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US3797544A Expired / Lapsed US ⏱️ 0.0 years remaining

Cutter disc

Assignee: Individual
•
Filing: 1972-07-21
•
Granted: 1974-03-19
•
Expires: 1992-07-21
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Abstract

Abstract A stump cutting machine includes a rotatable cutter disc having a plurality of cutter tools on opposite sides thereof and each of the tools includes a bit holder having half sections for clamping the shank of a bit therebetween in a slot formed in the mating face of one of the half sections. The mating faces of the half sections are in a plane extending at an angle to the disc such that the bit extends at an angle to the disc and radially outwardly from the disc center axis of rotation. The bit holder may be turned between two positions 180 degrees apart and the bit will extend outwardly relative to the disc in one position and inwardly relative to the disc in the other position. A pair of bolts extend through the holder half sections and the disc to connect two holders on the disc on opposite sides thereof. The depth of the slot perpendicular to the face thereof is less than the thickness of the bit shank to assure clamping action by the two half sections when drawn tightly together. The bits include a cutting head having a depth limiting shoulder such that all bits extend uniformly into the bit holders at equal distance and are limited by the shoulders engaging the outer edge of the holder.

Inventors

  • 👤 Ploeg A Ver

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 17:47
CPC Classifications
A; A01; A01G; A01G23/00; A01G23/02; A01G23/06; A01G23/067

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 118 words
A cutter disc, comprising, a rotatable, cutter disc having a center axis of rotation, a plurality of cutter tools mounted on said disc radially outwardly of said center axis of rotation, said cutter tools each including a holder and a bit, said bit having a cutting head and shank, said holder having a pair of half sections having mating faces in a plane extending at angle to said disc, one of said half sections having a slot formed in its mating face with said bit shank positioned in said slot, and locking means interconnecting said half sections to hold said bit and secure said cutter tool to said disc with said bit extending at angle to said disc.
Claim 2
Dependent Claim 118 words
A cutter disc, comprising, a rotatable, cutter disc having a center axis of rotation, a plurality of cutter tools mounted on said disc radially outwardly of said center axis of rotation, said cutter tools each including a holder and a bit, said bit having a cutting head and shank, said holder having a pair of half sections having mating faces in a plane extending at angle to said disc, one of said half sections having a slot formed in its mating face with said bit shank positioned in said slot, and locking means interconnecting said half sections to hold said bit and secure said cutter tool to said disc with said bit extending at angle to said disc.
Claim 3
Dependent Claim 30 words
The structure of claim 1 wherein said cutter tools are mounted on opposite sides of said disc and said bits extend radially relative to said disc center axis of rotation.
Claim 4
Dependent Claim 36 words
The structure of claim 1 wherein cutter tools include said holders positioned on said disc to provide at least one bit extending angularly outwardly of said disc and one bit extending angularly inwardly of said disc.
Claim 5
Dependent Claim 38 words
The structure of claim 1 wherein said cutting head on said bit includes a depth limiting shoulder in engagement with the outer edge of said holder whereby said bits are positioned in said holders at a uniform depth.
Claim 6
Dependent Claim 49 words
The structure of claim 1 wherein said slot in said one half section face has a depth perpendicular to said face which is less than the thickness of said bit shank and said holder half sections are drawn into clamping engagement with said bit shank by said locking means.
Claim 7
Dependent Claim 28 words
The structure of claim 1 wherein said locking means includes a pair of bolts extending on opposite sides of said bit perpendicular to the plane of said disc.
Claim 8
Dependent Claim 50 words
The structure of claim 1 wherein two of said cutter tools are disposed directly opposite each other on opposite sides of said disc and said locking means includes a pair of bolts on opposite sides of said pair of bits locking said two pairs of half sections to said disc.
Claim 9
Dependent Claim 26 words
The structure of claim 1 wherein all of said cutter tool holders having bits extending at an angle to said disc are substantially identical and interchangeable.
Claim 10
Dependent Claim 36 words
The structure of claim 1 wherein said slot includes a bottom wall and oppositely disposed perpendicular parallel side walls and said bit shank is rectangular in cross section to matingly engage said walls of said slot.
Claim 11
Dependent Claim 27 words
The structure of claim 9 wherein the mating Face of said other half section is substantially flat and matingly engages a side surface of said bit shank.

References Cited (Backward Citations)

US1162792A Cited
US2992664A Cited
US3570566A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-03-18 1977-09-17 1978-03-19 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-03-18 1981-09-17 1982-03-19 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-03-18 1985-09-17 1986-03-19 $7700.00 Window Closed / Lapsed

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