US3759065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Keyed joint
Assignee: NAT WESTMINSTER BANK Ltd
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Filing: 1971-05-07
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Granted: 1973-09-18
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Expires: 1991-05-07
Abstract
Abstract A keyed joint for enabling relative longitudinal movement to take place between a driving and a driven member under high torque loading conditions includes a shaft member and a coaxial sleeve member. A key is formed on one of the members and a keyway on the other member, the key and keyway each having a face transverse to the circumferential direction and spaced apart circumferentially. A plurality of rollers are located between said faces and the faces are profiled to correspond to the contacting surface of the rollers.
Inventors
- 👤 H Montefiore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:59
CPC Classifications
F; F16; F16D; F16D3/00; F16D3/02; F16D3/06; F16D3/065
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
151 words
In a keyed joint which includes a shaft member and a coaxial sleeve member arranged for relative longitudinal movement and keyed to prevent relative rotation so as to transmit rotary driving force from one member to the other, the improvement comprising: two sets of keys on one of the members; corresponding sets of keyways on the other of the members, the keys and keyways each having faces transverse to the circumference of the members, with pairs of the faces being spaced apart circumferentially; and a plurality of rigid cylindrical rollers between each cooperating pair of faces with their axes of rotation effectively on radii of the members; each set of keys having two keys located on opposite sides of the axis of rotation of the members from one another, and the keys and keyways of one set being angularly displaced substantially 90* from the keys and keyways of the other set.
Claim 2
Dependent Claim
151 words
In a keyed joint which includes a shaft member and a coaxial sleeve member arranged for relative longitudinal movement and keyed to prevent relative rotation so as to transmit rotary driving force from one member to the other, the improvement comprising: two sets of keys on one of the members; corresponding sets of keyways on the other of the members, the keys and keyways each having faces transverse to the circumference of the members, with pairs of the faces being spaced apart circumferentially; and a plurality of rigid cylindrical rollers between each cooperating pair of faces with their axes of rotation effectively on radii of the members; each set of keys having two keys located on opposite sides of the axis of rotation of the members from one another, and the keys and keyways of one set being angularly displaced substantially 90* from the keys and keyways of the other set.
Claim 3
Dependent Claim
25 words
A keyed joint according to claim 1 wherein the keys are formed on the shaft member and the keyways are formed on the sleeve member.
Claim 4
Dependent Claim
52 words
A keyed joint according to claim 1 wherein one pair of said spaced apart transverse faces is provided on each key and co-operating keyway, a further pair of faces transverse to the circumferential direction being provided on each key and cooperating keyway, and said further pair being located closely adjacent one another.
Claim 5
Dependent Claim
220 words
In a keyed joint which includes a shaft member and a coaxial sleeve member arranged for relative longitudinal movement and keyed to prevent relative rotation so as to transmit rotary driving force from one member to the other, the improvement comprising: a set of keys on one of the members, each of said keys having faces transverse to the circumference of the members; a corresponding set of keyways on the other of the members, each of said keyways receiving one of the keys and having faces which are parallel to those of said one of the keys, and cooperating pairs of said parallel faces being spaced apart; and a plurality of rigid, cylindrical rollers between each cooperating pair of parallel faces, the axes or rotation of said rollers being parallel to said cooperating pairs of parallel faces, so the rollers make line contact with said faces, and said axes of rotation being effectively on radii of the members, said set of keys and corresponding set of keyways including a single key and keyway positioned on one side of a plane through the axis of rotation of the members and substantially 90* from said plane, and at least one key and keyway on the other side of said plane, and said keys and keyways being angularly substantially equidistant from one another.
Claim 6
Dependent Claim
220 words
In a keyed joint which includes a shaft member and a coaxial sleeve member arranged for relative longitudinal movement and keyed to prevent relative rotation so as to transmit rotary driving force from one member to the other, the improvement comprising: a set of keys on one of the members, each of said keys having faces transverse to the circumference of the members; a corresponding set of keyways on the other of the members, each of said keyways receiving one of the keys and having faces which are parallel to those of said one of the keys, and cooperating pairs of said parallel faces being spaced apart; and a plurality of rigid, cylindrical rollers between each cooperating pair of parallel faces, the axes or rotation of said rollers being parallel to said cooperating pairs of parallel faces, so the rollers make line contact with said faces, and said axes of rotation being effectively on radii of the members, said set of keys and corresponding set of keyways including a single key and keyway positioned on one side of a plane through the axis of rotation of the members and substantially 90* from said plane, and at least one key and keyway on the other side of said plane, and said keys and keyways being angularly substantially equidistant from one another.
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) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |