A plastic housing has a front shell with inwardly protruding bristles of an exterior wire brush, and a rear shell which retractably receives the outwardly protruding bristles of an interior wire brush. The interior brush is mounted to a shaft which engages the housing, and which is driven by a motor
A plastic housing has a front shell with inwardly protruding bristles of an exterior wire brush, and a rear shell which retractably receives the outwardly protruding bristles of an interior wire brush. The interior brush is mounted to a shaft which engages the housing, and which is driven by a motor, such as by a power drill. A ring-like deburring element is mounted to the shell between the front shell and the rear shell, and has an inwardly and frontwardly protruding generally frustoconical first wall forming a deburring element which defines a central opening through which the interior brush may be projected and retracted. The first wall may be planar segments, or may have a circular cross section. The deburring element serves to position a pipe for burnishing by the exterior brush, and also deburrs the end of the inserted pipe.
대표청구항▼
1. A pipe tool comprising:a housing having a rear shell, and a front shell which extends frontwardly from the rear shell, portions of the rear shell defining a rear opening;an interior brush mounted to a shaft, and having a plurality of radially outwardly protruding bristles, the shaft extending rea
1. A pipe tool comprising:a housing having a rear shell, and a front shell which extends frontwardly from the rear shell, portions of the rear shell defining a rear opening;an interior brush mounted to a shaft, and having a plurality of radially outwardly protruding bristles, the shaft extending rearwardly through the housing rear opening, the housing being movable axially along the shaft to alternatively position the interior brush in a retracted position retained within the rear shell, and an active position forward of the front shell;an exterior brush mounted within the housing front shell, and having a plurality of bristles which extend inwardly from the front shell; anda deburring element positioned between the front shell and the rear shell, and having a central opening, wherein bristles of the interior brush pass through the deburring element central opening when the interior brush is moved between the retracted position and the active position, the deburring element having a first wall which protrudes frontwardly from a base ring which extends substantially within a plane and radially inwardly, and the first wall forming a front edge which defines the deburring element central opening.2. The tool of claim 1 wherein the first wall has substantially a circular cross section.3. The tool of claim 1 wherein the first wall is comprised of a plurality of generally planar segments.4. The tool of claim 1 wherein the deburring element first wall extends from the base ring at an angle of about 45° to about 80°.5. The tool of claim 4 wherein the deburring element first wall extends from the base ring at an angle of about 70°.6. A pipe tool of the type having a housing with a rear shell, and a front shell which extends frontwardly from the rear shell, a radially outwardly extending flange being defined between the front shell and the rear shell, and an interior brush mounted to a shaft, and having a plurality of radially outwardly protruding bristles, the shaft extending rearwardly through the housing, the housing being movable axially along the shaft to alternatively position the interior brush in a retracted position retained within the rear shell, and an active position forward of the front shell, and an exterior brush mounted within the housing front shell, and having a plurality of bristles which extend inwardly from the front shell, wherein the improvement comprises:a deburring element having a base ring which extends substantially within a plane which is positioned adjacent the flange, and having a central opening, wherein bristles of the interior brush pass through the deburring element central opening when the interior brush is moved between the retracted position and the active position, the deburring element having a first wall which protrudes frontwardly from the base ring and radially inwardly from the base ring, and the first wall has a front edge which defines the deburring element central opening.7. The tool of claim 6 wherein the first wall has a substantially circular cross section.8. The tool of claim 6 wherein the first wall is comprised of a plurality of generally planar segments.9. The deburring element of claim 8 wherein each planar segment of the first wall has a first edge which adjoins the base ring, and two spaced second edges which extend frontwardly from the base ring, wherein each planar segment second edge extends along the second edge of an adjoining planar segment.10. The tool of claim 6 wherein the first wall extends from the base ring at an angle of about 45° to about 80°.11. The tool of claim 10 wherein the deburring element first wall extends from the base ring at an angle of about 70°.12. A pipe tool comprising:a housing having a front shell;an exterior brush mounted within the housing front shell, and having a plurality of bristles which extend inwardly from the front shell; anda deburring element positioned within the housing, and having a central opening, the deburring element having a base ring which extends substantially within a plane, and a first wall which protrudes frontwardly from the base ring and radially inwardly from the front shell, the first wall forming a front edge which defines the deburring element central opening, the base ring extending radially outwardly from the first wall, wherein the deburring element first wall extends from the base ring at an angle of about 45° to about 80°.13. The tool of claim 12 wherein the first wall is comprised of a plurality of generally planar segments.14. The deburring element of claim 13 wherein each planar segment of the first wall has a first edge which adjoins the base ring, and two spaced second edges which extend frontwardly from the base ring, wherein each planar segment second edge extends along the second edge of an adjoining planar segment.15. A deburring element for a pipe cleaner comprising:a base ring extending substantially within a plane,a first wall which protrudes frontwardly and inwardly from the base ring, to define a central opening, the first wall being comprised of a plurality of planar segments which extend from the base ring at an angle of about 45° to about 80°, wherein each planar segment of the first wall has a first edge which adjoins the base ring, and two spaced second edges which extend frontwardly from the base ring, wherein each planar segment second edge extends along the second edge of an adjoining planar segment.16. A pipe tool comprising:a housing having a front shell, and a rearward flange within the front shell;a keying member within the housing front shell which extends radially inwardly from the front shell, and portions of the front shell extend frontwardly from the front shell rearward flange;an exterior brush mounted within the housing front shell, and having a plurality of bristles which extend inwardly from the front shell; anda deburring element positioned within the housing, and having a central opening, the deburring element having a base ring which engages the rearward flange, and a first wall which protrudes frontwardly from the base ring and radially inwardly from the front shell, the first wall forming a front edge which defines the deburring element central opening, the deburring element base ring having portions which define a slot through which the keying member protrudes.17. The pipe tool of claim 16 wherein the deburring element first wall is comprised of a plurality of planer segments which extend from the base ring at an angle of about 45° to about 80°.
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이 특허에 인용된 특허 (12)
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