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AssigneeHoneywell International Inc.
InventorJoseph J. Pajot
Estimating the term…
A brake adjustment mechanism maintains a brake actuating piston (17) stroke within a preferred range compensating for brake wear by repositioning the piston along a deformable adjustment tube (33). The tube is deformed when excessive piston travel draws the tube along a tube expanding member (51). Adjustment mechanism stresses are minimized by insuring the annular regions of contact between the outer surface (59) of the expanding member (51) and the tube (33) as well as between the inner surface (57) of the expanding member (51) and an expanding member retaining groove (55) in a cantilevered pin (49) are smooth lacking both sharp corners and flat regions. The expanding member (typically a split ring) engaging the deformable tube along an annular surface (59) of the tube and also engages the annular groove along an annular surface (55) of the pin groove. Normals (63) to the deformable tube surface are more nearly orthogonal to the pin axis (43) than normals (61) to the pin groove annular surface.
A brake piston adjuster assembly comprising a housing having therein a cylindrical bore, a relatively fixed anchor location within the housing, a piston disposed slidably in the cylindrical bore to be extendable therefrom in response to the application of hydraulic pressure to one end thereof, a helical piston return spring disposed within the piston and having one end engaging the piston and another end engaging the relatively fixed anchor location within the housing, the spring adapted to compress as the piston is extended from the housing and to urge the piston further into the housing upon the reduction of hydraulic pressure on the piston one end, and means including a cantilevered adjuster pin extending coaxial with the cylindrical bore and having an annular groove receiving an annular expander near a free end thereof for modifying the anchor location to a new relatively fixed location within the housing in response to piston translation exceeding a predetermined distance thereby changing the location to which the spring returns the piston, the region of contact between the pin groove and annular expander comprising a surface of revolution which, in cross section, generally comprises a continuous curve having a continuous first derivative.
A piston adjuster mechanism comprising a deformable member disposed within and connected with a piston, a deforming member received within and engaging the deformable member, the deforming member comprising an elongated generally cylindrical cantilevered pin having an annular groove near the free end thereof, and an annular expander ring received within the annular groove and comprising a substantially identical pair of ring halves which, when joined, provide a smooth annular outer surface for engaging the deformable member in a first annular region, and a smooth annular inner surface for engaging the groove in a second annular region, at least one said ring surface having, in cross section, a finite radius of curvature throughout the corresponding region of contact.
A piston adjuster mechanism comprising a deformable member disposed within and connected with a piston, a deforming member received within and engaging the deformable member, the deforming member comprising an elongated generally cylindrical cantilevered pin having an annular groove near the free end thereof, and an annular expander ring received within the annular groove, a portion of the annular groove which receives the expander ring formed, in cross section, as a generally continuous curve having a continuous first derivative.
A piston adjuster mechanism comprising a deformable member disposed within and connected with a piston, a deforming member received within and engaging the deformable member, the deforming member comprising an axially extending generally cylindrical cantilevered pin having an annular groove near the free end thereof, and an annular expander ring comprising a pair of similar ring halves received within the annular groove, the expander ring engaging the deformable member along an annular surface of the deformable member and the expander ring engaging the annular groove along an annular surface of the pin groove, normals to the deformable member surface being more nearly orthogonal to the pin axis than normals to the pin annular surface.
Dependencies are inferred from the claim text.