US3559705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chipper knife and knife mounting for drum type wood chipper
Assignee: Individual
•
Filing: 1968-09-11
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Granted: 1971-02-02
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Expires: 1988-09-11
Abstract
Abstract A simplified and secure mounting for a reversible symmetrical knife for a drum type wood chipper. The knife produces a controlled size chip as required by the paper industry.
Inventors
- 👤 Frank Louis Salzmann Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:18
CPC Classifications
B; B27; B27L; B27L11/00; B27L11/005
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
120 words
In a drum type rotary wood chipper, a drum wall having a clear clearance opening, a knife holder including a head projecting within the clearance opening and an anchoring portion resting upon the interior face of the drum, means for releasably securing securing said anchoring position to the drum, a clamping element disposed in opposed relationship to an inclined surface of the head, a symmetrical end reversible chipper knife engaged between the inclined face of the head and an opposed face to the clamping element, and means rigidly and releasably securing the clamping element, and to the holder in clamping relationship with the chipper knife, said knife projecting diagonally through said opening and beyond the exterior surface of said drum.
Claim 2
Dependent Claim
120 words
In a drum type rotary wood chipper, a drum wall having a clear clearance opening, a knife holder including a head projecting within the clearance opening and an anchoring portion resting upon the interior face of the drum, means for releasably securing securing said anchoring position to the drum, a clamping element disposed in opposed relationship to an inclined surface of the head, a symmetrical end reversible chipper knife engaged between the inclined face of the head and an opposed face to the clamping element, and means rigidly and releasably securing the clamping element, and to the holder in clamping relationship with the chipper knife, said knife projecting diagonally through said opening and beyond the exterior surface of said drum.
Claim 3
Dependent Claim
40 words
The structure of claim 1, and wherein the clearance opening has a locator notch and a part of said head of the holder is engaged lockingly within the lc locator notch so that the holder cannot pivot upon the drum.
Claim 4
Dependent Claim
51 words
The structure of claim 1, and wherein said head has a diagonally inclined serrated face within the clearance opening and said knife has serrations on one face thereof adjustably engaging the serrations of the head whereby the extent of projection of the knife exteriorly of the drum wall may be adjusted.
Claim 5
Dependent Claim
22 words
The structure of claim 2, wherein said first-named means is a single screw element attaching said anchoring portion to said drum wall.
Claim 6
Dependent Claim
53 words
The structure of claim 2 wherein said head is a tapering element having its wider heel portion engaging within said locator notch and including an inclined surface which extends diagonally of the clearance opening and is serrated, said chipper knife having a coacting serrated surface engagement with the serrated surface of the head.
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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |