US3679247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hub-to-shaft clamp connection assembly
Assignee: Individual
•
Filing: 1971-10-26
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Granted: 1972-07-25
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Expires: 1991-10-26
Abstract
Abstract To connect a hub to a shaft, spaced inner and outer rings have conical surfaces formed thereon, the conical surfaces diverging towards the outer sides of the connection. A pair of intermediate clamp rings which have essentially matching (but possibly slightly smaller conical angles) conical surfaces are inserted between the inner and outer rings, one from each side. Screws pass through one of the clamp rings and bear against its outer face, and are threaded into the other clamp ring, to tighten the rings against each other, the inner and outer rings being formed with a central recess of dove-tailed cross-section, in which a ring-shaped metal disc is inserted having an outer surface substantially matching the dove-tailed conical surfaces of the inner and outer rings. The clamp ring against which the screw surfaces bear is additionally formed with threaded openings to permit screws to be threaded therein, to then bear against the metal ring when separation of the hub to shaft connection is desired.
Inventors
- 👤 Oskar E Peter
- 👤 Lothar Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:54
CPC Classifications
F; F16; F16D; F16D1/00; F16D1/06; F16D1/08; F16D1/09; F16D1/093; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7047; Y10T403/7049
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
278 words
Hub-to-shaft clamPing connection assembly comprising an inner ring (1) adapted to seat on the shaft and having a pair of outwardly tapering conical surfaces (1b) and forming, with the center of the shaft, an angle up to about 6*; an outer ring (2) adapted to seat within the hub and having a pair of outwardly tapering conical surfaces (2b) spaced from the conical surfaces of the inner ring and forming with the center of the hub an angle of up to about 6*; a pair of intermediate clamp rings (4, 4a) each having conical surfaces concentric with the facing surfaces of the outer and inner ring, one each being insertable from a side of the connection to clamp the inner and outer rings against the shaft and hub, respectively, and the conical surfaces of the clamp rings against the conical surfaces of the inner and outer rings, respectively; screw means (6) passing through one of the clamp rings and bearing against the outer face thereof, and threaded into the other clamp ring to tighten the clamp rings against each other, the inner and outer rings, each, being formed essentially at the center of the connection assembly with dove-tail surfaces, to provide additional conical surfaces; a metal ring (3) having an outer surface substantially matching the additional conical surfaces, the metal ring (3) being formed with openings matching the locking screw means to fasten the clamp rings together; and wherein the clamp ring through which the screw means pass are additionally formed with threaded openings (5) to permit threading of the screws therein to bear against said metal ring and thus permit release of said clamp ring after tightening.
Claim 2
Dependent Claim
278 words
Hub-to-shaft clamPing connection assembly comprising an inner ring (1) adapted to seat on the shaft and having a pair of outwardly tapering conical surfaces (1b) and forming, with the center of the shaft, an angle up to about 6*; an outer ring (2) adapted to seat within the hub and having a pair of outwardly tapering conical surfaces (2b) spaced from the conical surfaces of the inner ring and forming with the center of the hub an angle of up to about 6*; a pair of intermediate clamp rings (4, 4a) each having conical surfaces concentric with the facing surfaces of the outer and inner ring, one each being insertable from a side of the connection to clamp the inner and outer rings against the shaft and hub, respectively, and the conical surfaces of the clamp rings against the conical surfaces of the inner and outer rings, respectively; screw means (6) passing through one of the clamp rings and bearing against the outer face thereof, and threaded into the other clamp ring to tighten the clamp rings against each other, the inner and outer rings, each, being formed essentially at the center of the connection assembly with dove-tail surfaces, to provide additional conical surfaces; a metal ring (3) having an outer surface substantially matching the additional conical surfaces, the metal ring (3) being formed with openings matching the locking screw means to fasten the clamp rings together; and wherein the clamp ring through which the screw means pass are additionally formed with threaded openings (5) to permit threading of the screws therein to bear against said metal ring and thus permit release of said clamp ring after tightening.
Claim 3
Dependent Claim
17 words
Assembly according to claim 1, wherein the screw means have a material strength of about 130 kp/mm2.
Claim 4
Dependent Claim
13 words
Assembly according to claim 1, wherein the screw means are recessed head screws.
Claim 5
Dependent Claim
51 words
Assembly according to claim 1, wherein the outer conical surface (9a) of the inner ring (9) has a lesser conical angle than the inner conical surface (10a) of the outer ring (10) to provide for play(x) between the respective surfaces of the clamp rings (12, 12a) before the assembly is tightened.
Claim 6
Dependent Claim
110 words
Assembly according to claim 1, wherein the outer conical surface (9a) of the inner ring (9) and the engaging conical surface of the clamp ring (12, 12a) have conical centers to provide for engagement first of the conical surface of the inner ring and then, upon axial movement of the clamp ring, of engagement of the conical surface on the clamp ring with the inwardly facing conical surface on the outer ring (10) to provide for first clamping pressure being exerted against the inner ring, and hence to seat the inner ring (9) on the shaft, before engagement of clamping pressure against the outer ring (10) seating against the hub.
Claim 7
Dependent Claim
77 words
Assembly according to claim 1, wherein (FIG. 4) the conical angle at opposite outer and inner conical surfaces (13a, 14a) on one side of the inner and outer rings (13, 14) respectively, are different from the conical angles of the outer and inner conical surfaces (13b, 14b) on the other side of the inner and outer rings, respectively; and the clamp rings have conical surfaces engaging the differently angled conical surfaces of the inner and outer rings.
Claim 8
Dependent Claim
47 words
Assembly according to claim 6, wherein the additional conical surfaces are recesses formed in the inner and outer rings, of dove-tail cross-section, said additional conical surface being non-symmetrical with respect to the axis of the connection assembly; and the metal ring (16) has substantially matching non-symmetrical surfaces.
Claim 9
Dependent Claim
82 words
Assembly according to claim 1, wherein the outer and inner rings and closed rings (18, 18a, 19, 19a) divided centrally into ring portions; and the metal ring (17) is formed of two parts with conical surfaces assembled together with said centrally separated rings, the end portions of the conical surfaces projecting over the central portions of the rings, the conical surfaces of the assembled metal ring holding the inner ring, the metal ring, and the outer ring together as a unitary assembly.
Claim 10
Dependent Claim
22 words
Assembly according to claim 8, wherein the two parts of the ring are identical as mirror images, the parts being secured together.
Claim 11
Dependent Claim
15 words
Assembly according to claim 1, wherein the inner and the outer ring are split rings.
Claim 12
Dependent Claim
47 words
Assembly according to claim 1, wherein the inner ring and the outer ring, each, are formed with a recess (1a, 2a), said recess being of dove-tailed cross-section and providing the additional conical surface, the metal ring being seated within said recess and having essentially matching conical surfaces.
References Cited (Backward Citations)
US525775A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |