US3245482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pile driving hammers
Assignee: Composite Piling and Foundations Co Ltd
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Filing: 1963-06-21
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Granted: 1966-04-12
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Expires: 1983-06-21
Abstract
No abstract record available.
Inventors
- 👤 Williams Cyril Lewis
- 👤 Bennett John Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:28
CPC Classifications
E; E02; E02D; E02D7/00; E02D7/02; E02D7/06; E02D7/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A FRACTURE RESILIENT HEAVY PILE HAVING HAMMER COMPRISING A BOTTOM HEAVY METAL STRIKER WEIGHT; A CENTRALLY DISPOSED STEM WHICH IS ADAPTED TO HAVE AN ELEVATING CABLE CONNECTED TO THE UPPER END THEREOF, SECURED NONRESILIENTLY TO SAID STRIKER WEIGHT AND EXTENDING UPWARDLY THEREFROM A PLURALITY OF CENTRALLY APERTURED SUPERIMPOSED SUPPLEMENTAL METAL WEIGHTS MOUNTED ON SAID STEM; A RELATIVELY THIN CENTRALLY APERTURED DISC OF DISPLACEABLE AND COMPRESSIBLE PLIABLE MATERIAL MOUNTED ON SAID STEM BETWEEN THE OPPOSED SURFACES OF CONTIGUOUS SUPPLEMENTAL WEIGHTS AND BETWEEN THE STRIKER WEIGHT AND
Claim 2
Dependent Claim
85 words
A FRACTURE RESILIENT HEAVY PILE HAVING HAMMER COMPRISING A BOTTOM HEAVY METAL STRIKER WEIGHT; A CENTRALLY DISPOSED STEM WHICH IS ADAPTED TO HAVE AN ELEVATING CABLE CONNECTED TO THE UPPER END THEREOF, SECURED NONRESILIENTLY TO SAID STRIKER WEIGHT AND EXTENDING UPWARDLY THEREFROM A PLURALITY OF CENTRALLY APERTURED SUPERIMPOSED SUPPLEMENTAL METAL WEIGHTS MOUNTED ON SAID STEM; A RELATIVELY THIN CENTRALLY APERTURED DISC OF DISPLACEABLE AND COMPRESSIBLE PLIABLE MATERIAL MOUNTED ON SAID STEM BETWEEN THE OPPOSED SURFACES OF CONTIGUOUS SUPPLEMENTAL WEIGHTS AND BETWEEN THE STRIKER WEIGHT AND
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) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |