US3595116A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Severing blade with beveled gripping edge
Assignee: Phillips Petroleum Co
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Filing: 1969-08-18
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Granted: 1971-07-27
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Expires: 1989-08-18
Abstract
Abstract Square cuts are obtained in thermoplastic tubing and the like by means of closing cooperating gripping jaws on the tubing, which jaws have a leading cutting edge and an offset gripping edge which slopes back to an outer surface of the blade.
Inventors
- 👤 Dixie E Gilbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:38
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/42; B26; B26D; B26D1/00; B26D1/0006; B26D3/00; B26D3/16; B29C48/00; B29C48/001; B29C48/0022; B26D2001/0053; B26D2001/006; B29C49/78; B29C49/786; B29C2049/7861; B29C2049/7862; B29C2793/00; B29C2793/0027; B29C2793/0081; B29C48/03; B29C48/09; B29C48/10; B29C49/02; B29C49/04; B29C49/0412; B29K; B29K2023/00; B29K2023/04; B29K2023/06; B29K2023/10; B29K2023/12; Y; Y10; Y10T; Y10T83/00; Y10T83/04; Y10T83/0596; Y10T83/283; Y10T83/343; Y10T83/566; Y10T83/5669; Y10T83/748; Y10T83/7487; Y10T83/7573; Y10T83/869; Y10T83/8821; Y10T83/8835
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
80 words
Apparatus for severing a thermoplastic tubular workpiece comprising in combination: a pair of cooperating matching blades, each of said blades having a leading cutting edge, a gripping edge offset slightly back from said cutting edge, a surface sloping back from said gripping edge at an angle of 5*-60* from a plane perpendicular to said gripping edge to an outer surface of said blade; and wherein said gripping edge and cutting edge are spaced apart and separated by a recessed area.
Claim 2
Dependent Claim
80 words
Apparatus for severing a thermoplastic tubular workpiece comprising in combination: a pair of cooperating matching blades, each of said blades having a leading cutting edge, a gripping edge offset slightly back from said cutting edge, a surface sloping back from said gripping edge at an angle of 5*-60* from a plane perpendicular to said gripping edge to an outer surface of said blade; and wherein said gripping edge and cutting edge are spaced apart and separated by a recessed area.
Claim 3
Dependent Claim
20 words
An apparatus according to claim 1 wherein said surface slopes back from said gripping edge at an angle of 10*-30*.
Claim 4
Dependent Claim
24 words
An apparatus according to claim 1 wherein said matching gripping edges are separated by a distance of 13-50 mils when in fully closed position.
Claim 5
Dependent Claim
40 words
An apparatus according to claim 1 wherein a surfaces of said blade adjacent said cutting edge on a side opposite from said gripping edge forms an angle with a plane perpendicular to said cutting edge of between 40* and 60*.
Claim 6
Dependent Claim
96 words
An apparatus according to claim 1 comprising in addition a second gripping edge disposed on the opposite side of said cutting edge, said second gripping edge being offset slightly back from said cutting edge, said blade having a surface sloping back from said second gripping edge at an angle of 560* from a plane perpendicular to said gripping edge to a second outer surface of said blade, said second outer surface being spaced parallel to said first outer surface, said second gripping edge being spaced apart from said cutting edge and separated by a recessed area.
Claim 7
Dependent Claim
12 words
An apparatus according to claim 1 wherein said recesses area is curved.
Claim 8
Dependent Claim
67 words
An apparatus according to claim 1 comprising in addition a second gripping edge on the opposite side of said cutting edge from said first gripping edge, said second gripping edge being offset slightly back from said cutting edge, and separated therefrom by a recessed area, said second gripping edge being flush with a second surface of said blade, said second surface being parallel to said first surface.
Claim 9
Dependent Claim
52 words
An apparatus according to claim 1 comprising in addition, means to move said blades into and out of engagement, said means having stop means to stop forward movement of said blades at a point where said cutting edge of each blade projects 1 to 2 mils past a centerline between said blades.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |