Golf swing training device

A golf swing training device, comprising:

• momentum detecting means mounted on a golfer's arm or the golf club or at least either one of the contact portions of the golfer's hand or fingers and the golf club for detecting a change in the momentum slightly before the top at the time of the back swing,
• notifying means for notifying a change in the momentum detected by said momentum detecting means to the golfer via a controller by a sound or speech, and
• transmitting means for transmitting signals selected from the group consisting of electric currents, mechanical vibrations and sound waves indicating a change in the momentum detected by said detecting means to the golfer's knee or waist on the side of the pivoting foot after weight shift.

A golf swing training device, comprising:

• detecting means for detecting that one of golfer's shoulders is in contact with or closest to the chin when the golfer has gotten into the back swing from the address position,
• a controller which receives signals from said detecting means, and
• transmitting means for transmitting signals selected from the group consisting of electric currents, mechanical vibrations and sound waves indicating the contact or closest approach detected by said detecting means to the golfer's knee and/or waist on the side of the pivoting foot after weight shift via said controller.

A golf swing training device, comprising:

• momentum detecting means mounted on one of a golfer's arm and a golf club, and either one of the contact portions of the golfer's hand or fingers and the golf club for detecting a change in the momentum before the golfer reaches the top at the time of the back swing, and
• transmitting means for transmitting signals selected from the group consisting of electric currents, mechanical vibrations and sound waves indicating a change in the momentum detected by said momentum detecting means to the golfer's knee and/or waist on the side of the pivoting foot after weight shift.

A golf swing training device, comprising:

• pressure detecting means provided on at least either one of contact portions of the golfer's thumb and the golf club grip in contact with the thumb for detecting the pressure between the thumb and the contact portion, and
• transmitting means for transmitting signals selected from the group consisting of electric currents, mechanical vibrations and sound waves indicating the pressure, when detected by said pressure detecting means, to the golfer's knee and/or waste on the side of the pivoting foot after weight shift.