US3734548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaft connection mechanism
Assignee: K Tel International Inc
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Filing: 1971-12-20
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Granted: 1973-05-22
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Expires: 1991-12-20
Abstract
Abstract Shaft connection mechanism for drivingly securing a device to a shaft in an appliance. The shaft is provided with a recessed portion adjacent an end. The end of the shaft has a non-circular configuration and the device has a non-circular opening adapted to pass over the shaft end and be retained in the recessed portion upon relative rotation between the device and the shaft. Camming means are provided in the recessed portion for drivingly engaging the device and the shaft upon relative rotation in one direction, and for effecting ready release of the device from the shaft upon rotation in an opposite direction. In a modification, the device may be non-rotatably mounted on the shaft and retained in place by a lock member having a non-circular opening adapted to passover the shaft end and be retained in a recessed portion provided with camming means.
Inventors
- 👤 G Kieves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:16
CPC Classifications
F; F16; F16D; F16D1/00; F16D1/06; B; B26; B26D; B26D7/00; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7098
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
148 words
Connection mechanism for drivingly securing a device to a shaft, said shaft having a recessed portion adjacent an end, the shaft end having a non-circular configuration greater in extent than the recessed portion, locking means associated with said device for securing the same to said shaft, the locking means having an opening triangular in cross-section adapted to pass over the shaft end that is generally triangular in cross-section but somewhat smaller than the opening in the locking means and be retained in the recessed portion upon relative rotation between the locking means and shaft, the recessed portion having linear camming surfaces adapted to engage with the linear wall portions defining the triangular opening in the locking means to detachably hold the device on the shaft, the device and shaft being drivingly engaged upon relative rotation in one direction and being released upon relative rotation in the opposite direction.
Claim 2
Dependent Claim
148 words
Connection mechanism for drivingly securing a device to a shaft, said shaft having a recessed portion adjacent an end, the shaft end having a non-circular configuration greater in extent than the recessed portion, locking means associated with said device for securing the same to said shaft, the locking means having an opening triangular in cross-section adapted to pass over the shaft end that is generally triangular in cross-section but somewhat smaller than the opening in the locking means and be retained in the recessed portion upon relative rotation between the locking means and shaft, the recessed portion having linear camming surfaces adapted to engage with the linear wall portions defining the triangular opening in the locking means to detachably hold the device on the shaft, the device and shaft being drivingly engaged upon relative rotation in one direction and being released upon relative rotation in the opposite direction.
Claim 3
Dependent Claim
16 words
Connection mechanism as in claim 12 wherein the linear camming surfaces are generally hexagonal in cross-section.
Claim 4
Dependent Claim
13 words
Connection mechanism as in claim 1 wherein the device comprises a cutting blade.
Claim 5
Dependent Claim
12 words
Connection mechanism as in claim 1 wherein the device comprises a handle.
Claim 6
Dependent Claim
71 words
Connection mechanism as in claim 1 wherein the locking means is integral with the device and the camming surfaces of the recessed portion are comprised of angulated linear portions offset from the sides of the triangular shaft end whereby upon positioning of the device over the recessed portion and rotation of the device and shaft relative to one another, the linear portions will be cammed into driving engagement with the device.
Claim 7
Dependent Claim
37 words
Connection mechanism as in claim 1 wherein the front of the shaft end is comprised of generally planar intersecting surfaces which extend rearwardly from the intersection lines to provide shedding surfaces that resist adherence of material thereto.
Claim 8
Dependent Claim
42 words
Connection mechanism as in claim 1 wherein the device and locking means are separate members, the device being non-rotatably disposed on the shaft and the locking means having a knurled surface to facilitate handling thereof to secure the device on the shaft.
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) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |