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US 5,179,753 AGranted
Jet thruster with spinner head
OwnerWilliam J. Flaherty, Matthew J. Flahertyinventors
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OwnerWilliam J. Flaherty, Matthew J. Flahertyinventors
Estimating the term…
A jet thruster for attachment to the outlet end of a high-liquid-pressure hose for use, among other things, in clearing drain lines or the like. The jet thruster comprises a body formed of at least hemi-spherical shape about a fore-and-aft axis that is substantially an extension of the hose. The hemi-spherical shape gives the frontal area of rearwardly and radially outwardly sloping configuration over which liquid jets stream in close proximity to that area to augment the forward thrust action against the walls of the drain line which facilitates advance of the thruster through the drain line. Ahead of the frontal area a spinner head is coaxially journalled for rotation via thrust exerted by liquid existing laterally from another jet in the spinner head. The spinner head jet(s) further create forces that are utilized for clearing the drain line of sludge, roots and the like. Further, the spinner head may carry blades or the like for increasing the clearing action of the thruster.
A jet thruster for attachment to the front end of a high-liquid-pressure hose, comprising a body providing substantially a coaxial forward prolongation of the hose, said body having a coaxially forward extension means provided with a coaxial cylindrical bearing surface, said body and extension means including fore-and-aft passage means therethrough for communicative connection to the outlet end of the hose, a spinner head- rotatable on the cylindrical bearing surface, first jet means in communication with the aforesaid passage means and contained at least in part in the spinner head and exiting rearwardly and radially outwardly to direct liquid under pressure over the body so as to create a thrust force tending to advance the body and second jet means in the spinner head and in communication with the passage means and extending in non radial relation to the spinner head and exiting outwardly in such manner as to create a side thrust tending to rotate the spinner head.
The invention according to claim in which means is cooperative between the body and extension means for selectively fixing the position of the extension means relative to the body.
Dependencies are inferred from the claim text.