Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
1999-12-08
2001-09-18
Young, Lee (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S423000, C029S426100, C029S426200, C029S426300, C029S428000, C029S596000
Reexamination Certificate
active
06289575
ABSTRACT:
FIELD OF THE INVENTION
The present invention is directed to a method of manufacturing a stacked stator assembly for a linear motor, and to an apparatus for implementing the method.
BACKGROUND OF THE INVENTION
A linear motor has two main mechanical components, a shaft (or “rotor”) and a stator. The shaft moves reciprocally into and out of the stator due to magnetic forces imposed by magnets and/or coils that lie in the shaft and/or stator.
BRIEF SUMMARY OF THE INVENTION
The inventor of the present invention has discovered an effective and inexpensive way to manufacture the stator from individual pieces. According to the embodiments of the present invention, the pieces are assembled around a removable form.
It is therefore an object of the present invention to provide a method of manufacturing a stacked stator assembly for a linear motor using a removable form, and an apparatus for implementing the method.
A broader object of the present invention is to provide a method of manufacturing a device which has at least one end hole leading to a larger hollow, using a removable form, and an apparatus for implementing the method.
These and other objects are achieved by providing a form for assembling a device, the device after assembly having a hollow and at least one end hole leading to the hollow, said form comprising an elongated member having a length extending from the end hole into the hollow, and being retractable from said hollow through the end hole; and a flexible member for occupying a space between a side of said elongated member and an inner wall of the hollow.
These and other objects are also achieved by providing a method for manufacturing a device from a plurality of parts, the parts when assembled defining an interior hollow and at least one end hole leading to the hollow, said method comprising (a) providing an elongated member having a length extending from the end hole into the hollow, and a flexible member for occupying a space between a side of the elongated member and an inner wall of the hollow; (b) placing the plurality of parts onto the elongated member and flexible member such that the flexible member occupies the space between the side of the elongated member and the inner wall of the hollow; (c) removing, subsequent to said steps (a) and (b), the elongated member from the hollow, leaving the flexible member within the hollow; and (d) removing, subsequent to said step (c), the flexible member from the hollow.
Further scope of applicability of the present invention will become apparent from a review of the detailed description and accompanying drawings. It should be understood that the description and examples, while indicating preferred embodiments of the present invention, are not intended to limit the breadth of the invention since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art.
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Ellard James Carl
Hollingsworth Philip
Lindberg Paul M.
California Linear Devices, Inc.
Kim Paul D
Luce Forward Hamilton & Scripps LLP
Young Lee
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