Measuring and testing – Rotor unbalance – Gravitational moment tilts rotor about axis transverse to...
Patent
1977-05-06
1978-02-28
Goldstein, Herbert
Measuring and testing
Rotor unbalance
Gravitational moment tilts rotor about axis transverse to...
G01M 104
Patent
active
040758915
ABSTRACT:
A static vehicle wheel balancer has a base which is supported on the floor and which mounts a vertical post. A wheel balance head is provided for receiving and centering a tire and wheel assembly to be balanced and has a level for indicating unbalance. A universal pivot between the balance head and the post is provided wherein the pivot point of the balance head is maintained coincident with the post axis, even when the post axis is inclined from the vertical. In one embodiment, the pivot assembly is formed by an upwardly facing spherical anvil surface that supports three equal diameter balls. The balancing head mounts a single pivot ball that is supported by the three support balls. Resilient means are provided for cushioning the pivot ball. In another embodiment of the invention, the universal pivot action is obtained by the use of a Hooke universal joint. Another embodiment embodies a universal joint of the Hooke type wherein the spider arms are made in the form of flexible blades. Another embodiment embodies a universal pivoting assembly wherein two sets of cylindrical rollers roll on cooperating concave and convex cylindrical surfaces.
REFERENCES:
patent: 2842966 (1958-07-01), Rued
patent: 3096655 (1963-07-01), Peterson
FMC Corporation
Goldstein Herbert
Tripp C. E.
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