Patent ID: 6920888
Filing Date: 2005-07-26
Classification: A01B

Abstract:
1. A foldable stick assembly, comprising a foldable tube unit, a sliding handle, a push rod unit, a ratchet socket, an upper ratchet, a pawl member, and a lower ratchet, wherein: the foldable tube unit includes a handle, an upper mounting tube, a lower mounting tube, an upper pivot sleeve, and a lower pivot sleeve, wherein: the upper mounting tube of the foldable tube unit has a lower portion formed with a longitudinal slide slot; the upper pivot sleeve of the foldable tube unit is mounted on the outer wall of a lower end of the upper mounting tube of the foldable tube unit; and the lower pivot sleeve of the foldable tube unit is mounted on the outer wall of the upper end of the lower mounting tube of the foldable tube unit, and is combined with the upper pivot sleeve of the foldable tube unit; the sliding handle includes a sleeve mounted on the outer wall of the upper mounting tube and having a periphery formed with a circular hole; the push rod unit includes a main push rod and an upper push rod, wherein: the upper push rod of the push rod unit is slidably mounted in the upper mounting tube, and is fixed to the sleeve of the sliding handle, the upper push rod of the push rod unit has an upper end formed with an enlarged head formed with a fixing hole, a fixing bolt is extended through the circular hole of the sleeve of the sliding handle, the longitudinal slide slot of the upper mounting tube, and is inserted into the fixing hole of the upper push rod, so that the upper push rod is fixed on the sleeve of the sliding handle to move therewith; and the main push rod of the push rod unit is slidably mounted in the lower mounting tube, and is moved by the upper push rod of the push rod unit, the main push rod of the push rod unit has a mediate portion formed with a catch, a spring is mounted on the main push rod of the push rod unit, and is rested on the catch of the main push rod; the ratchet socket is fixed on the lower end of the lower mounting tube, and has an upper end formed with an annular groove for insertion of the lower end of the lower mounting tube and a lower end formed with a hexagonal mounting recess and provided with a guide tube located in the hexagonal mounting recess; the pawl member is mounted on the ratchet socket, and is formed with an opening, the pawl member has an inner wall formed with an annular step for supporting the ratchet socket, the pawl member has a bottom provided with three upright posts each having a pointed tip, a catch ring is fixed in the opening of the pawl member, and is rested on a top of the ratchet socket; the lower ratchet is secured on a bottom of the opening of the pawl member; and the upper ratchet is mounted in the pawl member and is engaged with the lower ratchet, the upper ratchet has a top formed with a hexagonal mounting section mounted in the hexagonal mounting recess of the ratchet socket.