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US 2003/0141670 A1Published application
Seal
AssigneeMeritor Heavy Vehicle Braking Systems (UK) Limited
InventorsCarl Edward Heinlein, Bruce Montgomery Gardiner
Life of this patent
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AssigneeMeritor Heavy Vehicle Braking Systems (UK) Limited
InventorsCarl Edward Heinlein, Bruce Montgomery Gardiner
Estimating the term…
A seal for sealing an interface between a piston shaft (4) of an expander mechanism for a disk brake and an inner surface of a housing (5) of the brake in which the shaft is received is described. The seal comprises: a laterally outwardly disposed portion (11) adapted to engage a portion of the housing in fixed relation therewith; a laterally inwardly disposed portion (12) which is adapted to form a static seal with a surface of the shaft; and an intermediate portion (13) interconnecting said laterally outwardly disposed portion (11) and said laterally inwardly disposed portion (12) such that the laterally inwardly disposed portion is permitted to move axially together with the shaft relative to the laterally outwardly disposed portion, in use, in static sealing relationship with the shaft.
A seal for sealing an interface between a piston shaft of an expander mechanism for a disk brake and an inner surface of a housing of the brake in which the shaft is received, the seal comprising:
A seal as claimed in any one of the preceding claims, wherein lateral dimensions of the intermediate portion are chosen to be significantly greater than the minimum lateral distance, in use, in the unadjusted condition of the expander mechanism, between the laterally outwardly disposed portion and the laterally inwardly disposed portion.
A seal as claimed in any one of the preceding claims, wherein the laterally inwardly disposed portion comprises a rim having an axially and laterally inwardly disposed bevel for facilitating insertion of a piston shaft through the seal, in use.
A seal as claimed in any one of the preceding claims, wherein the laterally outwardly disposed portion comprises a relatively thin, laterally outer, axially extending, extension of the intermediate portion, bonded to a substantially rigid laterally outermost member.
Dependencies are inferred from the claim text.