# US 4,392,650 A · Tennis training aid

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- Number: US 4,392,650 A
- Document ID: US4392650A
- Status: Granted
- Kind: A
- Application number: 06/240,168
- Filed: 1981-03-03
- Granted: 1983-07-12
- Earliest claimed: 1981-03-03
- Assignees: Return on Investment Corporation
- Inventors: Carl W. Hilton
- Web page: https://patentgrep.com/patent/US4392650A

## CPC

- A63B 69/38: for tennis {(A63B61/006, A63B69/0073 and A63B69/0097 take precedence)}
- A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H)

## Abstract

A training aid primarily adapted to teach a tennis player proper form includes a hood, a headband, and an indicator for indicating when the user's head is tilted downwardly. The hood restricts peripheral vision and requires concentration on the ball. The indicator and hood may move relative to each other so that the indicator moves into the user's field of vision upon tilting of the hood.

## Claims

### Claim 1

A training aid primarily adapted for use in training a tennis player to properly orientate the head and to concentrate on the tennis ball, said aid comprising:
a hood having a pair of spaced side panels defining an aperture through which the user must view;
a band secured to said hood, said band adapted to support the hood on the head of the user and in a position so that the user must look through said aperture, said hood dimensioned to limit the peripheral vision of the user; and
indicator means secured to said hood adjacent said aperture for visually indicating when the user moves his head and eyes from a normal horizontal position relative to a playing surface by moving into and at least partially blocking said aperture of said hood.

### Claim 2 (depends on 1)

A training aid as defined by claim 1 wherein said hood further includes a front panel having generally vertically oriented lateral side edges, said side panels being joined to said lateral side edges and said front panel defining said aperture.

### Claim 3 (depends on 2)

A training aid as defined by claim 2 wherein said hood further includes a top panel joined to said front panel along a top edge thereof and also joined to said side panels.

### Claim 4 (depends on 3)

A training aid as defined by claim 3 wherein said indicator means comprises:
a generally U-shaped member having a base portion and side leg portions;
pivot means engaging said side leg portions for pivotally securing said U-shaped member to said hood in a position wherein said base portion is adjacent said aperture; and
counterweight means on at least one of said side leg portions for countering the weight of said base portion so that said U-shaped member is in equilibrium about said pivot means, said U-shaped member staying in said normal horizontal position so as to block said aperture when said hood tilts downwardly from horizontal.

### Claim 5

A training aid primarily adapted for use in training a tennis player to properly orientate the head and to concentrate on the tennis ball, said aid comprising:
a hood having a pair of spaced side panels defining an aperture through which the user must view;
a band secured to said hood, said band adapted to support the hood on the head of the user and in a position so that the user must look through said aperture, said hood dimensioned to limit the peripheral vision of the user; and
indicator means secured to said hood adjacent said aperture for visually indicating when the user moves his head and eyes from a normal horizontal position relative to a playing surface, and wherein said indicator means comprises:
a member pivoted to said hood, said member having a vision blocking portion at one end and a counterweight at an end opposite said one end; and
pivot means engaging said member for pivoting said member to said hood so that said member, due to said counterweight, will essentially stay in said normal horizontal position as said hood moves from horizontal due to tilting of the user's head.

### Claim 6

A device primarily adapted for training a tennis player to bend the knees and maintain the eyes in essentially a horizontal position relative to the playing surface, said device comprising:
a peripheral vision restricting means for defining a limited forward field of view for the player;
support means engaging said vision restricting means for supporting same on the head of the player at the level of the eyes of the user; and
head tilt indicating means supported on one of said vision restricting means and said support means and actuable by gravity for indicating to the player when the head is tilted substantially vertically downwardly from said horizontal position by moving into and at least partially blocking said limited field of view defined by said vision restrictring means upon tilting of the device from said horizontal position.

### Claim 7 (depends on 6)

A device as defined by claim 6 wherein said vision restricting means further includes means for restricting downward and upward vision of the player.

### Claim 8 (depends on 7)

A device as defined by claim 7 wherein said vision restricting means comprises:
a hood having a top panel and transversely spaced side panels joined to said top panel.

### Claim 9 (depends on 8)

A device as defined by claim 8 wherein said vision restricting means further includes a front panel joined to said top panel and said side panels, said front panel defining an aperture through which the player looks and a depending lower portion extending downwardly from said aperture to block downward vision of the player.

### Claim 10 (depends on 9)

A device as defined by claim 9 wherein said tilt indicating means comprises:
a member; and
means for supporting said member with respect to said vision restricting means so that said member moves into the field of view of the player when the player tilts his head downwardly from said horizontal position.

### Claim 11 (depends on 9)

A device as defined by claim 9 wherein said indicator means comprises:
a generally U-shaped member having a base portion and side leg portions;
pivot means engaging said side leg portions for pivotally securing said U-shaped member to said hood in a position wherein said base portion is adjacent said aperture; and
counterweight means on at least one of said side leg portions for countering the weight of said base portion so that said U-shaped member is in equilibrium about said pivot means, said U-shaped member staying in an essentially fixed position so as to block said aperture when said hood tilts downwardly from horizontal.

### Claim 12 (depends on 11)

A device as defined by claim 11 wherein said hood is formed in one piece from an opaque material.

### Claim 13 (depends on 6)

A device as defined by claim 6 wherein said tilt indicating means comprising:
a member; and
means for supporting said member with respect to said vision restricting means so that said member moves into the field of view of the player when the player tilts his head downwardly from said horizontal position.

### Claim 14

A device primarily adapted for training a tennis player to bend the knees and maintain the eyes in essentially a horizontal position relative to the playing surface, said device comprising:
a peripheral vision restricting means for defining a limited field of view for the player;
support means engaging said vision restricting means for supporting same on the head of the player at the level of the eyes of the user; and
head tilt indicating means supported on one of said vision restricting means and said support means for indicating to the player when the head is tilted downwardly from said horizontal position, said head tilt indicating means providing a visual indication to the player when the head is tilted downwardly, and wherein said tilt indicating means includes:
a member having a vision blocking portion at one end and a counterweight at an end opposite said one end; and
pivot means engaging said member for pivoting said member to said hood so that said member, due to said counterweight, will stay in essentially a horizontal position as said hood moves from horizontal due to tilting of the user's head.