US3872691A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotating metal shaft and plastic sleeve mounting
Assignee: Emerson Electric Co
•
Filing: 1973-03-29
•
Granted: 1975-03-25
•
Expires: 1993-03-29
Abstract
Abstract A rotatable metal shaft has a plastic sleeve mounted to it for operatively connecting additional apparatus to the shaft. The shaft has an annular groove formed in it and is provided with at least one spline spaced axially from the groove. The sleeve includes a body part having an axial opening through it for fitting the sleeve to the shaft. One end of the sleeve has a keyway extending radially outwardly of the axial opening while the other end of the sleeve is provided with at least one lug extending radially inwardly of the axial opening. The lug enters the annular groove in the shaft and the keyway receives the spline when the sleeve is placed in position on the shaft. The keyway can be close fitting circumferentially with the spline to provide a rigid mount or oversized circumferentially to provide a limited slip rotational mounting.
Inventors
- 👤 Eugene F Hildebrandt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:43
CPC Classifications
F; F16; F16D; F16D1/00; F16D1/06; F16D1/08; F16D1/0852; F16D1/0858
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
368 words
A two piece device intended for simultaneous rotation, comprising: a solid, metal shaft having an annular channel formed in it, a pair of protrusions formed from said metal shaft, said protrusions lying on diametrically opposite sides of said shaft and extending outwardly from an outer surface of said shaft, said protrusions being spaced from said channel, each of said protrusions including a pair of splines, each of said splines having an outboard face; and a plastic cylindrical sleeve mounted on said shaft, said sleeve having a first end, a second end, and an axial opening in said sleeve between said first and said second ends, said first end having clasp means integrally formed in it, said sleeve further having a first pair and a second pair of grooves through it on diametrically opposite sides of said sleeve along the first end of said sleeve, said groove pairs having a portion of the total surface area of the sleeve between respective pairs of said grooves, said clasp means including a lug extending radially inwardly of said axial opEning from each of said portions of said sleeve between respective ones of said groove pairs, the effective diameter of said axial opening being less than the outer diameter of said shaft along at least that portion of said sleeve having said clasp means formed in it, said lugs being engagable in said channel to position said sleeve axially with respect to said shaft, the engagement of said lugs and said channel providing a light frictional drag which is insufficient to prevent all rotational slippage of said sleeve on said shaft during rotation of said shaft in either clockwise or counterclockwise directions, said second end of said sleeve having a pair of keyways formed in it, said keyways extending radially outwardly from said axial opening, said keyways being oversized with respect to said protrusions such that said individual ones of said keyways engage respective ones of said protrusions in the mounted position of said sleeve, the outboard face of respective ones of the spline pairs forming said protrusions adapted to abut said keyways in two relative positions of said sleeve with respect to said shaft, thereby limiting rotational movement of said sleeve.
Claim 2
Dependent Claim
368 words
A two piece device intended for simultaneous rotation, comprising: a solid, metal shaft having an annular channel formed in it, a pair of protrusions formed from said metal shaft, said protrusions lying on diametrically opposite sides of said shaft and extending outwardly from an outer surface of said shaft, said protrusions being spaced from said channel, each of said protrusions including a pair of splines, each of said splines having an outboard face; and a plastic cylindrical sleeve mounted on said shaft, said sleeve having a first end, a second end, and an axial opening in said sleeve between said first and said second ends, said first end having clasp means integrally formed in it, said sleeve further having a first pair and a second pair of grooves through it on diametrically opposite sides of said sleeve along the first end of said sleeve, said groove pairs having a portion of the total surface area of the sleeve between respective pairs of said grooves, said clasp means including a lug extending radially inwardly of said axial opEning from each of said portions of said sleeve between respective ones of said groove pairs, the effective diameter of said axial opening being less than the outer diameter of said shaft along at least that portion of said sleeve having said clasp means formed in it, said lugs being engagable in said channel to position said sleeve axially with respect to said shaft, the engagement of said lugs and said channel providing a light frictional drag which is insufficient to prevent all rotational slippage of said sleeve on said shaft during rotation of said shaft in either clockwise or counterclockwise directions, said second end of said sleeve having a pair of keyways formed in it, said keyways extending radially outwardly from said axial opening, said keyways being oversized with respect to said protrusions such that said individual ones of said keyways engage respective ones of said protrusions in the mounted position of said sleeve, the outboard face of respective ones of the spline pairs forming said protrusions adapted to abut said keyways in two relative positions of said sleeve with respect to said shaft, thereby limiting rotational movement of said sleeve.
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) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |