectric actuator embedded in the front end of a square sliding shaft, which is supported by hydrostatic guide surfaces formed on a guide base for sliding motion in the axial direction. A cooling jacket having a helical channel on its outside surface is provided at the periphery of the piezoelectric actuator. A part of pressurized fluid fed to the hydrostatic guide surfaces is led to the helical channel of the cooling jacket through a cooling oil feeding channel formed in the sliding shaft, and fluid in the helical channel is drained to a low pressure space through an oil discharging channel formed in the sliding shaft.
REFERENCES:
patent: 3058559 (1962-10-01), Ohraberger
patent: 3432213 (1969-03-01), Adams
patent: 3508430 (1970-04-01), Edmondson
patent: 3658393 (1972-04-01), Luthi
patent: 3781070 (1973-12-01), Uhtenwoldt et al.
patent: 3899222 (1975-08-01), Mendelevsky et al.
patent: 4630942 (1986-12-01), Tsumaki et al.
patent: 4648724 (1987-03-01), Sugiyami et al.
patent: 4865465 (1989-09-01), Sugita et al.
Hori Nohumitsu
Nakane Yasumasa
Sugita Kazuhiko
Budd Mark O.
Dougherty Thomas M.
Toyoda Koki Kabushiki Kaisha
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