초록 ▼

A weed puller is disclosed having a tubular main body member in one end of which is mounted a piston that is spring-biased toward a released position adjacent the body one end. At its other end, the main body member is provided with a handle arrangement for displacing the piston to a retracted posit

A weed puller is disclosed having a tubular main body member in one end of which is mounted a piston that is spring-biased toward a released position adjacent the body one end. At its other end, the main body member is provided with a handle arrangement for displacing the piston to a retracted positon within the body member via a piston rod that extends longitudinally through the main body member and projects at its free end therefrom. A drive plate is incrementally displaced by a lever to incrementally displace the rod and the piston toward the retracted position, and a releasable locking plate locks the rod and the piston against return displacement toward the released position.

대표청구항 ▼

A weed pulling apparatus, comprising (a) a tubular main body member having one end for insertion into the ground around a weed to form a weed plug and having another end; (b) a piston rod being longitudinally disposed within said main body member and having two ends; (c) a piston connected to one of

A weed pulling apparatus, comprising (a) a tubular main body member having one end for insertion into the ground around a weed to form a weed plug and having another end; (b) a piston rod being longitudinally disposed within said main body member and having two ends; (c) a piston connected to one of said ends of said piston rod; (d) piston biasing means for biasing said piston toward the one end of said main body member; (e) means for driving said piston rod for moving said piston toward the other end of said main body member into a retracted position, said driving means including a drive plate having an opening formed therein receiving said piston rod, and drive plate biasing means for biasing said drive plate toward a first angularly binding position relative to said piston rod; (f) means for locking said piston rod with said piston in said retracted position, said locking means including a locking plate having an opening formed therein for receiving said piston rod, and locking plate biasing means for biasing said locking plate toward a second angularly binding position relative to said piston rod being different from said first angular binding position; and (g) means for releasing said piston rod permitting said piston biasing means to move said piston from said retracted position and eject the weed plug from said main body member.