Patent US3752027A successfully refreshed from Google Patents.
US3752027A
Expired / Lapsed
US
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Cutting tool for notching sheet material
Assignee: Gerber Technology LLC
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Filing: 1971-06-01
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Granted: 1973-08-14
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Expires: 1991-06-01
Abstract
Abstract A notch cutting tool is provided for use with apparatus for cutting and notching layups of sheet material of the type which includes a layup support means and at least one cutting head mounted for movement in two coordinate directions relative to the layup. The notch cutting tool is driven from the cutting head and is adapted to move in a plunging fashion relative to the layup to form a notch or cut therein serving as an index mark on pieces cut from the layup by another cutting tool.
Inventors
- 👤 H Gerber
- 👤 D Pearl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:58
CPC Classifications
C; C07; C07D; C07D319/00; C07D319/04; C07D319/08; B; B26; B26D; B26D3/00; B26D3/12; B26F; B26F1/00; B26F1/38; B26F1/3806; B26F1/3813; B26F1/382; C07D303/00; C07D303/02; C07D303/38; C07D303/40; C07D317/00; C07D317/08; C07D317/10; C07D317/32; C07D317/34; D; D06; D06M; D06M13/00; D06M13/10; D06M13/224; D06M13/236; D06M15/00; D06M15/19; D06M15/21; D06M15/263; D06M15/277; Y; Y10; Y10S; Y10S83/00; Y10S83/917; Y10S83/929; Y10S83/936; Y10S83/939; Y10S83/94; Y10S83/941; Y10T; Y10T83/00; Y10T83/869; Y10T83/8821; Y10T83/929; Y10T83/9411; Y10T83/9442; Y10T83/97
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
116 words
A cutting tool for use in an apparatus for automatically cutting layups of sheet material and particularly for forming notches in such a layup, said tool comprising an elongated blade having upper and lower ends and adapted at its upper end for connection to a notching head which orients said blade with its longitudinal axis generally perpendicular to a layup to be cut and which reciprocates said blade along its longitudinal axis to plunge it into and to withdraw it from said layup, said blade having a first longitudinal cutting edge along a first side thereof, and a second generally downwardly facing cutting edge on its lower end, said blade being made substantially of tungsten carbide.
Claim 2
Dependent Claim
116 words
A cutting tool for use in an apparatus for automatically cutting layups of sheet material and particularly for forming notches in such a layup, said tool comprising an elongated blade having upper and lower ends and adapted at its upper end for connection to a notching head which orients said blade with its longitudinal axis generally perpendicular to a layup to be cut and which reciprocates said blade along its longitudinal axis to plunge it into and to withdraw it from said layup, said blade having a first longitudinal cutting edge along a first side thereof, and a second generally downwardly facing cutting edge on its lower end, said blade being made substantially of tungsten carbide.
Claim 3
Dependent Claim
49 words
A cutting tool as defined in claim 1 further characterized by said second edge being inclined relative to said longitudinal axis of said blade, and a third longitudinal cutting edge extending along a side thereof diametrically opposite said first side, said second and third edges intersecting at a point.
Claim 4
Dependent Claim
22 words
A cutting tool as defined in claim 1 further characterized by said blade being at least partially coated with a low-friction plastic.
Claim 5
Dependent Claim
16 words
A cutting tool as defined in claim 3 further characterized by said low-friction plastic being polytetrafluoroethylene.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |