US3746330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drill stem shock absorber
Assignee: Individual
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Filing: 1971-10-28
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Granted: 1973-07-17
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Expires: 1991-10-28
Abstract
Abstract From a broad aspect, the present invention relates to a shock absorber for connecting a drive shaft with a driven shaft. A drive plate is attached to the drive shaft and a driven plate, axially disposed from the drive plate, is connected to a driven shaft. A washer is axially disposed from the driven plate on the oppsoite side from the drive plate. A first and second resilient means is provided between the driven plate and the drive plate and between the driven plate and the washer, respectively. Pin projections extend from the driven plate into at least one of the first and second resilient means. Fastening means extend between the drive plate and the washer to precompress the first and second resilient means to a predetermined pressure and to cause the resilient to compress against the pin projections extending therein. The fastening means also pass through the plane of the driven plate without connection therewith.
Inventors
- 👤 W Taciuk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:50
CPC Classifications
F; F16; F16D; F16D3/00; F16D3/50; F16D3/78; F16F; F16F15/00; F16F15/10; F16F15/14; F16F15/1407; F16F15/1414; F16F15/1435; F16F15/1442
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
143 words
A shock absorber for connecting a drive shaft with a driven shaft the combination comprising: a drive plate attachable to a drive shaft; a driven plate axially disposed from said drive plate attachable to a driven shaft; a washer axially disposed from said driven plate on the opposite side from said drive plate; first resilient means between said drive plate and said driven plate; second resilient means between said driven plate and said washer; pin projections extending from said driven plate into at least one of said first and second resilient means; and fastening means extending between said drive plate and said washer and through both said first and second resilient means and to cause said resilient means to compress against both said pin projections and said fastening means, said fastening means passing through the plane of said driven plate without connection therewith.
Claim 2
Dependent Claim
143 words
A shock absorber for connecting a drive shaft with a driven shaft the combination comprising: a drive plate attachable to a drive shaft; a driven plate axially disposed from said drive plate attachable to a driven shaft; a washer axially disposed from said driven plate on the opposite side from said drive plate; first resilient means between said drive plate and said driven plate; second resilient means between said driven plate and said washer; pin projections extending from said driven plate into at least one of said first and second resilient means; and fastening means extending between said drive plate and said washer and through both said first and second resilient means and to cause said resilient means to compress against both said pin projections and said fastening means, said fastening means passing through the plane of said driven plate without connection therewith.
Claim 3
Dependent Claim
36 words
A shock absorber as claimed in claim 1 wherein said fastening means are adjustable to precompress said first and second resilient means to a predetermined pressure exceeding the maximum downward pressure applied to said drive plate.
Claim 4
Dependent Claim
64 words
A shock absorber as claimed in claim 2 wherein said driven plate and said washer are displaced relative to said drive plate when said drive plate is subjected to downward pressure, said first and second resilient means remaining under compression between said driven plate and drive plate and said driven plate and washer, respectively, during conditions of maximum downward pressure against said drive plate.
Claim 5
Dependent Claim
42 words
A shock absorber as in claim 1 wherein said fastening means and said pin projections are disposed in a circular pattern, whereby torque is transmitted from said fastening means to said resilient means and from said resilient means to said pin projections.
Claim 6
Dependent Claim
42 words
A shock absorber as in claim 1 wherein said fastening means are bolts, said bolts and said pin projections being aligned in spaced apart relationship in a circle concentric with said drive shaft when said shock absorber is in its unloaded condition.
Claim 7
Dependent Claim
25 words
A shock absorber as in claim 1 wherein said first and second resilient means are annular rubber discs lying in face-to-face relationship with each other.
Claim 8
Dependent Claim
45 words
A shock absorber as in claim 1 wherein there is further provided an annular skirt projecting from said drive plate to form with said drive plate a cup-shaped housing in which said driven plate, said first and second resilient means and said washer are contained.
Claim 9
Dependent Claim
162 words
A shock absorber for connecting a drive shaft with a driven shaft the combination comprising: a drive plate attachable to a drive shaft; a driven plate axially disposed from said drive plate attachable to a driven shaft; a washer axially disposed from said driven plate on the opposite side from said drive plate; first resilient means between said drive plate and said driven plate; second resilient means between said driven plate and said washer; pin projections extending from said driven plate into at least one of said first and second resilient means; and fastening means extending between said drive plate and said washer, said first resilient means having a hollow center portion, said drive and driven plates together with ends of drive and driven shafts to which said plates are attached cooperating with said first resilient means to present a sealed interior between the ends of the shafts for communication of the interior of one shaft with the interior of the other.
Claim 10
Dependent Claim
162 words
A shock absorber for connecting a drive shaft with a driven shaft the combination comprising: a drive plate attachable to a drive shaft; a driven plate axially disposed from said drive plate attachable to a driven shaft; a washer axially disposed from said driven plate on the opposite side from said drive plate; first resilient means between said drive plate and said driven plate; second resilient means between said driven plate and said washer; pin projections extending from said driven plate into at least one of said first and second resilient means; and fastening means extending between said drive plate and said washer, said first resilient means having a hollow center portion, said drive and driven plates together with ends of drive and driven shafts to which said plates are attached cooperating with said first resilient means to present a sealed interior between the ends of the shafts for communication of the interior of one shaft with the interior of the other.
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) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |