Winch for boat trailer
First Claim
Patent Images
1. A winch for operating off a 12-volt DC power supply so as to draw fewer than 30 amps comprising in combination:
- a motor having an output shaft with a first gear;
a first gear pair having a second gear for meshing with said first gear and a third gear, said second gear having a greater diameter than said first gear and said third gear having a smaller diameter than said second gear, said second and third gears being operatively interconnected to rotate in unison;
a second gear pair having a fourth gear meshed with said third gear and having a diameter at least as great as said third gear and a fifth gear of a smaller diameter than said fourth gear, said fourth and fifth gears being operatively interconnected to rotate in unison;
a sixth gear meshed with said fifth gear, said sixth gear having a greater diameter than said fifth gear;
a seventh gear having a smaller diameter than said sixth gear and adapted to be rotated in unison with said sixth gear;
an eighth gear meshed with said seventh gear and having a diameter greater than said seventh gear;
a spool operatively connected to said eighth gear to rotate in unison therewith; and
a compressible, flexible cable made of a synthetic material having one end anchored to said spool, said cable being wrappable about said spool upon energization of said motor.
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Accused Products
Abstract
A low-amp winch for use on boat trailers is provided with a higher gear reduction than conventional winches and with a winch cable made of a softer material and shorter length than conventional boat winches to reduce the current draw from the motor. The winch is capable of operating off a seven-pin RV socket which provides 12 volts of DC power at no greater than 30 amps.
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Citations
10 Claims
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1. A winch for operating off a 12-volt DC power supply so as to draw fewer than 30 amps comprising in combination:
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a motor having an output shaft with a first gear; a first gear pair having a second gear for meshing with said first gear and a third gear, said second gear having a greater diameter than said first gear and said third gear having a smaller diameter than said second gear, said second and third gears being operatively interconnected to rotate in unison; a second gear pair having a fourth gear meshed with said third gear and having a diameter at least as great as said third gear and a fifth gear of a smaller diameter than said fourth gear, said fourth and fifth gears being operatively interconnected to rotate in unison; a sixth gear meshed with said fifth gear, said sixth gear having a greater diameter than said fifth gear; a seventh gear having a smaller diameter than said sixth gear and adapted to be rotated in unison with said sixth gear; an eighth gear meshed with said seventh gear and having a diameter greater than said seventh gear; a spool operatively connected to said eighth gear to rotate in unison therewith; and a compressible, flexible cable made of a synthetic material having one end anchored to said spool, said cable being wrappable about said spool upon energization of said motor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification