Test weight

Details Test weight Test weight

1993-01-07

1994-11-29

Williams, Hezron E.

Measuring and testing

Rotor unbalance

Dynamic

73462, 74573R, 180381, 301 521, 310 51, G01M 116

Patent

active

053679091

ABSTRACT:
A test weight for use with a counterbalanced motor for a compressor assembly, for example, including a body having an opening formed in it and sized to engage the outer diameter of an external eccentrically positioned ball bearing of the counterbalanced motor. A plurality of cantilevered spring fingers are integrally formed with the body along the opening in the test weight for spring gripping the external ball bearing. A plurality of centering pads formed on the fingers hold the center of mass of the test weight close to the center of mass of the ball bearing. In the preferred embodiment, stop tabs project from the centering pads to provide a positive stop upon contact with the outer race of the ball bearing. A method of testing a motor employs the test weight which is attached to the ball bearing to reproduce the application load requirements for the motor, and permits testing of the motor independently of the application.

REFERENCES:
patent: 3953074 (1976-04-01), Cox
patent: 4400037 (1983-08-01), Gentry
patent: 4893044 (1990-01-01), Bush et al.
patent: 5116106 (1992-05-01), Hardesty et al.

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