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US 2002/0170392 A1Published application
Ratchel tool having longitudinally movable pawls
OwnerSu Shia Cheninventor
Life of this patent
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Abstract
A ratchet tool includes a seat rotatably secured to a housing and having a number of teeth facing toward the housing, the housing having two channels for slidably receiving two pawls which are biased to engage with the teeth of the seat, and an actuator rotated by a control ferrule to selectively disengage the pawls from the teeth of the seat to control the rotational direction of the seat by the housing. A driving stem is engaged in the seat and has an engaging hole for changeably receiving a tool member. A rod may be biased to secure the tool member to the driving stem.
Claims15
A ratchet tool comprising:
- a housing including a pair of longitudinal channels formed therein,
- a seat rotatably secured to said housing and including a first end facing toward said housing and having a plurality of teeth formed therein, said seat including a cylindrical member extended therefrom and having an aperture formed therein,
- a driving stem engaged in aperture of said cylindrical member, said driving stem including an engaging hole formed therein,
- a tool member received in said engaging hole of said driving stem,
- means for detachably securing said tool member to said driving stem,
- a pair of pawls slidably engaged in said longitudinal channels of said housing respectively,
- means for biasing said pawls to move longitudinally relative to said housing to engage with said teeth of said seat, and
- means for selectively disengaging said pawls from said teeth of said seat to control a rotational direction of said seat by said housing.
5 more elements
Dependencies are inferred from the claim text.