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1. (WO1983001408) TRONÇONNEUSE UTILISANT UNE DENT DE COUTEAU LATERALE AMELIOREE
Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique
I claim:

1. An improved side cutter tooth for a saw chain of a chain saw, comprising:
(a) a first link having -.- (i) a body defining a plane for the tooth and
two half-spaces separated by the plane;
(ii) a root, extending from the body in the
plane, capable of engaging a sprocket of
the chain saw;
(iii) a leading depth gauge extending laterally
outwardly from the body in a direction
substantially opposite the root but in the
plane; and
(iv) a trailing cutter element extending laterally outwardly from the body in a direction substantially opposite the root, yet
spaced behind the depth gauge, including a
continuously curved portion attached to
the body and ending in a cutter tip, the
portion curling out of the plane into one
half-space, wherein the continuous curve
causes the cutter element to bend substantially at the intersection of the body and
the cutter element when the cutter element
is exposed to inwardly directed forces
which tend to flatten the curved portion
from the half-space into the plane, thereby reducing crimping and breakage of the
cutter element; and
(b) a second link, being substantially a mir'ror image
of the first link, positioned adjacent the first
link in substantial alignment with the first link
to form a side cutter tooth capable of simultane- . ously cutting slits on both sides of a kerf when
moving as part of a saw chain.

OMPI

2. An improved side cutter tooth for the saw chain of a chain saw, comprising:
(a) a first link having —
(i) a body defining a plane for the tooth and
two half-spaces separated by the plane;
(ii) a root, extending from the body in the
plane, capable of engaging a sprocket of
the chain saw;
(iii) a leading depth gauge extending laterally
outwardly from the body in a direction
substantially opposite the root but in the
plane; and
(iv) a trailing cutter element extending laterally outwardly from the body in a direction substantially opposite the root, yet
spaced behind the depth gauge, including a
straight portion attached to the body and
ending in a cutter tip, the portion extending outwardly from the body into one
half-space, wherein the cutter element
bends substantially at the intersection
of the cutter element and body when the
cutter element is exposed to inwardly
directed forces which tend to flatten the
straight portion from the half-space into
the plane, thereby reducing crimping and
breakage of the cutter element; and
(b) a second link, being substantially a mirror image
of the first link, positioned adjacent the first
link in substantial alignment with the first link
to form a side cutter tooth capable of simultaneously cutting slits on both sides of a kerf when
moving as part of a saw chain.

3. The side cutter tooth of claim 1 or 2 wherein the links further, have a spur extending laterally outwardly from the body substantially in the same direction as the root, yet spaced ahead of the root, in the plane, being capable of cocking the

JR.
OMPI side cutter tooth by engaging an idler sprocket on the end of the bar of a chain saw so that, when the side cutter tooth moves in an arc around the end of the bar, the relative distance between the leading depth gauge and the trailing cutter element is substantially no greater than the distance between the leading depth gauge and the trailing cutter element when the saw chain is moving in a straight line.

4. An improved saw chain for a chain saw, capable of cutting a kerf, comprising a plurality of pivotally joined teeth forming an endless belt of saw chain and including at least one improved side cutter tooth in the belt, wherein the side cutter tooth comprises:
(a) a first link having —
(i) a body defining a plane for the tooth and
two half-spaces separated by the plane;
(ii) a root, extending from the body in the
plane, capable of engaging a sprocket of
the chain saw;
(iii) a leading depth gauge extending laterally
outwardly from the body in a direction
substantially opposite the root but in the
plane; and
(iv) a trailing cutter element extending laterally outwardly from the body in a direction substantially opposite the root, yet
spaced behind the depth gauge, including a
continuously curved portion attached to
the body and ending in a cutter tip, the
portion curling out of the plane into one
half-space, wherein the continuous curve
causes the cutter element to bend" substantially at the intersection of the -body and
the cutter element when the cutter element
is exposed to inwardly directed forces
which tend to flatten the curved portion
from the half-space into the plane, thereby reducing crimping and breakage of the
cutter element; and (b) a second link, being substantially a mirror image
of the first link, positioned adjacent the first
link in substantial alignment with the first link
to form a side cutter tooth capable of simultaneously cutting slits on both sides of a kerf when
moving as part of a saw chain.

5. The saw chain of claim 4 wherein the side cutter tooth further includes on each link a spur extending laterally outwardly from the body substantially in the same direction as the root, yet spaced ahead of the root, in the plane, being capable of cocking the side cutter tooth by engaging an idler sprocket on the end of the bar of a chain saw so that, when the side cutter tooth moves in an arc around the end of the bar, the relative distance between the leading depth gauge and the trailing cutter element is substantially no greater than the distance between the leading depth gauge and the trailing cutter element when the saw chain is moving in a straight line.

6. An improved saw chain for a chain saw, capable of cutting a kerf, comprising a plurality of pivotally joined teeth forming an endless belt of saw chain, including at least one side cutter tooth to score the kerf and at least one raker tooth traveling behind the side cutter tooth to chip wood from the scored kerf, each side cutter tooth being substantially as defined in claim 1.

7. An improved saw chain for a chain saw, capable of cutting a kerf into a piece of wood, comprising a plurality of pivotally joined teeth forming an endless belt of saw chain, the teeth being joined in a repeating series, wherein each series includes a side cutter tooth, a right-hand raker tooth, and a left-hand raker tooth, wherein each side cutter tooth. of each series is substantially as defined in claim 1.

8. .The saw chain of claim 7 wherein each series includes, in order, as cutting teeth: a first side cutter tooth, a right-hand raker tooth, a second side cutter tooth, and a left-hand raker tooth.

9. The saw chain of claim 7 or 8 wherein the raker teeth include offset depth gauges to provide improved performance for the saw chain.

10. The saw chain of claim 7 wherein each cutting tooth is separated from the next cutting tooth by a spacer link.

PI