US3673813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torsionally resilient shaft coupling
Assignee: K-LEE ACQUISITION CORP A CORP OF
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Filing: 1971-03-12
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Granted: 1972-07-04
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Expires: 1991-03-12
Abstract
Abstract A torsionally flexible shaft coupling for transmitting torque from a driving shaft to a driven shaft includes three radially overlying concentric tube members attached to each other. The attachment with a succeeding concentric member is axially spaced from the attachment with an immediately preceding concentric member for transmitting torque from the driving shaft consecutively through each succeeding concentric member and subsequently to the driven shaft.
Inventors
- 👤 John Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:01
CPC Classifications
F; F16; F16D; F16D3/00; F16D3/50; F16D3/72; F16C; F16C1/00
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
117 words
A torsionally resilient shaft coupling for transmitting torque from a driving shaft to a driven shaft substantially coaxially aligned therewith, comprising: an inner tubular member adapted for connection to said driving shaft; an outer tubular member surrounding said inner member and defining an annular cavity therebetween, said outer member adapted for connection to said driven shaft; and at least one intermediate tubular member in said annular cavity, one end of said intermediate member connected to a corresponding end of said inner member and the opposite end connected to a corresponding end of said outer member, for transmitting torque from said driving shaft through said inner member, said intermediate member, and said outer member to said driven shaft.
Claim 2
Dependent Claim
117 words
A torsionally resilient shaft coupling for transmitting torque from a driving shaft to a driven shaft substantially coaxially aligned therewith, comprising: an inner tubular member adapted for connection to said driving shaft; an outer tubular member surrounding said inner member and defining an annular cavity therebetween, said outer member adapted for connection to said driven shaft; and at least one intermediate tubular member in said annular cavity, one end of said intermediate member connected to a corresponding end of said inner member and the opposite end connected to a corresponding end of said outer member, for transmitting torque from said driving shaft through said inner member, said intermediate member, and said outer member to said driven shaft.
Claim 3
Dependent Claim
37 words
The coupling of claim 1 wherein said intermediate tubular member defines a first annular clearance cavity between it and said inner tubular member and defines a second annular clearance cavity between it and said outer tubular member.
Claim 4
Dependent Claim
48 words
The coupling of claim 2 further including pilot means between said inner tubular member and said intermediate member axially opposite the connection of such members and between said outer member and said intermediate member axially opposite the connection of such members for maintaining said tubular members substantially concentric.
Claim 5
Dependent Claim
29 words
The coupling of claim 3 wherein said pilot means comprises raised annular seats formed on at least two of said tubular members in contact with an adjacent tubular member.
Claim 6
Dependent Claim
22 words
The coupling of claim 2 further including vibration damping means in said first and second annular clearance cavities between adjacent tubular members.
Claim 7
Dependent Claim
30 words
The coupling of claim 5 wherein said vibration damping means comprises a highly viscous liquid sealed between adjacent tubular members of sufficient quantity to substantially fill said annular clearance cavities.
Claim 8
Dependent Claim
34 words
The coupling of claim 5 wherein said vibration damping means comprises an annular sleeve of solid resilient material between said tubular members, said sleeve having a thickness sufficient for contacting each of said members.
Claim 9
Dependent Claim
17 words
The coupling of claim 7 wherein said solid resilient material is precompressed between said adjacent tubular members.
Claim 10
Dependent Claim
66 words
The coupling of claim 1 wherein said intermediate tubular member is frusto-conical for defining a first annular tapered clearance cavity between it and said inner tubular member and for defining a second annular tapered clearance cavity between it and said outer tubular member, said first cavity tapering radially outward in a first axial direction and said second cavity tapering radially inward in an opposite axial direction.
Claim 11
Dependent Claim
15 words
The coupling of claim 9 further including vibration damping means within said tapered annular cavities.
Claim 12
Dependent Claim
33 words
The coupling of claim 10 wherein said vibration damping means comprises a tapered annular sleeve of solid resilient material within each of said tapered annular cavities in contact with said adjacent tubular members.
Claim 13
Dependent Claim
17 words
The coupling of claim 11 wherein said solid resilient material is precompressed within said tapered annular cavities.
Claim 14
Dependent Claim
62 words
The coupling of claim 1 further including: a first hub member secured for rotation with said driving member and rigidly secured to said inner tubular member for driving said tubular member; and a second hub member rigidly secured to said outer tubular member and secured for rotation with said driven member for driving said driven member during rotation of said driving member.
Claim 15
Dependent Claim
85 words
The coupling of claim 13 wherein said first hub member includes: an inner hub member secured for rotation with said driving member, said inner hub member having an annular ring of external spur gear teeth formed thereon; and an outer hub member rigidly secured to said inner tubular member, said outer hub member having an annular ring of internal spur gear teeth formed thereon in meshing engagement with said external spur gear teeth for transmitting torque from said driving member to said inner tubular member.
Claim 16
Dependent Claim
85 words
The coupling of claim 14 wherein said second hub member includes: an inner hub member secured for rotation with said driven member, said inner hub member having an annular ring of external spur gear teeth formed thereon; and an outer hub member rigidly secured to said outer tubular member, said outer hub member having an annular ring of internal spur gear teeth formed thereon in meshing engagement with said external spur gear teeth for transmitting torque from said outer tubular member to said driven member.
Claim 17
Independent Claim
158 words
A method of transmitting torque from a first shaft to a second shaft substantially coaxially aligned therewith comprising the steps of: transmitting torque from said first shaft through a first connection to an outer tubular member in substantial axial alignment with said first shaft; transmitting torque from said outer tubular member to an intermediate tubular member substantially coaxially aligned within said outer tubular member through a second connection axially spaced from said first connection toward said second shaft; transmitting torque from said intermediate tubular member to an inner tubular member substantially coaxially aligned within said intermediate tubular member through a third connection axially spaced from said second connection toward said first shaft; and transmitting torque from said inner tubular member to said second shaft through a fourth connection axially spaced from said third connection toward said second shaft; whereby torque is transmitted from said first shaft to said second shaft through said connections at alternate axially spaced locations.
Claim 18
Independent Claim
158 words
A method of transmitting torque from a first shaft to a second shaft substantially coaxially aligned therewith comprising the steps of: transmitting torque from said first shaft through a first connection to an outer tubular member in substantial axial alignment with said first shaft; transmitting torque from said outer tubular member to an intermediate tubular member substantially coaxially aligned within said outer tubular member through a second connection axially spaced from said first connection toward said second shaft; transmitting torque from said intermediate tubular member to an inner tubular member substantially coaxially aligned within said intermediate tubular member through a third connection axially spaced from said second connection toward said first shaft; and transmitting torque from said inner tubular member to said second shaft through a fourth connection axially spaced from said third connection toward said second shaft; whereby torque is transmitted from said first shaft to said second shaft through said connections at alternate axially spaced locations.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |