CA2271576A1 - A perforating blade and signature - Google Patents
A perforating blade and signatureInfo
- Publication number
- CA2271576A1 CA2271576A1 CA002271576A CA2271576A CA2271576A1 CA 2271576 A1 CA2271576 A1 CA 2271576A1 CA 002271576 A CA002271576 A CA 002271576A CA 2271576 A CA2271576 A CA 2271576A CA 2271576 A1 CA2271576 A1 CA 2271576A1
- Authority
- CA
- Canada
- Prior art keywords
- angled
- blade
- cutting edge
- signature
- sections
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
Abstract
A perforating blade (10), and signature (32) produced therewith, having a unitary blade (12) that is very narrow in width in proportion to its length, with a cutting edge (16) along one longitudinal side. The cutting edge (16) comprises a combination of a number of spaced-apart straight (22) and angled (20) sections arranged so that the angled sections (20) angle inwardly toward a center point (18) on the perforating blade and along a single side of the cutting edge only. Since the angled sections (20) are all angled to the same side of the blade, the resulting fold line (26) has cuts only on one side (29) thereof. The angled cuts result in ties (28) that twist easily, and that, therefore, result in fold lines (26) that fold cleanly without gusseting or binding.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/303,946 | 1994-09-09 | ||
US08/303,946 US5524930A (en) | 1994-09-09 | 1994-09-09 | Perforating blade and signature |
CA002199118A CA2199118C (en) | 1994-09-09 | 1995-09-07 | A perforating blade and signature |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002199118A Division CA2199118C (en) | 1994-09-09 | 1995-09-07 | A perforating blade and signature |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2271576A1 true CA2271576A1 (en) | 1996-03-14 |
CA2271576C CA2271576C (en) | 2003-08-26 |
Family
ID=27805848
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002271576A Expired - Fee Related CA2271576C (en) | 1994-09-09 | 1995-09-07 | A perforating blade and signature |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2271576C (en) |
-
1995
- 1995-09-07 CA CA002271576A patent/CA2271576C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA2271576C (en) | 2003-08-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |
Effective date: 20130909 |