초록 ▼

An improved multi-purpose, direct-drive, water-driven rotary tool having improved torque and power. The present invention includes a housing having a central cavity, an impeller with angled, beveled blades around its periphery, a drive shaft connected to a rotatable mounting pad or backing pad that

An improved multi-purpose, direct-drive, water-driven rotary tool having improved torque and power. The present invention includes a housing having a central cavity, an impeller with angled, beveled blades around its periphery, a drive shaft connected to a rotatable mounting pad or backing pad that contains a disk with a grinding or sanding surface that is removably attached thereto. A high pressure water inlet conduit includes a changeable nozzle to allow using the tool with different water sources. The water exiting the nozzle strikes the blades of the impeller, rotating the impeller, which rotates the backing pad and sanding disk. Water is strategically diverted through a bearing mounting plate having holes by a shroud or angular flange having an angular periphery that allows the expended water from the impeller to be efficiently expelled peripherally around the outside of the main cavity of the housing. The device also includes a manually-actuated trigger for the inlet water valve which canbe held at the same time as a D-shaped handle affixed directly on the housing allowing for close, controlled used or with a saddle handle that is pivotal and that allows the user to attach the saddle handle to a long pool-pole to effectively move the device comfortably from a standing position.

대표청구항 ▼

[What is claimed is:] [1.]a substantially annular rigid metal housing having a cylindrical cavity;a drive shaft having a first and second end wherein said first end is centrally mounted for rotation in said metal housing;a water-driven impeller rotatably mounted in said cylindrical cavity, said impe

[What is claimed is:] [1.]a substantially annular rigid metal housing having a cylindrical cavity;a drive shaft having a first and second end wherein said first end is centrally mounted for rotation in said metal housing;a water-driven impeller rotatably mounted in said cylindrical cavity, said impeller having a central hole to allow for said first end of said drive shaft to be inserted therethrough, said impeller comprising a plurality of blades;a substantially elongated annular inlet conduit removably connected at one end to and protruding from said housing and removably connected at a second end to a water supply under high pressure, said inlet conduit including a first nozzle having a nozzle tip in fluid communication with said impeller to rotatably drive said impeller;a cylindrically-shaped dish removably affixed to said housing including a central orifice for said second end of said drive shaft to protrude therethrough;an annular backing pad removably affixed to said second end of said drive shaft to be rotated thereby;a disposable working disk for sanding or grinding;means for attaching said working disk to said backing pad;said dish comprises a support plate having a plurality of apertures disposed on its outer face such that water that is used to drive said impeller is able to flow through the support plate apertures and escape through centrifugal action; anda shroud sized strategically to fit around the periphery of said dish having predetermined spacing between the periphery of said dish, for deflecting said water that is used to drive said impeller away from said backing pad, said shroud having a substantially annular flange around its periphery.