# US 4,391,175 A · Perforating device especially adapted for use with printing machines

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- Number: US 4,391,175 A
- Document ID: US4391175A
- Status: Granted
- Kind: A
- Application number: 06/247,996
- Filed: 1981-03-26
- Granted: 1983-07-05
- Earliest claimed: 1980-03-27
- Inventors: Steve Christian
- Web page: https://patentgrep.com/patent/US4391175A

## CPC

- B41G 7/00: Auxiliary perforating apparatus associated with printing devices (apparatus or machines for carrying-out printing operations combined with operations other than perforating B41F19/00)
- Y10T 83/929: Tool or tool with support
- Y10T 83/9408: Spaced cut forming tool
- Y10T 83/9464: For rotary tool
- B41G: APPARATUS FOR BRONZE PRINTING, LINE PRINTING, OR FOR BORDERING OR EDGING SHEETS OR LIKE ARTICLES; AUXILIARY FOR PERFORATING IN CONJUNCTION WITH PRINTING (perforating in general B26D; production of decorations B44C; perforating in conjunction with sheet or web delivery B65H35/00; folding or unfolding thin material, e.g. sheets, webs, B65H45/00, B65H47/00)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

The invention relates to a perforating device or similar cutting means especially adapted for use with printing machines such as those of the offset kind. The perforating device herein comprises a rigid, thin metal plate which presents, in protrusion, on one of its two faces, at least one cutting or perforating element, a layer of adhesive material applied to the side of said thin metal plate opposite said cutting or perforating element, said adhesive layer capable of being protected by a protective strip, and a double faced self-adhesive tape adhering upon one of its faces to the side of said thin metal plate adjacent to said cutting or perforating element, the other face of the double faced self-adhesive tape capable of being protected by a protective strip.

## Claims

### Claim 1

Perforating device or similar means, especially adapted for use with printing machines such as offset machines which comprises:
(a) a rigid, thin metallic plate in the form of a strip, which presents, in protrusion, on one of its two faces, at least one cutting or perforating element;
(b) a layer of adhesive material applied upon the side of thin metal plate opposite said cutting or perforating element, said adhesive layer capable of being protected by a protective strip which is removed at the moment of use; and
(c) a double faced self-adhesive tape adhering upon one of its faces, upon the side of said thin metal plate adjacent to said cutting or perforating element, the other face of the double faced self-adhesive tape capable of being protected by a protective strip which is removed at the moment of use.

### Claim 2 (depends on 1)

Perforating device according to claim 1 wherein said thin metal plate comprises a steel strip having a toothed or sharp raised edge extending perpendicularly to the plane of said strip.

### Claim 3 (depends on 1)

The perforating device of claim 1, in which the thin metallic plate is fabricated of steel.