US3986409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Push-to-engage device
Assignee: Raytheon Co
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Filing: 1975-07-07
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Granted: 1976-10-19
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Expires: 1995-07-07
Abstract
Abstract A push-to-engage device comprising a hollow knob having axially disposed therein an independent bushing provided with a fastener for bindingly engaging an inserted end portion of a rotatable shaft and with a plurality of recesses disposed for engagement with keys protruding inwardly from the knob, and an external resilient device coupled to the knob for positioning the keys in spaced relationship with the recesses in the bushing.
Inventors
- 👤 William V. Tripp
- 👤 Robert H. Broadbent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:11
CPC Classifications
G; G05; G05G; G05G1/00; G05G1/08; G05G1/082; G05G1/02; G05G1/10; G05G1/12; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20732; Y10T74/20762; Y10T74/20834; Y10T74/2084; Y10T74/20846
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
112 words
A control knob assembly for rotatably engaging an adjustment shaft and comprising: a hollow body including a cup-shaped housing and a retaining washer fitted into the open end thereof, the washer having centrally disposed aperture means for permitting insertion of the shaft axially into the housing and the housing having first interlocking means for rotating the shaft; an independent coupler device disposed within the body, the coupler having fastening means for bindingly engaging the shaft and second interlocking means for releasable engagement with the first interlocking means; and resilient means external of the body and coupled thereto for resiliently positioning the first interlocking means in spaced relationship with the second interlocking means.
Claim 2
Dependent Claim
112 words
A control knob assembly for rotatably engaging an adjustment shaft and comprising: a hollow body including a cup-shaped housing and a retaining washer fitted into the open end thereof, the washer having centrally disposed aperture means for permitting insertion of the shaft axially into the housing and the housing having first interlocking means for rotating the shaft; an independent coupler device disposed within the body, the coupler having fastening means for bindingly engaging the shaft and second interlocking means for releasable engagement with the first interlocking means; and resilient means external of the body and coupled thereto for resiliently positioning the first interlocking means in spaced relationship with the second interlocking means.
Claim 3
Dependent Claim
34 words
A control knob assembly as set forth in claim 1 wherein the coupler device comprises a bushing axially disposed within the cup-shaped housing and having an axial bore into which the shaft is inserted.
Claim 4
Dependent Claim
50 words
A control knob assembly as set forth in claim 2 wherein the first interlocking means comprises a key fixedly attached to the closed end of the housing, and the second interlocking means comprises conformingly-shaped recess means disposed in the adjacent surface of the bushing for pressure engagement with the key.
Claim 5
Dependent Claim
39 words
A control knob assembly as set forth in claim 3 wherein the resilient means comprises a coil spring axially aligned with the aperature means of the washer and having one end coupled to the exterior surface of the washer.
Claim 6
Dependent Claim
97 words
In combination: a rotatable shaft having a distal end portion; rotation resisting means coupled to the shaft for applying a frictional drag thereto; knob means mounted on the distal end portion of the shaft, the knob means including coupling means for rotatably engaging the shaft in a releasable manner and including a hollow body having therein a protrusion fixedly attached to the body; and resilient means mounted on an intermediate portion of the shaft between the rotation resisting means and the knob means for maintaining the knob means in a released condition with respect to the shaft.
Claim 7
Dependent Claim
97 words
In combination: a rotatable shaft having a distal end portion; rotation resisting means coupled to the shaft for applying a frictional drag thereto; knob means mounted on the distal end portion of the shaft, the knob means including coupling means for rotatably engaging the shaft in a releasable manner and including a hollow body having therein a protrusion fixedly attached to the body; and resilient means mounted on an intermediate portion of the shaft between the rotation resisting means and the knob means for maintaining the knob means in a released condition with respect to the shaft.
Claim 8
Dependent Claim
48 words
The combination as set forth in claim 5 wherein the coupling means includes a coupler device independent of the body and disposed therein, the device having fastening means for bindingly securing the device to the shaft and having interlocking means disposed adjacent the protrusion for pressure engagement therewith.
Claim 9
Dependent Claim
28 words
The combination as set forth in claim 6 wherein the resilient means includes a coil spring disposed axially in encircling relationship with said intermediate portion of the shaft.
Claim 10
Dependent Claim
21 words
The combination as set forth in claim 5 wherein one end of the coil spring is coupled directly to the body.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-19 | 1980-04-19 | 1980-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-19 | 1984-04-19 | 1984-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-19 | 1988-04-19 | 1988-10-19 | $7700.00 | Window Closed / Lapsed |