US3905209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compression hub apparatus for mounting a cylindrical body to a rotatable shaft
Assignee: DYNALOC CORP
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Filing: 1974-03-14
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Granted: 1975-09-16
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Expires: 1994-03-14
Abstract
Abstract Compression hub apparatus for coaxially mounting a cylindrical body to a rotatable shaft and comprising a hub structure having an end wall with a central aperture for receiving the shaft and a cylindrical side wall defining a cylindrical recess therewithin, fasteners for securing the hub to the body, a deformable locking assembly including a plurality of deformable annular dish-shaped disks disposed within the recess and about the shaft, and a cover plate for mating with the hub. As the cover plate is drawn into mating engagement with the hub it applies an axially directed force upon the disks causing them to deform in such a manner that their inner periphery lockingly engages the shaft and their outer periphery lockingly engages the side wall thereby locking the body to the shaft. In an alternative embodiment, the locking assembly comprises a coiled continuous length of material having a transverse cross section resembling a skewed parallelogram, the length of material being helically wound such that the surface corresponding to one short side of the parallelogram forms the shaft engaging inner periphery and the surface corresponding to the opposite short side of the parallelogram forms the hub side wall engaging outer periphery.
Inventors
- 👤 Rene A Conrad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:35
CPC Classifications
F; F16; F16D; F16D1/00; F16D1/06; F16D1/08; F16D1/0829; F16D1/0841
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
341 words
In a conveyor pulley structure including a cylindrical pulley having axially apertured end walls, a round shaft extending through the pulley along its axis, and hub means for affixing each end of the pulley to the shaft, an improved hub means comprising: an elongated cylindrical hub body having an annular flange at one end for abutting the pulley end walls, a first axial bore of a first diameter slightly larger than the diameter of the shaft and extending axially from the opposite end of said hub body toward said one end of said hub body, and a second axial bore of a second diameter larger than said first diameter and extending axially from said one end toward said opposite end and intersecting said first bore at a point along the axial length of said hub body such that when said hub body is disposed on said axle, said second bore and said axle form an annular recess of a predetermined axial length; deformable locking means disposed within said recess and including a continuous length of material having a transverse cross section generally resembling a skewed, elongated parallelogram with a pair of opposite, relatively short sides and a pair of opposite, relatively long sides, said length of material being helically wound about the shaft to form a coil wherein the coil surface corresponding to one of said short sides forms an inner periphery of the locking means for engaging the shaft, and wherein the coil surface corresponding to the other of said short sides forms an outer periphery of said locking means for engaging the cylindrical inner surface of said second bore; cover means for mating with said hub body and for applying an axially directed force upon said coil causing the windings of said coil to deform in such a manner that said inner periphery frictionally engages said shaft and said outer periphery frictionally engages said cylindrical inner surface thereby locking said hub body to said shaft; and means for securing said flange and said cover means to the end wall.
Claim 2
Dependent Claim
341 words
In a conveyor pulley structure including a cylindrical pulley having axially apertured end walls, a round shaft extending through the pulley along its axis, and hub means for affixing each end of the pulley to the shaft, an improved hub means comprising: an elongated cylindrical hub body having an annular flange at one end for abutting the pulley end walls, a first axial bore of a first diameter slightly larger than the diameter of the shaft and extending axially from the opposite end of said hub body toward said one end of said hub body, and a second axial bore of a second diameter larger than said first diameter and extending axially from said one end toward said opposite end and intersecting said first bore at a point along the axial length of said hub body such that when said hub body is disposed on said axle, said second bore and said axle form an annular recess of a predetermined axial length; deformable locking means disposed within said recess and including a continuous length of material having a transverse cross section generally resembling a skewed, elongated parallelogram with a pair of opposite, relatively short sides and a pair of opposite, relatively long sides, said length of material being helically wound about the shaft to form a coil wherein the coil surface corresponding to one of said short sides forms an inner periphery of the locking means for engaging the shaft, and wherein the coil surface corresponding to the other of said short sides forms an outer periphery of said locking means for engaging the cylindrical inner surface of said second bore; cover means for mating with said hub body and for applying an axially directed force upon said coil causing the windings of said coil to deform in such a manner that said inner periphery frictionally engages said shaft and said outer periphery frictionally engages said cylindrical inner surface thereby locking said hub body to said shaft; and means for securing said flange and said cover means to the end wall.
Claim 3
Dependent Claim
64 words
In a conveyor pulley structure as recited in claim 1 wherein one of said long sides includes a ridge extending along the length of said length of material which protrudes outwardly therefrom to abut adjacent coil windings and provide a pivot ridge which allows a wedging action to occur in the respective coil windings as said axially directed force is applied to said coil.
Claim 4
Dependent Claim
36 words
In a conveyor pulley structure as recited in claim 1 wherein the surfaces forming said short sides are serrated to increase the frictional engagement of said locking means to said shaft and said cylindrical inner surface.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |