US4207947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for increasing traction in racehorse horseshoes
Assignee: JOJAN Inc
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Filing: 1977-08-26
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Granted: 1980-06-17
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Expires: 1997-08-26
Abstract
Abstract An insert for use with a racehorse shoe having a front end calk, the insert being a plate able to be nailed to the horse's hoof between the shoe and the hoof, the plate having a forward curved edge to generally conform to the front edge of the hoof, area portions of the plate being able to receive the nails securing the shoe to the hoof, and a second rearward calk on the plate having a downwardly directed configuration similar to the front calk on the shoe. In the combination of a racehorse shoe on a racehorse hoof including, a shoe having a front first calk, the shoe being nailed to the hoof, and a second rearward calk secured to the shoe and to the hoof, the second calk being centrally positioned transversely within the shoe and being adjacent the forward half of the shoe.
Inventors
- 👤 Rick R. Cope
- 👤 Delbert L. Rosengrants
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:52
CPC Classifications
A; A01; A01L; A01L1/00; A01L1/04; A01L7/00; A01L7/02; A01L7/04
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
80 words
An insert for use with a racehorse shoe having a front end calk, comprising: a plate adapted to be nailed to the horse's hoof between the shoe and the hoof, said plate having a forward curved edge to area portions of said plate having means to permit nailing of the plate to the hoof with nails securing the shoe to the hoof, and turf engaging means extending downwardly from the plate and rearwardly of the front calk on the shoe.
Claim 2
Dependent Claim
80 words
An insert for use with a racehorse shoe having a front end calk, comprising: a plate adapted to be nailed to the horse's hoof between the shoe and the hoof, said plate having a forward curved edge to area portions of said plate having means to permit nailing of the plate to the hoof with nails securing the shoe to the hoof, and turf engaging means extending downwardly from the plate and rearwardly of the front calk on the shoe.
Claim 3
Dependent Claim
28 words
The invention according to claim 1 in which: said last means is a second calk having a downwardly directed configuration similar to the front calk on the shoe.
Claim 4
Dependent Claim
42 words
The invention according to claim 2 in which: an opening is adapted to extend through the plate adjacent the forward end of the shoe and the second calk, and outer side portions extend laterally outwardly of the opening and the second calk.
Claim 5
Dependent Claim
54 words
The invention according to claim 3 in which: peripheral outer edges of the plate, including the forward curved edge, generally form an approximate quadrant in plan with respect to the hoof, and approximate radially extending edges at a rear end of the plate terminate inwardly in a concave rear edge adjacent the second calk.
Claim 6
Dependent Claim
31 words
The invention according to claim 4 in which: gripping and aligning tabs are adapted to extend upwardly onto the hoof extending from said peripheral outer edges adjacent said approximate radial edges.
Claim 7
Dependent Claim
25 words
The invention according to claim 3 including: rearward side portions rearwardly of said outer side portions to conform to the rear portions of the shoe.
Claim 8
Dependent Claim
69 words
The invention according to claim 3 in which: peripheral outer edges of the plate, including the forward curved edge, conform to the front portion of the shoe, generally transverse rear edges of the plate extend generally inwardly from the outer edges and terminate adjacent the second calk, said plate terminating rearwardly at a position underlying the forward half of the hoof and overlying the forward half of the shoe.
Claim 9
Dependent Claim
22 words
The invention according to claim 7 in which: spacers are adapted to fit between the shoe and hoof rearwardly of the plate.
Claim 10
Dependent Claim
30 words
The invention according to claim 2 in which: the front calk on the shoe is adapted to extend downwardly from the hoof farther than the second calk on the plate.
Claim 11
Dependent Claim
35 words
The invention according to claim 9 in which: said calks have convex leading faces and concave rear faces terminating in a downwardly facing substantially flat edge parallel to the plate and curved as the faces.
Claim 12
Dependent Claim
21 words
The invention according to claim 2 including: a third calk rearwardly of and similar to said second calk on said plate.
Claim 13
Dependent Claim
26 words
The invention according to claim 2 in which: said plate is tapered rearwardly from the forward edge thereof forming approximate knife edges at its rear end.
Claim 14
Dependent Claim
65 words
The invention according to claim 2 in which: said plate is metal and has substantially flat opposing sides, one of said sides being adapted to be in contact with said hoof and the other side being adapted to be in contact with said shoe, said flat sides and edges thereof being coated with a plastic material, said area portions being comprised entirely of said plastic.
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) | 1983-06-17 | 1983-12-17 | 1984-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-06-17 | 1987-12-17 | 1988-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-06-17 | 1991-12-17 | 1992-06-17 | $7700.00 | Window Closed / Lapsed |