US 8,146,474 B2Granted

Wood cutting saw chain and replaceable cutting members

AssigneeIndigo Innovators, Inc.

InventorDavid Szymanski

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Abstract

A quick change cutting link of a saw chain for cutting wood comprises a base member adapted to be pivotally connected to other links of the saw chain. The base member comprises a seat surface. A cutting member comprising a “V” notch releasably engages the seat surface of the base member. Attached to the “V” notch is a carbide tip, including a cutting edge. The carbide tip is accurately placed in the “V” notch by mating with a small piece of metal in the “V” notch. The carbide tip is then sinterbrazed to the cutting member. The cutting member and seat surface may also comprise an inverted L-shaped protrusion and the other includes an inverted L-shaped recess for receiving the inverted L-shaped protrusion. The inverted L-shaped protrusion and recess may be designed so as to form a wedge.

Claims10

Dependent claims

A quick change cutting link for a saw chain for cutting wood, comprising:

a base member adapted to be pivotally connected to other links of the saw chain, said base member comprising a seat surface having a first taper,
a cutting member including a surface, said surface having a second taper extending along a length of said cutting member, said cutting member further including a V-shaped notch extending along a width of said cutting member, the V-shaped notch including a portion of powdered metal dispersed in a corner of said V-shaped notch at a location along only a portion of said width, wherein said second taper of the cutting member surface engages said first taper of said seat surface, releasably mounting and self-locking said cutting member to said base member, and
a carbide tip seated within said V-shaped notch, said carbide tip having a mating surface shaped cooperatively with said V-shaped notch, said mating surface including a detent receiving said powdered metal portion, wherein said base member, said cutting member, and said carbide tip comprise a single link.

Dependencies are inferred from the claim text.

Facts

Application: 12/125,289Filed 22 May 2008 · continuation in part
Priority: 17 Feb 2004
Published: US 2008/0264230 A130 Oct 2008
Granted: 3 Apr 2012
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

B27B 33/144
Cutter elements: having cutting inserts or exchangeable cutting teeth
Y10T 83/909
Cutting: cutter assemblage or cutter element therefor [e.g., chain saw chain]
Y10T 83/913
Cutter assemblage or cutter element therefor [e.g., chain saw chain]: with means permitting removal of cutter element
Y10T 83/925
Cutter assemblage or cutter element therefor [e.g., chain saw chain]: having noncutting depth gauge

Family

Application10/780,323Parent of this continuation-in-part · filed 17 Feb 2004
US 2008/0264230 A1Pre-grant publication · published 30 Oct 2008
US 2005/0178263 A1Published application
US 8,146,474 B2This patent

From the US filing history. Foreign family members aren’t listed.

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