Patent US3685597A successfully refreshed from Google Patents.
US3685597A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for making holes in the ground by packing the latter
Assignee: Institute of Mining
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Filing: 1970-03-18
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Granted: 1972-08-22
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Expires: 1990-03-18
Abstract
Abstract A device for making holes in the ground by packing the latter, comprising a cylindrical housing with a pointed front portion on which there is mounted a tapered reamer introduced into the ground under the effect of impact delivered by a reciprocating striker accommodated in the housing.
Inventors
- 👤 Alexandr Dmitrievich Kostylev
- 👤 Konstantin Stepanovich Gurkov
- 👤 Nikolai Grigorievich Nazarov
- 👤 Khaim Berkovich Tkach
- 👤 Alexandr Ivanovich Demin
- 👤 Dmitry Ivanovich Vorobiev
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:37
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/28; E21B7/30; E21B7/26
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
107 words
A device for making holes in the ground by packing the latter, said device comprising: a housing including a front pointed portion, an intermediate conical portion extending rearwardly from the pointed portion, and a cylindrical portion extending rearwardly from the conical portion, said conical portion and cylindrical portion merging at a common diameter, a striker slidably supported in said housing, means for reciprocally moving the striker in the housing to deliver impact to the front of the housing, and a tapered reamer having a conical inner surface which can be fitted on the intermediate conical portion of the housing, said reamer including a rearwardly extending cylindrical skirt.
Claim 2
Independent Claim
107 words
A device for making holes in the ground by packing the latter, said device comprising: a housing including a front pointed portion, an intermediate conical portion extending rearwardly from the pointed portion, and a cylindrical portion extending rearwardly from the conical portion, said conical portion and cylindrical portion merging at a common diameter, a striker slidably supported in said housing, means for reciprocally moving the striker in the housing to deliver impact to the front of the housing, and a tapered reamer having a conical inner surface which can be fitted on the intermediate conical portion of the housing, said reamer including a rearwardly extending cylindrical skirt.
Claim 3
Dependent Claim
38 words
A device as claimed in claim 1 wherein said reamer has a front outer surface which is tapered at an angle which is less than the angle of friction of the material of the reamer with the ground.
Claim 4
Dependent Claim
26 words
A device as claimed in claim 1 wherein said housing is constructed such that the striker delivers impact thereto at a location within the conical portion.
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) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |