Patent ID: 11926070
Assignee: OREGON TOOL, INC.
Field: Machine tools (Mechanical engineering)
Classification: CPC B  Y | IPC B

Claim 16:
17. A method for creating a chain saw bar, comprising:
forming, in an inner core with a perimeter edge defined between a first side of the inner core and a second side of the inner core, a first fluid channel that extends between a first fluid hole at a first end of the inner core and a first fluid exit port at a second end of the inner core, the first end configured to receive a fluid from a fluid supply;
forming a second fluid channel that extends along a longitudinal direction of the chain saw bar, the second fluid channel in communication with a second fluid hole at the first end of the inner core and a second fluid exit port at the second end of the inner core such that the second fluid exit port is disposed proximate to a nose of the chain saw bar;
forming, at the second end of the inner core, the first fluid exit port;
securing, to the first side of the inner core, a first outer wall;
securing, to the second side of the inner core, a second outer wall, wherein the first outer wall and second outer wall extend past the perimeter edge to define a saw chain groove, and the first fluid exit port and the second fluid exit port are in communication with the saw chain groove; and
providing a valve at the first fluid exit port, wherein the first fluid exit port is disposed at or near the perimeter edge and proximate to a cutting area of the bar groove,
and wherein the valve is configured to substantially prevent oil from leaking out of the chain saw bar when the chain saw bar is not in use and allow oil to pass out of the fluid exit port when the chain saw bar is in use.