Patent US3912412A successfully refreshed from Google Patents.
US3912412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaft locking device
Assignee: Emerson Electric Co
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Filing: 1974-11-22
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Granted: 1975-10-14
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Expires: 1994-11-22
Abstract
Abstract A relatively compact structure for locking power transmission parts, such as bearings, pulley, gears, sprockets and the like to shafts which comprises an axially extending cylindrical portion of the part having an inside truncated conical surface surrounding the shaft, and a split sleeve having an exterior surface complementary to the inside surface and a bore for the shaft whereby a wedging action caused by axially moving the sleeve with respect to the part, the part is locked to the shaft.
Inventors
- 👤 Hilarius S Struttmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:50
CPC Classifications
F; F16; F16D; F16D1/00; F16D1/06; F16D1/08; F16D1/09; F16D1/093; F16D1/095; F16D1/096; F16C; F16C35/00; F16C35/04; F16C35/06; F16C35/07; F16C35/073; F16C19/00; F16C19/02; F16C19/04; F16C19/06; F16C2226/00; F16C2226/10; F16C2226/16; F16C23/00; F16C23/06; F16C23/08; F16C23/082; F16C23/084; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7047; Y10T403/7051; Y10T403/7052
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
202 words
A bearing having an inner race adapted to be locked to a shaft for rotation with the shaft comprising: a member having a cylindrical inner race portion with a bore having an inside diameter to receive the shaft; at least one portion extending axially outwardly from said race portion with an interior truncated conical surface diverging with respect to the axis of the race portion; an axially split sleeve member receivable in said axially extending portion having an inner diameter to receive said shaft and adapted to be collapsed to wedge with said shaft; said sleeve member having an exterior truncated conical surface complementary to the conical surface of said axially extending portion; said conical surfaces having an angle with respect to the longitudinal axis of said shaft no greater than an angle whose tangent equals the coefficient of friction between the conical surfaces; said sleeve member being movable axially with respect to said race portion to lock said surfaces with respect to one another, thus locking said cylindrical member and said sleeve member together, said sleeve member being collapsed to wedge with said shaft and thus locking said cylindrical member with said shaft for concurrent rotation therewith about a common axis.
Claim 2
Dependent Claim
202 words
A bearing having an inner race adapted to be locked to a shaft for rotation with the shaft comprising: a member having a cylindrical inner race portion with a bore having an inside diameter to receive the shaft; at least one portion extending axially outwardly from said race portion with an interior truncated conical surface diverging with respect to the axis of the race portion; an axially split sleeve member receivable in said axially extending portion having an inner diameter to receive said shaft and adapted to be collapsed to wedge with said shaft; said sleeve member having an exterior truncated conical surface complementary to the conical surface of said axially extending portion; said conical surfaces having an angle with respect to the longitudinal axis of said shaft no greater than an angle whose tangent equals the coefficient of friction between the conical surfaces; said sleeve member being movable axially with respect to said race portion to lock said surfaces with respect to one another, thus locking said cylindrical member and said sleeve member together, said sleeve member being collapsed to wedge with said shaft and thus locking said cylindrical member with said shaft for concurrent rotation therewith about a common axis.
Claim 3
Dependent Claim
32 words
A bearing as in claim 1 wherein said conical surface of said axially extending portion diverges inwardly in the direction of said inner race portion and with respect to the axis thereof.
Claim 4
Dependent Claim
56 words
A bearing as recited in claim 2 further including an enlarged terminal end on said sleeve member which forms a groove with the terminal end of said axially extending portion, and a split snap ring in said groove retaining said sleeve member in wedged and locked position with respect to said cylindrical member and said shaft.
Claim 5
Dependent Claim
19 words
A bearing as recited in claim 1 in which said angle of said surfaces in approximately 2* to 10*.
Claim 6
Dependent Claim
186 words
A shaft locking device comprising: a member having a first cylindrical portion with a bore having an inside diameter to receive the shaft; at least one portion extending axially from said cylindrical portion with an interior truncated conical surface diverging with respect to the axis of the first portion; an axially split sleeve member receivable in said axially extending portion having an inner diameter to receive said shaft and adapted to be collapsed to wedge with said shaft; said sleeve member having an exterior truncated conical surface complemeNtary to the conical surface of said axially extending portion; said conical surfaces having an angle with respect to the longitudinal axis of said shaft no greater than an angle whose tangent equals the coefficient of friction between the conical surfaces; said sleeve member being movable axially with respect to said first portion to lock said surfaces with respect to one another, thus locking said cylindrical member and said sleeve member together, said sleeve member being collapsed to wedge with said shaft and thus locking said cylindrical member with said shaft for concurrent rotation therewith about a common axis.
Claim 7
Dependent Claim
186 words
A shaft locking device comprising: a member having a first cylindrical portion with a bore having an inside diameter to receive the shaft; at least one portion extending axially from said cylindrical portion with an interior truncated conical surface diverging with respect to the axis of the first portion; an axially split sleeve member receivable in said axially extending portion having an inner diameter to receive said shaft and adapted to be collapsed to wedge with said shaft; said sleeve member having an exterior truncated conical surface complemeNtary to the conical surface of said axially extending portion; said conical surfaces having an angle with respect to the longitudinal axis of said shaft no greater than an angle whose tangent equals the coefficient of friction between the conical surfaces; said sleeve member being movable axially with respect to said first portion to lock said surfaces with respect to one another, thus locking said cylindrical member and said sleeve member together, said sleeve member being collapsed to wedge with said shaft and thus locking said cylindrical member with said shaft for concurrent rotation therewith about a common axis.
Claim 8
Dependent Claim
33 words
A shaft locking device as in claim 5 wherein said conical surface of said axially extending portion diverges inwardly in the direction of said cylindrical portion and with respect to the axis thereof.
Claim 9
Dependent Claim
58 words
A shaft locking device as recited in claim 6 further including an enlarged terminal end on said sleeve member which forms a groove with the terminal end of said axially extending portion and a split snap ring in said groove retaining said sleeve member in wedged and locked position with respect to said cylindrical member and said shaft.
Claim 10
Dependent Claim
21 words
A shaft locking device as recited in claim 5 in which said angle of said surfaces is approximately 2* to 10*.
Claim 11
Dependent Claim
204 words
A transmission part such as pulley, gear and the like adapted to be locked to a shaft for rotation with the shaft comprising: a hub having a first cylindrical portion having a bore with an inside diameter to receive the shaft; at least one portion extending axially from said first portion with an interior truncated conical surface diverging with respect to the axis of the first portion; an axially split sleeve member receivable in said axially extending portion having an inner diameter to receive said shaft and adapted to be collapsed to wedge with said shaft; said sleeve member having an exterior truncated conical surfaces complementary to the conical surface of said axially extending portion; said conical surfaces having an angle with respect to the longitudinal axis of said shaft no greater than an angle whose tangent equals the coefficient of friction between the conical surfaces; said sleeve member being movable axially with respect to said first portion to lock said surfaces with respect to one another, thus locking said cylindrical hub and said sleeve member together, said sleeve member being collapsed to wedge with said shaft and thus locking said cylindrical hub with said shaft for concurrent rotation therewith about a common axis.
Claim 12
Dependent Claim
204 words
A transmission part such as pulley, gear and the like adapted to be locked to a shaft for rotation with the shaft comprising: a hub having a first cylindrical portion having a bore with an inside diameter to receive the shaft; at least one portion extending axially from said first portion with an interior truncated conical surface diverging with respect to the axis of the first portion; an axially split sleeve member receivable in said axially extending portion having an inner diameter to receive said shaft and adapted to be collapsed to wedge with said shaft; said sleeve member having an exterior truncated conical surfaces complementary to the conical surface of said axially extending portion; said conical surfaces having an angle with respect to the longitudinal axis of said shaft no greater than an angle whose tangent equals the coefficient of friction between the conical surfaces; said sleeve member being movable axially with respect to said first portion to lock said surfaces with respect to one another, thus locking said cylindrical hub and said sleeve member together, said sleeve member being collapsed to wedge with said shaft and thus locking said cylindrical hub with said shaft for concurrent rotation therewith about a common axis.
Claim 13
Dependent Claim
32 words
A transmission part as in claim 9 wherein said conical surface of said axially extending portion diverges inwardly in the direction of said cylindrical portion and with respect to the axis thereof.
Claim 14
Dependent Claim
57 words
A transmission part as recited in claim 10 further including an enlarged terminal end on said sleeve member which forms a groove with the terminal end of said axially extending portion and a split snap ring in said groove retaining said sleeve member in wedged and locked position with respect to said cylindrical member and said shaft.
Claim 15
Dependent Claim
20 words
A transmission part as recited in claim 9 in which said angle of said surfaces is approximately 2* to 10*.
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) | 1978-10-13 | 1979-04-14 | 1979-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-13 | 1983-04-14 | 1983-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-13 | 1987-04-14 | 1987-10-14 | $7700.00 | Window Closed / Lapsed |