# US 6,626,616 B2 · Tapping tool for PVC pipes and fittings

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- Number: US 6,626,616 B2
- Document ID: US6626616B2
- Status: Granted
- Kind: B2
- Application number: 09/941,025
- Filed: 2001-08-28
- Published: 2003-03-06
- Granted: 2003-09-30
- Earliest claimed: 2001-08-28
- Inventors: John Costa
- Web page: https://patentgrep.com/patent/US6626616B2

## CPC

- B23G 9/009: {Thread cleaning or repairing}
- B23G 5/06: Taps (chucks therefor B23B31/00)
- B23G 2200/28: Threading tools having a conical form
- B23G 2225/40: Plastics not otherwise provided for
- Y10T 408/65: Means to drive tool
- Y10T 408/89: Tool or Tool with support
- Y10T 408/9048: Extending outwardly from tool-axis
- B23G: THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH (making helical grooves by turning B23B5/48, by milling B23C3/32, by forging, pressing, or hammering B21K1/56, by grinding B24B19/02; arrangements for copying or controlling B23Q; thread-forming by corrugating tubes B21D15/04, by rolling B21H3/02)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A tapping tool for repairing damaged threads on PVC pipe and PVC pipe fittings (e.g. T-connectors, elbows, etc.) includes an elongate shaft with a handle member fixed to a proximal end and a head fixed to an opposite distal end. A threaded tap formed of hardened steel is positioned and disposed on the head for forced, threaded engagement with the threads of the PVC pipe or fitting. Manual rotation of the handle serves to advance and withdraw the head along the threads of the PVC pipe or fitting as the tap cuts and reshapes damaged threads, thereby restoring the threads of the PVC pipe or fitting to a uniform, functional condition.

## Claims

### Claim 1

A tool for repairing damaged threads on PVC pipe and PVC pipe fittings comprising:
an elongate shaft having a proximal end zone and an opposite distal end zone;
a handle fixed on said proximal end zone;
a head fixed on said distal end zone;
said elongate shaft, said handle and said head being fixed in rigid non-moving position relative to one another as in integral, one-piece unit;
said head including a thread tap defined by a cylindrical wall terminating at an annular rim and surrounding a hollow interior, and said cylindrical wall having an outer circumferential surface formed with threads for forced threaded engagement with the damaged threads of the PVC pipe and PVC pipe fittings and said thread tap on said head being structured and disposed to cut and reshape the damaged threads upon advancement and withdrawal of said head relative to the damaged threads by manually rotating the handle and thereby restoring the damaged threads to an operable condition; and
said head further including a plurality of axial slots cut through said cylindrical wall, in communication with said hollow interior, and extending from said annular rim and towards said handle along at least a portion of a length of said head measured between said annular rim and said distal end zone of said shaft, said plurality of axial slots allowing yielding inward movement of said cylindrical wall towards said hollow interior in response to inwardly directed radial forces upon advancement of said thread tap of said head along the damaged threads of the PVC pipe and PVC pipe fittings.

### Claim 2 (depends on 1)

The tool as recited in claim 1 wherein said handle is perpendicular relative to said shaft.

### Claim 3 (depends on 1)

The tool as recited in claim 1 wherein said thread tap is formed of hardened steel.