Water main scraper

• US 4,912,799 A
• Filed: 01/30/1989
• Issued: 04/03/1990
• Est. Priority Date: 01/30/1989
• Status: Expired due to Fees

• Current Assignee: Lewis E. Coleman Jr
• Original Assignee: Lewis E. Coleman Jr
• Inventors: Coleman, Lewis E. Jr.
• Primary Examiner(s): ROBERTS JR, EDWARD
• Application Number:
  US07/303,119
• Time in Patent Office: 428 Days
• Field of Search: 15/104.04, 15/236.01, 15/236.05, 15/236.06, 15/236.08, 29/81 F, 29/81 E, 29/81 G
• US Class Current: 15/104.04
• CPC Class Codes: B08B 9/023 Cleaning the external surface B08B9/021 takes precedence
• CPC Class Codes: Y10T 29/4506 for hollow workpiece
• CPC Class Codes: Y10T 29/4556 Chainer
• CPC Class Codes: Y10T 29/4561 Scraper or scalper

Abstract

A scraper for use in repairing underground pipe breaks consisting of two parallel chains carrying transverse square scraper rods.

Claims

1. A pipe scraping assembly, comprising:

two spaced flexible elongated operator sections each having a handle at one end thereof, a scraper section interconnecting the other ends of the operator sections including two flexible parallel members, and a plurality of scraper members extending transverse to and fixed to the parallel members.

2. A pipe scraping assembly as defined in claim 1, wherein the parallel members each include a chain having universally interconnected links.

3. A pipe scraping assembly as defined in claim 1, wherein the operator sections each include a chain having universally interconnected links.

4. A pipe scraping assembly, comprising:

a scraper section including two parallel chains each having a plurality of interconnecting links, said scraper section having a length at least half the circumference of the pipe to be scraped, a plurality of scrapers fixed to the links of the chains and extending generally transverse thereto, and two operator sections each extending from one end of the scraper section each having a handle at its distal end, whereby the scraper may be wrapped around a pipe and reciprocated in a plane transverse to the pipe direction to scrape foreign material on the surface of the pipe in preparation for break repair.

5. A pipe scraping assembly as defined in claim 4, wherein the scrapers include a plurality of square rods mounted on the links in the scraper section so the rods form a point in a direction perpendicular to the links.

6. A pipe scraping assembly as defined in claim 4, wherein the scrapers include a plurality of short square rods mounted alternately on the two scraper section chains and a plurality of long scraper rods each mounted on both of the scraper section chains.

7. A pipe scraping assembly as defined in claim 4, wherein the handles are formed by steel loops.

8. A pipe scraping assembly, comprising:

a scraper section including two parallel chains each having a plurality of interconnecting links, said section having a length at least half the circumference of the pipe to be scraped, a plurality of scrapers fixed to the links of the chains and extending generally transverse thereto, two operator sections each extending from one end of the scraper section each having a handle at its distal end, whereby the scraper may be wrapped around a pipe and reciprocated in a plane transverse to the pipe direction to scrape foreign material on the surface of the pipe in preparation for break repair, the scrapers including a plurality of short square rods mounted alternately on the two scraper section chains and a plurality of long scraper rods each mounted on both of the scraper section chains, said scrapers being mounted on the scraper section chains so the rods form a point in a direction perpendicular to the links.