US3860051A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chipper cutter and holders therefor
Assignee: Individual
•
Filing: 1972-05-08
•
Granted: 1975-01-14
•
Expires: 1992-05-08
Abstract
Abstract When installed on the cylindrical cutter surface of the chipper drum, the cutter presents a knife having an arcuate cutting edge thereon, the relatively concave face of which is described by a surface revolution, and the relatively convex face of which has a plurality of facets described by angularly successive pairs of dihedral planes passing through the concave face of the edge at acute angles thereto, so that the edge is scalloped in outline. The knife is formed on an annular blade having a plurality of such knives at angularly spaced locations thereabout; and the blade is defined by one end edge portion of an elongated tubular element which is installed in either a socket-like holder or a saddle-like holder, having means thereon whereby the element can be alternately releasably interlocked with the holder in a relative longitudinal position presenting one knife, or released and rotated to present another knife, in the same or a different such position.
Inventors
- 👤 I Anson Anson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:18
CPC Classifications
B; B27; B27L; B27L11/00; B27L11/005
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
49 words
A rotary chipper drum having a series of cutter knives on the cylindrical cutter surface thereof, each of which projects relatively outwardly from the surface of the drum, and has an arcuate cutting edge thereon, the relatively concave face of which is described by a conical surface of revolution.
Claim 2
Dependent Claim
49 words
A rotary chipper drum having a series of cutter knives on the cylindrical cutter surface thereof, each of which projects relatively outwardly from the surface of the drum, and has an arcuate cutting edge thereon, the relatively concave face of which is described by a conical surface of revolution.
Claim 3
Dependent Claim
32 words
The rotary chipper drum according to claim 1 wherein the relatively concave face of the cutting edge extends over a continuous arcuate course bounded by the cylindrical surface plane of the drum.
Claim 4
Dependent Claim
51 words
The rotary chipper drum according to claim 1 wherein the relatively convex face of the cutting edge has a plurality of facets thereon, described by angularly successive pairs of dihedral planes passing through the concave face of the edge at acute angles thereto, so that the edge is scalloped in outline.
Claim 5
Dependent Claim
33 words
The rotary chipper drum according to claim 3 wherein the knives project relatively outwardly from the surface of the drum on axes of revolution coincident with progressively helically advanced chords of the drum.
Claim 6
Dependent Claim
72 words
The rotary chipper drum according to claim 4 wherein those facets of the relatively convex faces of the edges which traverse the cross-sectional planes of the drum coincident with the chords, are disposed in planes which extend substantially parallel to the cylindrical surface plane of the drum; and the facets adjacent thereto are disposed in planes which extend at equal obtuse angles thereto and intersect the cylindrical surface plane of the drum.
Claim 7
Dependent Claim
44 words
The rotary chipper drum according to claim 3 wherein each knife is defined by an annular cutter blade that is seated in a recess in the surface of the drum, and equipped with a plurality of similar knives thereon, at angularly spaced locations thereabout.
Claim 8
Dependent Claim
63 words
The rotary chipper drum according to claim 6 wherein the blade is rotatable about the axis thereof between a plurality of angular orientations corresponding to the locations of the knives, and there are means interconnecting the blade and the drum whereby the blade can be fixed in the seated position thereof at each orientation, for alternate or interchangeable use of the knives thereon.
Claim 9
Dependent Claim
43 words
The rotary chipper drum according to claim 7 wherein the blade is defined by one end edge portion of an elongated tubular element which is detachably inserted in the recess and releasably interlockable with the drum at each operative orientation of the blade.
Claim 10
Dependent Claim
54 words
The rotary chipper drum according to claim 8 wherein the recess is defined by a stationary holder in the surface of the drum, and the element and holder have cooperable means thereon for fixing the relative angular and longitudinal positions of the element in the holder at the various operative orientations of the blade.
Claim 11
Dependent Claim
52 words
The rotary chipper drum according to claim 9 wherein the means for fixing the positions of the element include cooperating pin and groove means for fixing the position of the element in one sense, and means threadedly interconnected with the holder to fix the position of the element in the other sense.
Claim 12
Dependent Claim
92 words
A rotary chipper drum having a recess in the cylindrical cutter surface thereof, means defining an annular blade which is seated in the recess and rotatable about the axis thereof, there being a plurality of knives at angularly spaced locations about the blade, and means interconnecting the blade and drum whereby the blade can be fixed in the seated position thereof at orientations corresponding to the locations of the knives, said knives having an arcuate cutting edge thereon, the relatively concave face of which is described by a conical surface of revolution.
Claim 13
Dependent Claim
92 words
A rotary chipper drum having a recess in the cylindrical cutter surface thereof, means defining an annular blade which is seated in the recess and rotatable about the axis thereof, there being a plurality of knives at angularly spaced locations about the blade, and means interconnecting the blade and drum whereby the blade can be fixed in the seated position thereof at orientations corresponding to the locations of the knives, said knives having an arcuate cutting edge thereon, the relatively concave face of which is described by a conical surface of revolution.
Claim 14
Dependent Claim
41 words
The rotary chipper drum according to claim 11 wherein the axis of the blade is coincident with a chord of the drum, so that a knife projects relatively outwardly from the surface of the drum at each orientation of the blade.
Claim 15
Dependent Claim
43 words
The rotary chipper drum according to claim 12 wherein the blade is defined by one end edge portion of an elongated tubular element which is detachably inserted in the recess and releasably interlockable with the drum at each operative orientation of the blade.
Claim 16
Dependent Claim
54 words
The rotary chipper drum according to claim 13 wherein the recess is defined by a stationary holder in the surface of the drum, and the element and holder have cooperable means thereon for fixing the relative angular and longitudinal positions of the element in the holder at the various operative orientations of the blade.
Claim 17
Dependent Claim
52 words
The rotary chipper drum according to claim 14 wherein the means for fixing the positions of the element incluDe cooperating pin and groove means for fixing the position of the element in one sense, and means threadedly interconnected with the holder to fix the position of the element in the other sense.
Claim 18
Dependent Claim
55 words
The rotary chipper drum according to claim 13 wherein the relatively convex face of the cutting edge of the knives has a plurality of facets thereon, described by angularly successive pairs of dihedral planes passing through the relatively concave face of the edge at acute angles thereto, so that the edge is scalloped in outline.
Claim 19
Dependent Claim
70 words
A rotary chipper drum having a series of cutter knives on the cylindrical cutter surface thereof, each of which projects relatively outwardly from the surface of the drum, and has a cutting edge thereon which is curvilinear in outline and extends between points coincident with spaced parallel longitudinal cross sectional planes of the drum, the relatively concave face of the cutting edge being described by a conical surface of revolution.
Claim 20
Dependent Claim
70 words
A rotary chipper drum having a series of cutter knives on the cylindrical cutter surface thereof, each of which projects relatively outwardly from the surface of the drum, and has a cutting edge thereon which is curvilinear in outline and extends between points coincident with spaced parallel longitudinal cross sectional planes of the drum, the relatively concave face of the cutting edge being described by a conical surface of revolution.
Claim 21
Dependent Claim
30 words
The rotary chipper drum according to claim 17 wherein each knife projects relatively outwardly from the surface of the drum on an axis coincident with a chord of the drum.
Claim 22
Dependent Claim
42 words
The rotary chipper drum according to claim 18 wherein each knife has an arcuate cutting edge, the relatively concave face of which is described by a conical surface of revolution, the axis of which is coincident with the chord of the drum.
Claim 23
Dependent Claim
54 words
A rotary chipper member having a series of cutter knives on the cutter surface thereof, arranged about the rotary axis thereof, each of which projects relatively outwardly from the surface of the member, and has an arcuate cutting edge thereon, the relatively concave face of which is described by a conical surface of revolution.
Claim 24
Dependent Claim
54 words
A rotary chipper member having a series of cutter knives on the cutter surface thereof, arranged about the rotary axis thereof, each of which projects relatively outwardly from the surface of the member, and has an arcuate cutting edge thereon, the relatively concave face of which is described by a conical surface of revolution.
Claim 25
Dependent Claim
38 words
The rotary chipper member according to claim 20 wherein the chipper member takes the form of a drum, and the knives are arranged on chords of the drum to project relatively outwardly from the cylindrical cutter surface thereof.
Claim 26
Dependent Claim
103 words
A rotary chipper member having recesses in the cutter surface thereof, arranged about the rotary axis thereof, means defining a plurality of annular blades, each of which is seated in a recess and rotatable about the axis of the respective blade, there being a plurality of knives at angularly spaced locations about the blade, and means interconnecting the blade and member whereby the blade can be fixed in the seated position thereof at orientations corresponding to the locations of the knives, said knives having an arcuate cutting edge thereon, the relatively concave face of which is described by a conical surface of revolution.
Claim 27
Dependent Claim
103 words
A rotary chipper member having recesses in the cutter surface thereof, arranged about the rotary axis thereof, means defining a plurality of annular blades, each of which is seated in a recess and rotatable about the axis of the respective blade, there being a plurality of knives at angularly spaced locations about the blade, and means interconnecting the blade and member whereby the blade can be fixed in the seated position thereof at orientations corresponding to the locations of the knives, said knives having an arcuate cutting edge thereon, the relatively concave face of which is described by a conical surface of revolution.
Claim 28
Dependent Claim
64 words
The rotary chipper drum according to claim 1 wherein the cutter surface of the drum has a series of recesses therein, and the recesses have cutter blades seated therein, which define the knives; and wherein the inner periphery of each of the cutter blades is described by a reversedly inclined conical surface of revolution terminating at the relatively concave face of the cutting edge.
Claim 29
Dependent Claim
38 words
The rotary chipper drum according to claim 11 wherein the inner periphery of the blade is described by a reversedly inclined conical surface of revolution terminating at the relatively concave face of the cutting edge of the knives.
Claim 30
Dependent Claim
64 words
The rotary chipper member according to claim 20 wherein the cutter surface of the member has a series of recesses therein, and the recesses have cutter blades seated therein, which define the knives; and wherein the inner periphery of each of the cutter blades is described by a reversedly inclined conical surface of revolution terminating at the relatively concave face of the cutting edge.
Claim 31
Dependent Claim
38 words
The rotary chipper member according to claim 22 wherein the inner periphery of the blade is described by a reversedly inclined conical surface of revolution terminating at the relatively concave face of the cutting edge of the knives.
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) | 1978-01-13 | 1978-07-15 | 1979-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-13 | 1982-07-15 | 1983-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-13 | 1986-07-15 | 1987-01-14 | $7700.00 | Window Closed / Lapsed |