Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1993-05-12
1995-02-21
Hall, Carl E.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
29261, 294264, 29578, 29764, B23P 1904
Patent
active
053904044
ABSTRACT:
An improved tool for pulling off a rotor of a motor from a shaft or a fan from a shaft, which improved tool is provided with hooked arms that are releasably but securely held at one end in the housing, without the use of retaining clips, so that the arms do not fall off during use or become lost, and so that they do not interfere with the use of the tool when using the securing bolts for pulling off a rotor. The hooked arms of the invention are also hexagonal shaped, and securing bolts are provided with hexagonal-shaped recesses in their heads, so that the hooked arms may themselves be used for rotating the securing bolts when pulling off a rotor of a motor from a shaft. In addition, the housing of the improved tool of the invention is circular in shape, and is provided with a plurality of equally-spaced holes about its circumference, which holes received the hooked ends of the hooked arms, so that various configurations of hooked arms may be provided to best suit the configuration of vanes and type of fan being pulled off a shaft. To ensure that the each hooked arm is releasably retained in a respective hole of the housing, the end of the arm is provided with a hook defined by a straight piece extending at an acute angle with respect with the main, elongated body of the arm.
REFERENCES:
patent: 2188074 (1940-01-01), Condon
patent: 4077103 (1978-03-01), Kelley
Blower Motor Puller advertisement, Trapezoidal, Inc.
Advertisement for, and photograph of prior-art tool :Blower Wheel Puller.
Two photographs showing a modification of the tool disclosed in U.S. Pat. No. 4,077,103-Kelley.
Berg Michael
Rubino Carol
Rubino Michael
Gerstein Milton S.
Hall Carl E.
Sensible Products, Inc.
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