Patent US1092070A successfully refreshed from Google Patents.
Patent US3618654A successfully refreshed from Google Patents.
US3618654A
Expired / Lapsed
US
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High-speed cutting blade
Assignee: Bandag Licensing Corp
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Filing: 1969-08-28
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Granted: 1971-11-09
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Expires: 1989-08-28
Abstract
Abstract A blade for cutting plastic material such as tire stock, having a body of steel with a flat back surface with a segmental channel in one edge containing a ring of tungsten carbide or the like ground flush with the steel body on one side and projecting outwardly so that it is exposed on both sides and terminates in a circular cutting edge.
Inventors
- 👤 Forrest Clayton Meserve
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:38
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/52; B29D30/68; Y; Y10; Y10T; Y10T407/00; Y10T407/26; Y10T407/28; Y10T83/00; Y10T83/929; Y10T83/9372; Y10T83/9391
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
58 words
A machine for siping tire stock or the like having a threaded feed drum and presser roll cooperating to advance the stock between them, in combination with a helical knife having an enlarged cutting end of hard metal and being mounted in the feed drum with a hollow ground surface disposed on the entrant side of the drum.
Claim 2
Dependent Claim
58 words
A machine for siping tire stock or the like having a threaded feed drum and presser roll cooperating to advance the stock between them, in combination with a helical knife having an enlarged cutting end of hard metal and being mounted in the feed drum with a hollow ground surface disposed on the entrant side of the drum.
Claim 3
Dependent Claim
49 words
A machine for siping tire stock as defined in claim 1 wherein the buttress thread of the feed drum is defined on one side by a smooth radial surface which is arranged in contact with the entrant side of the drum and has an enlarged square cutting end portion.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |