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US 3,942,208 AGranted
Rotary cleaning device
AssigneeFrank D. Chapman
InventorArchie F. Southard, Jr.
Life of this patent
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AssigneeFrank D. Chapman
InventorArchie F. Southard, Jr.
Estimating the term…
A rotary cleaning device comprising a cup-shaped rotatable base member, a cylindrical resilient mounting received in the cup-shaped member, a plurality of elongated cleaning elements essentially in the form of wood screws mounted in the resilient mounting and extending through and beyond the same. The heads of the screws are positioned between the resilient mounting and the cup-shaped base member. A bolt having an enlarged head extends substantially centrally through the resilient mounting and the base member in a direction opposite from the extension of the cleaning elements. Nuts are mounted on the bolt and engagable with the base member to hold the assembly together in such manner that the heads of the screws are firmly grasped between the resilient mounting and the base member. The portion of the bolt which extends beyond the nuts constitutes a shank which is adapted to engage a rotary chuck for rotating the cleaning device. The points of the screws constitute a primary cleaning means and the threads of the screws constitute a secondary lateral cleaning means.
A rotary cleaning device for removing hard deposits from the combustion chambers of internal combustion engines comprising a rotatable resilient cylindrical mounting, a cup-shaped base member disposed on one side of said resilient mounting and receiving said resilient mounting therein, a bolt passing through said resilient mounting and said base member, said bolt being substantially centrally located with respect to both said resilient mounting and said rotatable base member, said bolt having an enlarged head engaging a side of said resilient mounting opposite from said one side thereof, nut means on said bolt engagable with said rotatable base member for urging said rotatable base member towards said one side of said resilient mounting, said bolt having a portion extending from the head thereof beyond said nut means and constituting a shank means for engagement with a rotary chuck to rotate said resilient mounting, a plurality of rigid and elongated cleaning elements of substantially equal length mounted in said resilient mounting and extending through and beyond said opposite side of said resilient mounting, said cleaning elements being substantially parallel to and circumferentially arranged with respect to said bolt, said cleaning elements having cleaning means at the ends thereof extending beyond said resilient mounting, each cleaning element being provided with an enlarged head means at the end thereof opposite from said cleaning means, said cleaning elements being mounted in said resilient mounting such that the enlarged head means thereof are grasped between said one side of said resilient mounting and said base member, said cleaning means at the ends of said cleaning elements being in the form of pointed ends adapted to clean the exposed surface of a piston within the combustion chamber, said cleaning elements being longitudinally threaded rearwardly from the pointed ends thereof to provide additional lateral cleaning means adapted to clean the cylindrical walls of the combustion chamber.
Dependencies are inferred from the claim text.