METHOD OF MANUFACTURING A STACKED STATOR ASSEMBLY FOR A LINEAR MOTOR

Title:

METHOD OF MANUFACTURING A STACKED STATOR ASSEMBLY FOR A LINEAR MOTOR

Document Type and Number:

WIPO Patent Application WO2001048888

Kind Code:

A3

Abstract:

A stator assembly (10) has a pair of end holes (12a, 16a) leading to a hollow region (14a) which has a larger diameter than the end holes (12a, 16a). The assembly (10) is manufactured around an elongated pole (22) having a diameter equal to the end holes (12a, 16a), which is surrounded by a temporary sleeve (24) whose thickness fills the gap between the pole (22) and the inner wall of the hollow region (14a). The pieces of the assembly (10) are placed onto the pole (22) such that the sleeve (24) lies within the hollow region (14a), to thereby align them correctly with one another. After the pieces are secured to each other, the pole (22) is removed, leaving the sleeve (24) within the hollow region (14a), and then the sleeve (24) is removed (24). The sleeve (24) may be flexible in order to expedite is removal from the hollow (14a), and also may be of a magnetic material (17) that is kept in place by magnetic forces generated by the stator assembly (10) or by the pole (22).

Inventors:

HOLLINGSWORTH PHILIP
ELLARD JAMES CARL
LINDBERG PAUL M

Application Number:

PCT/US2000/042598

Publication Date:

January 03, 2002

Filing Date:

December 05, 2000

Export Citation:

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Assignee:

CALIFORNIA LINEAR DEVICES INC (US)

International Classes:

H02K41/025; H02K15/02; H02K41/02; (IPC1-7): B64C13/18; H02K37/00; H02K41/00; H02K41/02

Foreign References:

US5831353A	1998-11-03
US5734209A	1998-03-31
US5691582A	1997-11-25
US5440183A	1995-08-08
US4810914A	1989-03-07
US4335338A	1982-06-15
US4215283A	1980-07-29

Other References: