Adjustable hole cutters
OwnerBruce Winter Stenmaninventor
Life of this patent
Estimating the term…
Abstract
An adjustable hole cutter for cutting a hole with a predetermined diameter in sheet or panel material includes a blade holder that moves along a track or slot to alter a diameter of the cut hole; a blade arc adjuster coupled to the blade holder; and one or more replaceable blade segments coupled to the blade holder.
Claims15
An adjustable hole cutter for cutting a hole with a predetermined diameter in sheet or panel material, comprising:
- a blade holder that moves along a track or slot to alter a diameter of the cut hole;
- a blade arc adjuster coupled to the blade holder;
- and
- a replaceable blade segment coupled to the blade holder the replaceable blade segment being retained in an arced shape by the blade arc adjuster to define an arc with an apex, the arc being adjustable by the blade arc adjuster.
An adjustable hole cutter for cutting a hole with a redetermined diameter in sheet or panel material, comprising:
- a blade holder that moves along a track or slot to alter a diameter of the cut hole;
- a blade arc adjuster coupled to the blade holder;
- and
- a replaceable blade segment coupled to the blade holder, wherein two pins are used to retain the blade segment in the blade holder to adjust the arc of the blade segment.
An adjustable hole cutter for cutting a hole with a redetermined diameter in sheet or panel material, comprising:
- a blade holder that moves along a track or slot to alter a diameter of the cut hole;
- a blade arc adjuster coupled to the blade holder;
- and
- a replaceable blade segment coupled to the blade holder, wherein the replaceable blade segment has a central hole and two slots to restrict its movement in the blade holder while allowing for bending it to the desired amount of arc.
An adjustable hole cutter for cutting a hole with a predetermined diameter in sheet or panel material, comprising:
- a blade holder that moves along a track or slot to alter a diameter of the cut hole, the blade holder having a base plate;
- a disc or spoked wheel coupled to the blade holder;
- a replaceable blade segment coupled to the blade holder and having an arced shape defining an arc with an apex;
- a blade arc adjuster coupled to the blade holder and structured to adjust the arc of the replaceable blade segment;
- a drive shaft with a square section to mount into a hub of the disc or a spoked wheel for the hub, wherein the hub and drive shaft move in unison with a pin or screw that transects the drive shaft and hub;
- and
- one or more markings on the base plate to indicate a position for adjusting the apex of the arc of the replaceable blade segment for the predetermined diameter and wherein each mark is a nominal value for the diameter of the hole to be cut.
Dependencies are inferred from the claim text.