A mechanism to prevent an adjustment knob associated with a piece of equipment (e.g. musical instrument or amplifier) from being moved accidentally includes an inner hub held in place on an adjustable shaft. An knob body fits concentrically over the inner hub, and is biased into position over the hu
A mechanism to prevent an adjustment knob associated with a piece of equipment (e.g. musical instrument or amplifier) from being moved accidentally includes an inner hub held in place on an adjustable shaft. An knob body fits concentrically over the inner hub, and is biased into position over the hub. The bottom of the knob body has locking structure which lockingly but releasingly cooperates with locking structure associated with the piece of equipment to which the shaft is affixed. A biasing structure such as a spring retains the knob body in a first, locked, position, in which the knob body is prevented from rotating, which in turn prevents rotation of the adjustable shaft. However, when the knob body is pulled away from the locking structure against the spring force, the knob body can be rotated, which in turn rotates the hub and shaft shaft. Releasing the knob body allows the biasing structure to urge the knob body back into engagement with the locking structure.
대표청구항▼
1. A locking knob for use with a control device having an angularly adjustable shaft, the control device being connected to an object, comprising: an inner hub defining an inner journal which is adapted to receive the shaft, said inner hub defining an inner radial bore;an outer knob body concentrica
1. A locking knob for use with a control device having an angularly adjustable shaft, the control device being connected to an object, comprising: an inner hub defining an inner journal which is adapted to receive the shaft, said inner hub defining an inner radial bore;an outer knob body concentrically disposed about at least a portion of the hub, the knob body defining an inner axial bore, an elongated radial slot and an open top, said inner radial bore of the hub being at least partially in registry with the radial slot of the knob body;a set screw which releasably fastens the hub to the shaft, said set screw threadingly engaged in the inner radial bore and also extending non-threadingly into the radial slot and engaging one or more sidewalls of said slot when said knob body is rotated, to cause the inner hub to move in synchrony with the knob body in response to angular movement of the knob body;the bore defined by the knob body at least partially defining an upwardly facing annular shoulder;the hub comprised of an integrally formed T-shaped upper section in substantial registry with the open top of the knob body, the T-shaped upper section defining a downwardly facing annular shoulder at least a portion of which is disposed in opposed relationship to the upwardly facing annular shoulder of the knob body;the knob body configured to move relative to the hub between a first, locked, position and a second, unlocked, position when the set screw is threadingly engaged in the inner radial bore to fasten the hub to the shaft and extended into the radial slot; anda biasing member compressively disposed between the annular shoulder of the knob body and the downward facing shoulder of the hub to bias the knob body into the locked position. 2. The dial of claim 1, wherein an upper section of the hub is threadingly connected to a lower section of the hub. 3. The locking knob of claim 1, further comprising: a first plurality of locking teeth attached to a lower end of the knob body;a second plurality of locking teeth attached to the object, the second plurality of locking teeth adapted to engage the first plurality of locking teeth in releasable locking engagement when the knob body is positioned in the first, locked, position. 4. The dial of claim 1, wherein the T-shaped upper section of the hub is threadingly connected to a lower section of the hub. 5. The locking knob of claim 1, wherein at least a portion of an outer surface of the hub is of polygonal cross-section, while the bore defined by the knob body has a corresponding polygonal cross-sectional configuration. 6. The locking knob of claim 5, wherein the cross-section of the outer surface of the hub is square, and the cross-sectional configuration of the bore defined by the knob body is square. 7. A locking knob for use with a control device having an angularly adjustable shaft, the control device being connected to an object, comprising: an inner hub defining an inner journal which is adapted to receive the shaft, said inner hub defining an inner radial bore;an outer knob body concentrically disposed about at least a portion of the hub, the knob body defining an inner axial bore, an elongated radial slot and an open top, said inner radial bore of the hub being at least partially in registry with the radial slot of the knob body;a set screw which releasably fastens the hub to the shaft, at least a portion of the set screw being in substantial registry with the radial slot, said set screw extending non-threadingly into the radial slot and engaging one or more sidewalls of said slot when said knob body is rotated, to cause the inner hub to move in synchrony with the knob body in response to angular movement of the knob body;the bore defined by the knob body at least partially defining an upwardly facing annular shoulder;the hub comprised of an integrally formed T-shaped upper section in substantial registry with the open top of the knob body, the T-shaped upper section defining a downwardly facing annular shoulder at least a portion of which is disposed in opposed relationship to the upwardly facing annular shoulder of the knob body;the knob body axially configured to move relative to the hub between a first, locked, position, and a second, adjustment, position when the set screw is threadingly engaged in the inner radial bore to fasten the hub to the shaft and extended into the radial slot; anda biasing member compressively disposed between the annular shoulder of the knob body and the downward facing shoulder of the hub to bias the knob body into the locked position. 8. The locking knob of claim 7, further comprising: a first plurality of locking teeth attached to a lower end of the knob body;a second plurality of locking teeth attached to the object, the second plurality of locking teeth adapted to engage the first plurality of locking teeth in releasable locking engagement when the knob body is positioned in the first, locked, position. 9. The locking knob of claim 7, wherein at least a portion of an outer surface of the hub is of polygonal cross-section, while the bore defined by the knob body has a corresponding polygonal cross-sectional configuration. 10. The locking knob of claim 7, wherein the cross-section of the outer surface of the hub is square, and the cross-sectional configuration of the bore defined by the knob body is square.
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이 특허에 인용된 특허 (31)
Swiderski Felix J. (Louisville KY) Buxton ; Jr. James A. (Louisville KY), Adapter between knob and shaft.
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