Patent US4150821A successfully refreshed from Google Patents.
US4150821A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tennis training device
Assignee: Individual
•
Filing: 1977-07-25
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Granted: 1979-04-24
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Expires: 1997-07-25
Abstract
Abstract A tennis training aid that also operates to reduce the likelihood of developing tennis elbow. The training aid is comprised of a flexible strap that extends from a fitting on the head of the player's racquet to a member engaging his wrist. The fitting is attached to the racquet head at approximately its widest transverse point. The connecting strap is an aid in establishing a desired angular relation between the player's arm and the longitudinal axis of the racquet. At the same time, the connecting strap minimizes the possibility of stretching or overextending the extensor muscles of the players's forearm which stretching frequently leads to the injury known as tennis elbow.
Inventors
- 👤 Gabor B. Racz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:08
CPC Classifications
A; A63; A63B; A63B69/00; A63B69/38
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
84 words
A tennis training device adapted to operate in conjunction with a tennis player's racquet and wrist, the device comprising a fitting mounted on the head of the racquet at approximately its widest transverse point, a wrist connection member, and a flexible strap member detachably secured at its opposite ends to said fitting and wrist connection member so as to extend therebetween, the strap member operating to aid in establishing a desired angular relation between the player's arm and the longitudinal axis of the racquet.
Claim 2
Dependent Claim
84 words
A tennis training device adapted to operate in conjunction with a tennis player's racquet and wrist, the device comprising a fitting mounted on the head of the racquet at approximately its widest transverse point, a wrist connection member, and a flexible strap member detachably secured at its opposite ends to said fitting and wrist connection member so as to extend therebetween, the strap member operating to aid in establishing a desired angular relation between the player's arm and the longitudinal axis of the racquet.
Claim 3
Dependent Claim
26 words
A tennis training device as defined in claim 1 wherein the wrist connection member is a wrist encircling band having means for connecting the strap thereto.
Claim 4
Dependent Claim
24 words
A tennis training device as defined in claim 1 wherein the wrist connection member is a glove having means for connecting the strap thereto.
Claim 5
Dependent Claim
97 words
A tennis training device adapted to operate in conjunction with a tennis player's racquet and wrist, the device comprising a hinged fitting detachably secured to the racquet head at approximately its widest transverse point, a connection member engaging the player's wrist, and a flexible strap having limited elasticity, the strap being detachably secured at one end to the fitting and at the other end to the connection member whereby it extends between the fitting and member and operates to aid in establishing a desired angular relation between the player's arm and the longitudinal axis of the racquet.
Claim 6
Dependent Claim
97 words
A tennis training device adapted to operate in conjunction with a tennis player's racquet and wrist, the device comprising a hinged fitting detachably secured to the racquet head at approximately its widest transverse point, a connection member engaging the player's wrist, and a flexible strap having limited elasticity, the strap being detachably secured at one end to the fitting and at the other end to the connection member whereby it extends between the fitting and member and operates to aid in establishing a desired angular relation between the player's arm and the longitudinal axis of the racquet.
Claim 7
Dependent Claim
34 words
A tennis training device as defined in claim 4 wherein the length of the strap is adjustable, the strap length being adjusted so that it extends between the fitting and connection member without slack.
Claim 8
Dependent Claim
25 words
A tennis training device as defined in claim 4 wherein the connection member is a wrist encircling band having means for connecting the strap thereto.
Claim 9
Dependent Claim
23 words
A tennis training device as defined in claim 4 wherein the connection member is a glove having means for connecting a strap thereto.
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) | 1982-04-23 | 1982-10-23 | 1983-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-23 | 1986-10-23 | 1987-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-23 | 1990-10-23 | 1991-04-24 | $7700.00 | Window Closed / Lapsed |