Power valve wrench
OwnerJames L. Sorterinventor
Life of this patent
Estimating the term…
Abstract
A power valve wrench includes a power drive assembly having a motor and a speed reduction device driving an annulus which defines a large center opening and a plurality of lugs or recesses on the interior wall of the annulus. The opening in the annulus receives a drive member having complementary lugs or recesses. The drive member, in turn defines a concentric polygonal opening which may be square, hexagonal, octagonal or other regular polygon shape which receives a complementarily configured stanchion of a valve handwheel drive member. A selection of valve handwheel drive members having 4, 6, 8, 10 or 12 slots may be utilized with the power valve wrench. A safety or retaining ring removably attached to the valve handwheel drive member retains the member on a valve handwheel.
Claims22
A power wrench assembly for handwheels comprising, in combination,
- a drive member defining an interior adapted to receive a portion of a handwheel and sidewall having a plurality of slots adapted to receive spokes of such handwheel, a stanchion including engageable flats for receiving rotational force and an opening extending through said stanchion,
- a retaining ring removably attached to said sidewall and adapted to retain such spokes in said slots, and
- a power drive assembly having an electric motor driving a worm gear, a circular collar having gear teeth disposed thereon engageable by said worm gear and a coupling member disposed between said circular collar and said stanchion for rotatably driving said stanchion.
A power wrench assembly for valve handwheels comprising, in combination,
- a drive socket defining an interior for receiving a portion of a valve handwheel and having a sidewall defining a plurality of slots adapted to receive spokes of such valve handwheel, a stanchion member for receiving rotational force and an aperture extending through said drive member,
- a retaining ring adapted to retain such spokes in said slots and means for releasably attaching said retaining ring to said sidewall, and
- a power drive assembly having an electric motor driving a worm gear, a circular collar having gear teeth engageable by said worm gear and a coupling member disposed between said circular collar and said stanchion member for rotatably driving said drive socket.
A power wrench assembly for handwheels comprising, in combination,
- a drive socket having an open face and a sidewall defining a plurality of slots adapted to receive spokes of a handwheel, a engageable member for receiving rotational force and a passageway extending through said engageable member,
- a retaining ring for disposition on said sidewall adjacent said slots and means for releasably attaching said ring to said sidewall, and
- a power drive assembly having an electric motor driving a worm gear output, a circular collar having gear teeth engageable by said worm gear and a coupling member operably disposed between said circular collar and said engageable member for engaging and driving said engageable member.
Dependencies are inferred from the claim text.