Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2000-03-20
2001-04-24
Ramirez, Nestor (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S012060, C310S014000, C310S023000, C290S03800C, C335S266000, C335S267000
Reexamination Certificate
active
06222294
ABSTRACT:
DESCRIPTION
1. Technical Field
The present invention relates to solenoids and motors generally and, more particularly, but not by way of limitation, to novel combinations of solenoids and motors which can provide: (1) linear and rotary motion, (2) an adjustable stroke solenoid, or (3) a linearly adjustable solenoid.
2. Background Art
Rotary and linear actuators are employed in a variety of applications such as instrumentation and manufacturing, for example. Often, such actuators must combine linear and rotary motion and sometimes it is desirable that the stroke of a linear actuator be selectively adjustable. Many known devices of these types are relatively complex and expensive to manufacture.
Accordingly, it is a principal object of the invention to provide combinations of solenoids and motors which can provide: (1) linear and rotary motion, (2) an adjustable stroke solenoid, or (3) a linearly adjustable solenoid.
It is a further object of the invention to provide such combinations of solenoids and motors which are relatively simple and inexpensive to manufacture.
Other objects of the present invention, as well as particular features, elements, and advantages thereof, will be elucidated in, or be apparent from, the following description and the accompanying drawing figures.
DISCLOSURE OF INVENTION
The present invention achieves the above objects, among others, by providing, in a preferred embodiment, an actuator, comprising: a shaft; a solenoid, having a coil and a core, disposed at a first selected position on said shaft, with said core being fixedly attached to said shaft such that energization of said coil will cause said shaft to move axially; and a rotary motor, having a stator and a rotor, disposed at a second selected position on said said shaft, with said shaft passing through said rotor, an external surface of said shaft and an internal surface of said rotor having complementarily engaging surfaces such that rotation of said rotor will cause rotation of said shaft and axial motion of said shaft will be isolated from said rotor.
REFERENCES:
patent: 2860266 (1958-11-01), Schrader
patent: 4197488 (1980-04-01), Kant
patent: 4985637 (1991-01-01), Isozumi
patent: 5052235 (1991-10-01), Isozumi
Palmero Albert
Stacy Timothy D.
Crozier John H.
Mullins Burt
Ramirez Nestor
Tri-tech, Inc.
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