US4214459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torque transmission clutch
Assignee: Individual
•
Filing: 1978-08-23
•
Granted: 1980-07-29
•
Expires: 1998-08-23
Abstract
Abstract A torque transmission clutch which disengages automatically on increase of torque beyond a particular value comprises a pair of like discs mounted to rotate with a drive shaft and a driven shaft respectively, each disc having through-extending apertures accommodating a ring of balls. The balls are all the same size and the number of balls in each ring is the same. The disc thickness is equal to the ball radius and the discs are held axially in a sleeve with a spacing equal to the ball radius. One ring of balls abuts a thrust disc located axially on one shaft and the other ring of balls is pressed by a spring-loaded thrust disc to interengage with the balls of the one ring in the space between the ball-retaining discs. On occurrence of excessive torque, the spring-loaded ring of balls is deflected axially and rides over the balls bearing against the axially-located ring.
Inventors
- 👤 Kajetan Leitner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:07
CPC Classifications
F; F16; F16D; F16D7/00; F16D7/04; F16D7/06; F16D7/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
183 words
A torque transmission clutch comprising coaxial driving and driven shafts which are located axially and which are generally hollow, two rings of equal-sized balls, each ring of balls containing the same number of balls and being held in apertures in a respective ball-retaining disc having a thickness equal to the ball radius, the discs being alike, a sleeve in which the discs are maintained apart by spacer means a distance equal to the ball radius, one of said discs being mounted on the drive shaft to rotate with it and the other of said discs being mounted on the driven shaft to rotate with it, one ring of balls being located axially by a first thrust disc to project from the disc by a distance equal to the ball radius towards the other disc, the other ring of balls being spring urged through a second thrust disc to project from its respective disc to interengage between the balls of the said one ring and, an aligning member extending co-axially into said driving and driven shafts and being secured to one of said shafts.
Claim 2
Dependent Claim
183 words
A torque transmission clutch comprising coaxial driving and driven shafts which are located axially and which are generally hollow, two rings of equal-sized balls, each ring of balls containing the same number of balls and being held in apertures in a respective ball-retaining disc having a thickness equal to the ball radius, the discs being alike, a sleeve in which the discs are maintained apart by spacer means a distance equal to the ball radius, one of said discs being mounted on the drive shaft to rotate with it and the other of said discs being mounted on the driven shaft to rotate with it, one ring of balls being located axially by a first thrust disc to project from the disc by a distance equal to the ball radius towards the other disc, the other ring of balls being spring urged through a second thrust disc to project from its respective disc to interengage between the balls of the said one ring and, an aligning member extending co-axially into said driving and driven shafts and being secured to one of said shafts.
Claim 3
Dependent Claim
36 words
A torque transmission clutch according to claim 1, wherein said shafts have zones of polygonal cross-section and wherein the apertures for receiving the balls is formed as lobes of the central polygonal aperture extending outwards therefrom.
Claim 4
Dependent Claim
19 words
A torque transmission clutch according to claim 1, the shafts being formed from stock material having the polygonal cross-section.
Claim 5
Dependent Claim
36 words
A torque transmission clutch according to claim 2, wherein the number of balls in a ring equals the number of surfaces of the polygonal zone of the respective shaft and the balls lie on these surfaces.
Claim 6
Dependent Claim
24 words
A torque transmission clutch according to claim 1 or 2 comprising a thrust bearing locating the other shaft with respect to the aligning member.
Claim 7
Dependent Claim
31 words
A torque transmission clutch according to claim 5, wherein the aligning member is secured to the driven shaft and is located with respect to the drive shaft by the thrust bearing.
Claim 8
Dependent Claim
53 words
A torque transmission clutch according to claim 1, 2 or 6, the sleeve having an inwardly-directed flange overlapping the first thrust disc to locate it axially, and there being a spring-ring mounted in the sleeve to overlap and retain in the sleeve the disc assembly including said discs and the spacer means therebetween.
References Cited (Backward Citations)
SU292037A1
Cited
SU211236A1
Cited
SU280129A1
Cited
US1840682A
Cited
DE740397C
Cited
US2969133A
Cited
US2974535A
Cited
US3137187A
Cited
US3693381A
Cited
DE2248421A1
Cited
SU386176A1
Cited
SU450042A1
Cited
DE2720549A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-07-29 | 1984-01-28 | 1984-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-29 | 1988-01-28 | 1988-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-29 | 1992-01-28 | 1992-07-29 | $7700.00 | Window Closed / Lapsed |