US3797577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turf perforating tool
Assignee: Individual
•
Filing: 1972-06-13
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Granted: 1974-03-19
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Expires: 1992-06-13
Abstract
Abstract A turf perforating tool for use with conventional turf perforating equipment, the tool having a hinge plate secured to a reciprocating shaft, a hinge mechanism interconnecting the plate to a cap, and a cutting element having a core passage formed therein and threadably secured to the cap, wherein the cutting element is substantially vertically disposed during the core cutting process but will pivot slightly during the core removing process thus substantially preventing the compaction of soil around the hole formed by the tool.
Inventors
- 👤 M Killion
- 👤 R Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:48
CPC Classifications
A; A01; A01B; A01B45/00; A01B45/02; A01B45/023
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
96 words
A turf perforating tool for use with said substantially vertically disposed reciprocating member of turf perforating equipment, a turf perforating tool comprising: a substantially vertically disposed shaft means secured to the reciprocating member and depending from the member; a hinge mechanism operably secured to said shaft means; a cap secured to said hinge mechanism; and a cutting element secured to and depending from said cap wherein said element has a bore filled therein which extends axially from the bottom thereof a short distance and then is inclined to exit from said element rearwall below said cap.
Claim 2
Dependent Claim
96 words
A turf perforating tool for use with said substantially vertically disposed reciprocating member of turf perforating equipment, a turf perforating tool comprising: a substantially vertically disposed shaft means secured to the reciprocating member and depending from the member; a hinge mechanism operably secured to said shaft means; a cap secured to said hinge mechanism; and a cutting element secured to and depending from said cap wherein said element has a bore filled therein which extends axially from the bottom thereof a short distance and then is inclined to exit from said element rearwall below said cap.
Claim 3
Dependent Claim
43 words
A turf perforating tool as defined in claim 1, wherein said shaft means includes a shaft secured on its upper end to the member and having a hinge plate secured to its lower end, said hinge mechanism operably secured to said hinge plate.
Claim 4
Dependent Claim
40 words
A turf perforating tool as defined in claim 1, wherein said element is cylindrical in shape and has an external circumferential bevel formed on the lower portion thereof thus forming a circular cutting edge on the bottom of said element.
Claim 5
Dependent Claim
25 words
A turf perforating tool as defined in claim 1 wherein said hinge mechanism is secured to said shaft means at said shaft means longitudinal axis.
Claim 6
Dependent Claim
40 words
A turf perforating tool as defined in claim 3 wherein a boss is secured to said element opposite said bore exit, said boss extending vertically the length of said bore exit and having parallel sidewalls projecting outwardly of said element.
Claim 7
Dependent Claim
27 words
A turf perforating tool as defined in claim 4, and including a spring means operably connected to said cap for biasing said element into a vertical position.
Claim 8
Dependent Claim
55 words
A turf perforating tool as defined in claim 2, wherein said hinge mechanism includes a pair of spaced tabs secured to said cap and projecting toward said plate, said tabs and said plate having aligned holes formed therethrough; and a hinge pin disposed in said holes for hingedly connecting said plate and said cap together.
Claim 9
Dependent Claim
41 words
A turf perforating tool as defined in claim 7, wherein said plate lower surface is beveled from said plate hole to one side thereof and acts as a stop to limit the pivotal action of said cap relative to said plate.
Claim 10
Dependent Claim
98 words
A turf perforating tool as defined in claim 8, wherein said element has a bore formed therein which extends axially from the bottom thereof a short distance and then is inclined to exit from said element rearwall below said cap, said element is cylindrical in shape and has an external circumferential bevel formed on its lower portion thus forming a circular cutting edge on the bottom thereof, and a boss is secured to said element opposite said bore exit, said boss extending vertically the length of said bore exit and having parallel sidewalls projecting outwardly of said element.
Claim 11
Dependent Claim
18 words
A turf perforating tool as defined in claim 9, wherein said element is detachably secured to said cap.
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) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |