Patent US3850069A successfully refreshed from Google Patents.
US3850069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mounting of rotary split slitting knives
Assignee: S&S Corrugated Paper Machinery Co Inc
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Filing: 1974-01-21
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Granted: 1974-11-26
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Expires: 1994-01-21
Abstract
Abstract A split rotary slitting knife removably mounted to a split annular head is positioned so that the diametrically opposed joints between head portions are angularly offset from the joints where the cutting portions of the blade sections abut. The ends of each of the blade sections extend across both of the head joints for proper alignment of the blade sections.
Inventors
- 👤 L Saunders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:41
CPC Classifications
B; B26; B26D; B26D7/00; B26D7/26; B26D7/2614; B26D7/2621; B23; B23D; B23D35/00; B23D35/002; B23D35/004; Y; Y10; Y10T; Y10T83/00; Y10T83/929; Y10T83/9372; Y10T83/9377; Y10T83/9396; Y10T83/9401; Y10T83/9457; Y10T83/9464
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
145 words
An assembly including an annular head selectively mountable along the length of a drive shaft and an annular blade removably mounted to said head; said head including first and second separable arcuate portions mated at the ends thereof at first and second head joints; said blade including a circular cutting edge along the outer edge thereof; said blade also including first and second arcuate sections having, respectively, first and second parts of said cutting edge mated at tHe ends thereof at first and second blade joints whereat the ends of the cutting edge parts abut; said blade joints being angularly displaced from said head joints; in the vicinity of each of said blade joints one of said blade sections having an end projection bridging the head joint adjacent thereto, and the other of said blade sections having an end notch to receive the end projection.
Claim 2
Dependent Claim
145 words
An assembly including an annular head selectively mountable along the length of a drive shaft and an annular blade removably mounted to said head; said head including first and second separable arcuate portions mated at the ends thereof at first and second head joints; said blade including a circular cutting edge along the outer edge thereof; said blade also including first and second arcuate sections having, respectively, first and second parts of said cutting edge mated at tHe ends thereof at first and second blade joints whereat the ends of the cutting edge parts abut; said blade joints being angularly displaced from said head joints; in the vicinity of each of said blade joints one of said blade sections having an end projection bridging the head joint adjacent thereto, and the other of said blade sections having an end notch to receive the end projection.
Claim 3
Dependent Claim
19 words
An assembly as set forth in claim 1 in which the head joints are located at diametrically opposed positions.
Claim 4
Dependent Claim
32 words
An assembly as set forth in claim 2 in which both of the end projections are provided by said first section, and both of said notches are provided by said second section.
Claim 5
Dependent Claim
28 words
An assembly as set forth in claim 2 in which the blade joints are both positioned on the same side of a line extending between the head joints.
Claim 6
Dependent Claim
32 words
An assembly as set forth in claim 4 in which both of the end projections are provided by said first section, and both of said notches are provided by said second section.
Claim 7
Dependent Claim
20 words
An assembly as set forth in claim 5 in which the blade abuts a generally flat surface of the head.
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) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |