US4171803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Karate practice breaking board
Assignee: Individual
•
Filing: 1977-09-12
•
Granted: 1979-10-23
•
Expires: 1997-09-12
Abstract
Abstract A device for the practice of the martial art of karate, simulating a board to be broken and comprising a pair of clamp members adapted to simulate the shape of the board to be broken; the clamps are adapted to hold pieces of material of varying strength to approximate the varying sizes of board to be broken and a padded striking area may be provided if desired.
Inventors
- 👤 Roger D. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:39
CPC Classifications
A; A63; A63B; A63B69/00; A63B69/331; A63B2244/00; A63B2244/10; A63B2244/106
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
98 words
A breaking board simulator comprising a pair of base members, clamping means in each of said base members, each clamping means including a pair of bolts extending through said base members, a clamping plate slidably mounted on said bolts, strip means held between said clamping plate and said base member at opposing edges of said strip means whereby said pair of base members is joined together, nut means on each bolt to clamp said plate and base member around said strip means, said strip means being proportioned to provide a breaking strength simulating that of a breaking board.
Claim 2
Dependent Claim
98 words
A breaking board simulator comprising a pair of base members, clamping means in each of said base members, each clamping means including a pair of bolts extending through said base members, a clamping plate slidably mounted on said bolts, strip means held between said clamping plate and said base member at opposing edges of said strip means whereby said pair of base members is joined together, nut means on each bolt to clamp said plate and base member around said strip means, said strip means being proportioned to provide a breaking strength simulating that of a breaking board.
Claim 3
Dependent Claim
28 words
The device of claim 1 in which said clamping plate is formed with surface irregularities in the area of engagement with said strip to provide more secure clamping.
Claim 4
Dependent Claim
24 words
The device of claim 1 in which said base members are formed with recesses in which said strip and said clamping means are recessed.
Claim 5
Dependent Claim
20 words
The device of claim 1 in which a padded target means is provided on one face of each base member.
References Cited (Backward Citations)
US1004987A
Cited
GB161716A
Cited
FR1420471A
Cited
US4004799A
Cited
US4052056A
Cited
DE2622491A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-10-22 | 1983-04-23 | 1983-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-22 | 1987-04-23 | 1987-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-22 | 1991-04-23 | 1991-10-23 | $7700.00 | Window Closed / Lapsed |