# US 10,500,646 B2 · Tube peeling witness groove methods and apparatus

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- Number: US 10,500,646 B2
- Document ID: US10500646B2
- Status: Granted
- Kind: B2
- Application number: 15/137,415
- Filed: 2016-04-25
- Published: 2017-10-26
- Granted: 2019-12-10
- Earliest claimed: 2016-04-25
- Assignees: Georg Fischer Central Plastics LLC
- Applicants: Georg Fischer Central Plastics LLC
- Inventors: Michael D. Smith; Steven W. Vanantwerp
- Web page: https://patentgrep.com/patent/US10500646B2

## CPC

- B23B 5/168: {with guiding devices}
- B08B 1/165: {Scrapers}
- B08B 9/023: Cleaning the external surfaces {(B08B9/021 takes precedence)}
- B26D 3/001: {Cutting tubes longitudinally}
- B26D 3/06: Grooving involving removal of material from the surface of the work
- B26D 3/28: Splitting layers from work; Mutually separating layers by cutting (B26D3/30 takes precedence; Recovery of plastics or other constituents of waste material containing plastics B29B17/00)
- B29C 65/02: by heating, with or without pressure
- B23B 2220/04: Chamferring (B23B2220/28 takes precedence)
- B23B 2220/40: Peeling
- B23B 2226/61: Plastics not otherwise provided for, e.g. nylon
- B29C 65/34: using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
- B29C 66/02241: {Cutting, e.g. by using waterjets, or sawing (using heat B29C66/0246; cutting-off or cutting-out a part of a strip-like or sheet-like material, transferring that part and fixing it to an article B29C69/005)}
- B29C 66/112: {Single lapped joints}
- B29C 66/522: {Joining tubular articles (B29C66/53241 takes precedence)}
- B29C 66/5229: {involving the use of a socket}
- B29C 66/71: {characterised by the composition of the plastics material of the parts to be joined (welding bar compositions B29C65/125)}
- B29L 2023/001: {Tubular films, sleeves}
- B23B: TURNING; BORING (arrangements for copying or controlling B23Q)
- B08B: CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B26D: CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING (for growing crops or plants A01D, A01G; for fodder or straw A01F; for bulk butter A01J; for dough A21C; slaughtering A22B; for tobacco, cigars or cigarettes A24; marking-out, perforating or making buttonholes A41H25/00; manufacturing footwear A43D; brushmaking A46D; surgery A61B; disintegrating, mincing or shredding in general B02C; cutting wire, making pins or nails B21F, B21G; of the kind used formetal B23; cutting by abrasive fluid jets B24C5/02; hand-held cutting tools B26B; perforating, cutting-out, stamping-out or punching, or severing by means other than cutting B26F; for wood B27; for stone B28D; working of plastics or substances in a plastic state B29; making boxes, cartons, envelopes or bags, of paper or similarly worked materials, e.g. metal foil, B31B; article or web delivery apparatus incorporating cutting or line-perforating devices B65H35/00; for leather or upholstery B68, C14B; for glass C03B; making matches C06F; for peat C10F; for sugar C13B45/00; for textile materials D06H; civil engineering, building, mining, see Section E; for light guides G02B6/25; cutting processed photographic material G03D15/04)
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES

## Abstract

A tube scraping tool comprises: a handle; and a blade, carried by the handle. The tool has first and second laterally spaced apart portions for engaging the tube outer diameter (OD) surface during a drawing of the tool along the tube. The blade has a cutting edge trailing the first and second portions during the drawing and laterally between the first and second portions.

## Claims

### Claim 1

A tube scraping tool comprising:
a handle; and
a blade, carried by the handle,
wherein:
the tool has first and second laterally spaced apart portions for engaging the tube outer diameter (OD) surface during a drawing of the tool along the tube, wherein the underside of the handle is formed of a generally channel-like section having first and second side rails and having a base surface;
the first and second portions are respective first and second leading portions of the respective first and second side rails;
the first and second side rails have respective first and second trailing portions;
the blade has a cutting edge positioned to trail the first and second leading portions during the drawing and laterally between the first and second side rails; and
the first and second leading portions are higher than the first and second trailing portions.

### Claim 2 (depends on 1)

The tube scraping tool of claim 1 wherein:
the blade has a passageway for passing a curl of removed material.

### Claim 3 (depends on 2)

The tube scraping tool of claim 2 wherein:
the cutting edge protrudes beyond a remaining portion of the blade at an inlet to the passageway by a height of at least 0.10 mm.

### Claim 4 (depends on 3)

The tube scraping tool of claim 3 wherein:
the height is 0.10 mm to 0.20 mm.

### Claim 5 (depends on 1)

The tube scraping tool of claim 1 wherein:
the blade is steel.

### Claim 6 (depends on 1)

The tool of claim 1 wherein:
the blade is mounted to the handle via an axle.

### Claim 7 (depends on 6)

The tool of claim 6 wherein:
the axle provides the blade with a restricted non-zero rotational range.

### Claim 8 (depends on 7)

The tool of claim 7 wherein:
the restricted non-zero rotational range is at least 0.5°.

### Claim 9 (depends on 1)

The tool of claim 1 wherein:
the handle has a compartment partially receiving the blade.