US3651876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick acting drive cap assembly
Assignee: Mobile Drilling Co Inc
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Filing: 1970-06-19
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Granted: 1972-03-28
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Expires: 1990-06-19
Abstract
Abstract A drive cap assembly for quick attachment and detachment from the top end of an earth boring hollow auger. The assembly has an outer casing with a hexagonally shaped rod mounted to one end for receiving the auger driver. The opposite casing end slips over the top end of the auger. A latch key is mountable to the hexagonal rod with a plug attached to one end for passing through a casing opening and into a slot on the outside surface of the auger thereby securing the drive cap assembly and auger together. A lock ring fits over the casing and latch key. A center rod driver fits within and is rotated by the casing and is threaded on one end to a shaft passing through the hollow auger.
Inventors
- 👤 William P Henson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:36
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/44; F; F16; F16B; F16B2200/00; F16B2200/69; F16B2200/71
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
101 words
A drive cap assembly for an earth-boring auger comprising: a casing having a top and bottom end and a side wall, said top end having means for receiving rotating power, said bottom end being hollow for receiving the top portion of said auger, said side wall having a hole therethrough, a latch key received upon said casing and having a plug passing through said hole and engaging said auger, said plug having a distal end lockingly abuttable against an outer wall of said auger; a ring received over said casing and said key and maintaining said casing and said key together.
Claim 2
Dependent Claim
101 words
A drive cap assembly for an earth-boring auger comprising: a casing having a top and bottom end and a side wall, said top end having means for receiving rotating power, said bottom end being hollow for receiving the top portion of said auger, said side wall having a hole therethrough, a latch key received upon said casing and having a plug passing through said hole and engaging said auger, said plug having a distal end lockingly abuttable against an outer wall of said auger; a ring received over said casing and said key and maintaining said casing and said key together.
Claim 3
Dependent Claim
85 words
The assembly of claim 1 additionally comprising: a center rod driver having a longitudinal driving axis and being coupled to a secondary drill shaft extending through said auger; a first extension fixedly attached to said casing and projecting interiorly therein and being offset from said axis, said extension being spaced from said side wall of said casing; a second extension fixedly attached to said center rod driver and positioned against said first extension to rotate about said axis with said auger and secondary drill shaft.
Claim 4
Dependent Claim
169 words
A drive cap assembly for an earth-boring auger comprising: a casing having a top and bottom end and a side wall, said top end having means for receiving rotating power, said bottom end being hollow for receiving the top portion of said auger, said side wall having a hole therethrough, a latch key received upon said casing and having a plug passing through said hole and engaging said auger; a ring received over said casing and said key and maintaining said casing and said key together; a center rod driver coupled to a secondary drill shaft extending througH said auger; a first extension fixedly attached to said casing; a second extension fixedly attached to said center rod driver for side abutment against said first extension and wherein: said center rod driver is threadedly secured to said secondary drill shaft, said center rod driver has a disc-shaped member resting on said top portion of said auger, said top portion has a slot on its outer periphery for engaging said plug.
Claim 5
Dependent Claim
169 words
A drive cap assembly for an earth-boring auger comprising: a casing having a top and bottom end and a side wall, said top end having means for receiving rotating power, said bottom end being hollow for receiving the top portion of said auger, said side wall having a hole therethrough, a latch key received upon said casing and having a plug passing through said hole and engaging said auger; a ring received over said casing and said key and maintaining said casing and said key together; a center rod driver coupled to a secondary drill shaft extending througH said auger; a first extension fixedly attached to said casing; a second extension fixedly attached to said center rod driver for side abutment against said first extension and wherein: said center rod driver is threadedly secured to said secondary drill shaft, said center rod driver has a disc-shaped member resting on said top portion of said auger, said top portion has a slot on its outer periphery for engaging said plug.
Claim 6
Dependent Claim
51 words
The assembly of claim 3 wherein: said first extension includes a first pair of bosses each being positioned adjacent the outer periphery of said top end; said second extension includes a second pair of bosses each positioned adjacent the outer periphery of said disc-shaped member adjacent said first pair of bosses.
Claim 7
Dependent Claim
40 words
The assembly of claim 4 wherein: said ring has a semi-circular portion, a tapering portion and a straight portion all integrally joined, said circular portion slidingly abuts against said casing and said straight portion slidingly abuts against said latch key.
Claim 8
Dependent Claim
87 words
A drive cap assembly for connecting a rotatable driver with an earth-boring auger and a secondary drill comprising: a hollow main body with a solid first end and a hollow second end; a rod fixedly attached to said first end and extending thereabove for receiving said rotatable driver; a plug separate from said body radially locking said main body to said auger, said plug projecting into said body and against said auger; a ring fitted around said casing and said plug locking said casing and plug together.
Claim 9
Dependent Claim
87 words
A drive cap assembly for connecting a rotatable driver with an earth-boring auger and a secondary drill comprising: a hollow main body with a solid first end and a hollow second end; a rod fixedly attached to said first end and extending thereabove for receiving said rotatable driver; a plug separate from said body radially locking said main body to said auger, said plug projecting into said body and against said auger; a ring fitted around said casing and said plug locking said casing and plug together.
Claim 10
Dependent Claim
92 words
The drive cap assembly of claim 6 additionally comprising: a center rod driver removably positioned within said hollow main body and connected to said secondary drill, said center rod driver abuttingly engaging said hollow main body so as to rotate said secondary drill with said hollow main body, said driver having a first and second disc integrally connected together with said second disc being the smaller thereof fitting within said auger spacing said secondary drill therefrom, said first disc contacting said solid first end of said casing and resting atop said auger.
Claim 11
Independent Claim
102 words
An apparatus for coupling a rotatable driver to an earth-boring auger and a shaft extending through said auger comprising: a casing into which said auger is telescoped, said casing having a top wall with a pair of depending members; a loose plug freely mountable to said casing and removably extending therethrough; said auger having a slot into which said plug projects locking said auger and said casing together; a headed bolt positioned entirely within said casing and having a pair of bosses fixedly fastened to its head, said bosses removable engaging said casing and abutting said members as said casing is rotated.
Claim 12
Independent Claim
102 words
An apparatus for coupling a rotatable driver to an earth-boring auger and a shaft extending through said auger comprising: a casing into which said auger is telescoped, said casing having a top wall with a pair of depending members; a loose plug freely mountable to said casing and removably extending therethrough; said auger having a slot into which said plug projects locking said auger and said casing together; a headed bolt positioned entirely within said casing and having a pair of bosses fixedly fastened to its head, said bosses removable engaging said casing and abutting said members as said casing is rotated.
Claim 13
Dependent Claim
30 words
The apparatus of claim 8 wherein: said means is a headed bolt with a pair of bosses fixedly fastened to its head, said pair of bosses removably engaging said casing.
Claim 14
Dependent Claim
40 words
The assembly of claim 1 wherein: said ring has a semi-circular portion, a tapering portion and a straight portion all integrally joined, said circular portion slidingly abuts against said casing and said straight portion slidingly abuts against said latch key.
Claim 15
Dependent Claim
53 words
The assembly of claim 2 wherein: said first extension includes a first pair of bosses each being positioned adjacent the outer periphery of said top end; and, said second extension includes a second pair of bosses each positioned adjacent the outer periphery of said center rod driver adjacent said first pair of bosses.
Claim 16
Dependent Claim
53 words
The assembly of claim 1 wherein: said ring has a semi-circular portion, a tapering portion and a straight portion all integrally joined, said circular portion slidingly abuts against said casing and said straight portion slidingly abuts against said latch key; and, said latch key is removably mounted on said means of said casing.
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) | 1975-03-28 | 1975-09-27 | 1976-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-28 | 1979-09-27 | 1980-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-28 | 1983-09-27 | 1984-03-28 | $7700.00 | Window Closed / Lapsed |