Band brake mechanism
AssigneeHumanscale Corporation
InventorVladimir Stanislavovich Chumakov
Life of this patent
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Abstract
A band brake suitable for use with height adjustable tables and configured to selectively grip and release a lift band utilized by the table's height adjusting mechanism to raise and lower the work surface. The band brake may include an eccentric roller configured to move between a band-engaged position and a band-disengaged position. A release lever is connected to the eccentric roller and configured to transition the eccentric roller between the band-engaged and the band-disengaged positions. A linkage system is connected between the brake housing and the release lever, whereby the linkage system counteracts torque created by a release spring operating on the release lever.
Claims20
A height adjustable table comprising:
- (a) a work surface;
- (b) adjustable legs supporting the work surface;
- (c) a lift mechanism, including at least one band, wherein the lift mechanism is configured to allow height adjustment of the adjustable legs;
- and
- (d) a band brake configured to selectively grip and release the band, the band brake comprising:
- i) a brake housing with the band extending therethrough;
- ii) an eccentric roller extending into the housing, the eccentric roller configured to move between a band-engaged positioned and a band-disengaged position;
- iii) a release lever connected to the eccentric roller and configured to transition the eccentric roller between the band-engaged and the band-disengaged positions;
- iv) a linkage system with a first link connected to the brake housing and a second link connected to the release lever;
- and
- v) a biasing device connected between the release lever and the linkage system.
A band brake configured to selectively grip and release a band, the band brake comprising:
- (a) a brake housing with a band channel extending therethrough;
- (b) an eccentric roller extending into the housing, the eccentric roller configured to move between a band-engaged positioned and a band-disengaged position;
- (c) a release lever connected to the eccentric roller and configured to transition the eccentric roller between the band-engaged and the band-disengaged positions;
- (d) a linkage system with a first link connected to the brake housing and a second link connected to the release lever;
- and
- (e) a biasing device connected between the release lever and the linkage system.
A band brake configured to selectively grip and release a band, the band brake comprising:
- (a) a brake housing with a band channel extending therethrough;
- (b) an eccentric roller extending into the housing, the eccentric roller configured to move between a band-engaged positioned and a band-disengaged position, wherein the eccentric roller is configured to apply force to a first side of the band in the band-engaged position;
- (c) and at least one brake roller configured to apply force to a second side of the band, the brake roller engaging an inclined clutch plate such that movement of the brake roller in a first direction increases engagement of the brake roller with the band, and movement of the brake roller in an opposite direction decreases engagement of the brake roller with the band;
- and
- (d) a release lever connected to the eccentric roller and configured to transition the eccentric roller between the band-engaged and the band-disengaged positions.
Dependencies are inferred from the claim text.