Friction drive for line guide on bait cast reel
AssigneeZebco Corporation
InventorRobert F. Welch
Life of this patent
Estimating the term…
Abstract
An improvement in a bait cast reel of the type having a line-carrying spool, a rotatable crank handle with an associated crank shaft for imparting rotation to the spool to wind line thereon, a line guide, and a worm bear operable in response to rotation of the crank shaft for causing reciprocative movement of the line guide across the spool as the spool is rotated to thereby evenly distribute line on the spool. The improvement is a drive pulley element that follows rotation of the crank shaft and frictionally engages a shaft carrying the worm gear to impart rotation thereto. Slippage can occur between the drive element and the worm gear shaft when a predetermined resistance to rotation of the worm gear shaft is encountered, i.e. when a user's finger jams the line guide.
Claims3
An improved bait cast reel of the type having a line-carrying spool, a rotatable crank handle with an associated crank shaft for rotating the spool so that the line is wound thereon, a line guide, and rotating means for moving the line guide in a reciprocative manner axially across the spool to distribute line evenly thereover as the spool is rotated, the improvement comprising:
- a drive element with an annular drive surface;
- means mounting the drive element to the crank shaft so that the drive element follows rotation of the crank shaft;
- a pulley;
- means mounting the pulley to the means for moving the line guide to follow rotation thereof;
- and
- friction means on the pulley directly engaged by the annular drive surface for imparting rotation of the drive element to the pulley and for allowing relative rotation to occur between the drive element and the pulley with a predetermined force applied to said line guide tending to resist movement thereof,
- said friction means comprising a resilient O-ring that surrounds the pulley and is compressed between the pulley and the annular drive surface on the drive element,
- said annular drive surface having radially projecting circumferentially spaced teeth which tend to dig into the O-ring to both compress the O-ring against the pulley and key the drive element to the O-ring so that the line guide is positively driven by the drive element up to the point that said predetermined resistant force is applied to the line guide.
Dependencies are inferred from the claim text.