Back to results
US 7,458,907 B2Granted
Artificial pitcher for practicing the hitting skill of baseball
OwnerChi-Sung Wanginventor
Life of this patent
Estimating the term…
Abstract
An artificial pitcher for practicing the hitting skill of baseball includes an artificial pitcher on a support and having a ball holder on top, a main spring biased a stroke which are held by a hook on a hollow interior cylindrical main body, and a control device positioned remote from the pitcher having a rope to control the hook to release the stroke to hit a baseball from the ball holder flying to a batter. In order to pitch a transforming ball, an angular adjustment plate is positioned beside the main body to help the main body to adjust its angle of elevation.
Claims3
An artificial pitcher for practicing the hitting skill of baseball comprising:
- a rectangular support having a plurality of legs secured to an underside of the rectangular support for inserting into a ground surface;
- a lug secured on a top surface of the rectangular support including a pair of aligned holes;
- a semi-circular angular adjustment plate uprightly disposed on a top surface of the rectangular support abutting the lug and further including an arcuate slot;
- an artificial pitcher having a hollow cylindrical main body having a transverse tube attached to a lower end engaged within said lug and rotatably secured by a bolt;
- a transverse rod attached to a lower periphery and slidably engaged in the arcuate slot of said semi-circular adjustment plate, the transverse rod operated by an eccentric handle,
- a stopping rod attached to a lower periphery opposite to the transverse rod, a substantially L-shaped hook attached on the lower periphery and held in place by a slopping rod having a small spring connected to a transverse portion of the L-shaped hook and a small projection, the small projection having a hook head on a top portion and a plane portion at an outer end of a transverse portion;
- a pair of slits placed in opposing peripheries of the hollow cylindrical main body, a main spring biasing a stroke inside the hollow cylindrical main body;
- a tread rod and a catch rod projected outward from opposing peripheries of said stroke and sliding in the pair of slits respectively;
- a horizontal plate including a central hole connected to a top portion of the hollow cylindrical main body;
- an outer spring wrapped on an outer periphery of the hollow cylindrical main body biased between the horizontal plate and the tread rod;
- a ball holder attached to the top portion of the hollow cylindrical main body having a central bore engaged with the central hole of the horizontal plate and a pair of slots formed within the horizontal plate for receiving a pair of bolts and butterfly nuts, and a guide stripe beside a slit to cope with a bearing of the tread rod for balancing the tread rod;
- a control device positioned away from the artificial pitcher having a rectangular base, the base including a plurality of legs insertible into a ground surface;
- a tread plate biased by a spring on a top surface of the base and a rope having one end connected to an underside of the tread plate and another end connected to the hook of said artificial pitcher.
10 more elements
Dependencies are inferred from the claim text.