Patent US3783705A successfully refreshed from Google Patents.
US3783705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
V-belt for a stepless variable asymmetric v-belt driving gear
Assignee: BECKER E AND A KG
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Filing: 1972-06-14
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Granted: 1974-01-08
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Expires: 1992-06-14
Abstract
Abstract It is the object of the invention to provide a V-belt in such a manner that at higher rate of power input the V-belt will have longer life-time. It was found that this object is met if the flank of the V-belt associated with the almost vertical side flank is inclined by at least 1* more than this side flank; and if the flank of the Vbelt associated with the inclined side flank is inclined by at least 1* less than this side flank.
Inventors
- 👤 F Moogk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:26
CPC Classifications
F; F16; F16G; F16G5/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
151 words
An asymmetric V-belt for an asymmetric pulley having a first belt-contacting flank defining a plane nearly normal to the axis of the pulley and a second belt-contacting flank defining a larger angle relative to a plane normal to the axis of the pulley than the first flank, said V-belt comprising: a first side flank for contacting the first flank of the pulley and a second side flank for contacting the second flank of the pulley, said first flank of the belt defining an angle at least one-half degree larger relative to a plane normal to the pulley axis than the first flank of the pulley and the second flank of the belt defining an angle at least one-half degree smaller relative to a plane normal to the pulley axis than the second flank of the pulley; and a top surface and a base surface joining said side flanks of the belt.
Claim 2
Dependent Claim
151 words
An asymmetric V-belt for an asymmetric pulley having a first belt-contacting flank defining a plane nearly normal to the axis of the pulley and a second belt-contacting flank defining a larger angle relative to a plane normal to the axis of the pulley than the first flank, said V-belt comprising: a first side flank for contacting the first flank of the pulley and a second side flank for contacting the second flank of the pulley, said first flank of the belt defining an angle at least one-half degree larger relative to a plane normal to the pulley axis than the first flank of the pulley and the second flank of the belt defining an angle at least one-half degree smaller relative to a plane normal to the pulley axis than the second flank of the pulley; and a top surface and a base surface joining said side flanks of the belt.
Claim 3
Dependent Claim
83 words
The V-belt according to claim 1 for a pulley having a first belt-contacting flank defining an angle of one to two degrees relative to a plane normal to the pulley axis, and wherein said first side flank of the belt defines an angle of about two to five degrees relative to a plane normal to the pulley axis and said second side flank of the belt defines an angle of twelve to twenty-seven degrees relative to a plane normal to the pulley axis.
Claim 4
Dependent Claim
56 words
The V-belt according to claim 2 wherein said second side flank of the belt and said top surface are joined by a chamfering means defining an angle relative to a plane which is normal to the axis of the pulley and intersects the junction between said chamfering means and said second side flank of the belt.
Claim 5
Dependent Claim
20 words
The V-belt according to claim 3 wherein said angle defined by the chamfering means is between ten to forty degrees.
Claim 6
Dependent Claim
22 words
The V-belt according to claim 3 wherein said chamfering means comprises a flat plate having a thickness of two to four millimeters.
References Cited (Backward Citations)
US3365967A
Cited
US3656359A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |