Variable gear ratio ratchet
First Claim
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1. A driving tool comprising:
- a) a housing having an open end;
b) a shaft operably connected to the housing and disposed at least partially within the open end;
c) a gear assembly at least partially disposed within the housing and engaged with the shaft;
d) a gear ratio switching mechanism engaged with the gear assembly, the switching mechanism including a collar slidably connected to the gear assembly, wherein the collar includes at least one ridge that is selectively engageable with the gear assembly and wherein the gear assembly includes a ring gear body having an exterior surface including at least one groove that is selectively engageable with the at least one ridge on the collar.
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Abstract
This invention relates to a fastener driving device including a variable ratio gear mechanism that enables the ratio of the rotation of the handle to the rotation of a driving bit extending from the handle to be varied to allow the bit to rotate at different speeds from the handle. The device includes a gear mechanism disposed within a housing for the device that includes a locking member. The locking member can be engaged with the gear mechanism to lock the gear mechanism in a configuration for a 1:1 gear ratio. The locking member can be moved with regard to the gear mechanism to provide an increased gear ratio for the gear mechanism when desired.
12 Citations
7 Claims
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1. A driving tool comprising:
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a) a housing having an open end; b) a shaft operably connected to the housing and disposed at least partially within the open end; c) a gear assembly at least partially disposed within the housing and engaged with the shaft; d) a gear ratio switching mechanism engaged with the gear assembly, the switching mechanism including a collar slidably connected to the gear assembly, wherein the collar includes at least one ridge that is selectively engageable with the gear assembly and wherein the gear assembly includes a ring gear body having an exterior surface including at least one groove that is selectively engageable with the at least one ridge on the collar. - View Dependent Claims (2, 3, 4, 5)
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6. A driving tool comprising:
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a) a housing having an open end; b) a shaft operably connected to the housing and disposed at least partially within the open end; c) a gear assembly at least partially disposed within the housing and engaged with the shaft; d) a gear ratio switching mechanism engaged with the gear assembly, the switching mechanism including a collar slidably connected to the gear assembly, wherein the gear assembly comprises; i) a sun gear disposed on the shaft; ii) a planetary gear body having at least one planetary gear rotatably mounted thereon, the at least one planetary gear engaged with the sun in gear wherein the shaft extends through the planetary gear body; iii) a ring gear engaged with the at least one planetary gear opposite the sun gear; and iv) at least one bearing disposed between and engaged with the planetary gear body and the ring gear. - View Dependent Claims (7)
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Specification