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US 2011/0297244 A1Published application
Universal hole cutter
OwnerYingen Zhanginventor
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OwnerYingen Zhanginventor
Estimating the term…
The present invention discloses a universal hole cutter in the field of mechanics, comprising an oil pump body, an oil cylinder and an oil storage chamber, in which the oil pump body could be fixedly connected with the oil storage chamber and the oil paths thereof could be communicated with each other. A pressure mechanism could be provided on the oil pump body for pressing the power oil within the oil storage chamber into the oil cylinder. The oil cylinder could be fixedly threaded with a pipe joint communicating with the internal cavity of the oil cylinder, and the pipe joint could be communicated with the oil pump body through a rigid movable linkage mechanism which could rotate the oil cylinder with respect to the oil pump body. Compared to the prior art, in the universal hole cutter thus described, the thread connection of the pipe joint and the oil cylinder is reliable and convenient. Furthermore, no welding site exists between the pipe joint and the oil cylinder, which makes a tidy connection and an aesthetic appearance of the complete hole cutter. The universal hole cutter tends not to have a blocking defect and has a good reliability in use.
An universal hole cutter, comprising an oil pump body (2), an oil cylinder (1) and an oil storage chamber (3), in which the oil pump body (2) could be fixedly connected with the oil storage chamber (3) and the oil paths thereof could be communicated with each other, a pressure mechanism could be provided on the oil pump body (2) for pressing the power oil within the oil storage chamber (3) into the oil cylinder (1), wherein the oil cylinder (1) could be fixedly threaded with a pipe joint (5) communicating with the internal cavity of the oil cylinder, and the pipe joint (5) could be communicated with the oil pump body (2) through a rigid movable linkage mechanism which could rotate the oil cylinder (1) with respect to the oil pump body (2).
The universal hole cutter as claimed in 5, wherein a projected stopper (5a) could be set on the side of said pipe joint (5), and a seal gasket (6) could be positioned on the pipe joint (5) and tightly pressed between the stopper (5a) and the connection piece (1a).
Dependencies are inferred from the claim text.