Device for applying braking torque to a shaft
AssigneeLucas Industries public limited company
InventorJohn H. Harvey
Life of this patent
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Abstract
A shaft is supported in a housing by single row, deep-groove, radial ball bearings having diametral clearances which will permit axial displacement between their inner and outer races, abutment faces which are located with respect to the shaft and housing respectively engage the inner and outer races respectively of the bearings so as to take up play which results from the diametral clearances, abutment elements which engage the respective inner races can coact with the housing as a result of increase in the aforesaid axial displacements, to provide a braking effect between the shaft and the housing.
Claims6
A device for applying a braking torque to a shaft in response to a predetermined level of axial load on said shaft, comprising a housing, a single-row, deep-groove, radial ball bearing whose inner race is fixed to said shaft and whose outer race engages said housing, said bearing having a diametral clearance which will permit an axial displacement between its inner and outer races, said housing having an abutment face which maintains the outer race of said bearing in an intitial position which is axially displaced relative to the inner race by an amount which is at least sufficient to take up axial play resulting from said diametral clearance, and an abutment element which is axially fixed with respect to said inner race and can coact with a fixed part on said housing as a result of increase of said axial displacement of said inner race.
Dependencies are inferred from the claim text.