A hole saw with ejector configured to eject a plug upon rotating a collar located about the cutting blade. The hole saw with ejector has an annular cutting blade with one or more slots angled with respect to a longitudinal axis. The ejector forms a sub-assembly with a plug stop located inside the cutting blade, an ejector collar located about the cutting blade, and one or more attachments through the one or more slots that connect the plug stop to the ejector collar and form a track and/or rail system whereupon rotation of the ejector collar moves the sub-assembly backward and forward to eject a sawn plug from the hole saw.

A hole cutting tool with plug ejection includes a hole saw having a first central bore and an arbor having a second central bore along a central axis. The arbor is configured at one end to be coupled to a rotational drilling machine, and at the other end to be attached to the hole saw in a first cutting position and detached from the hole saw in a second ejection position. The hole cutting tool also includes a pilot guide having an ejection shoulder. The pilot guide is slidably disposed within the second central bore of the arbor and received through the first central bore of the hole saw. The pilot guide being configured to translate along the central axis between a first drilling position and the second ejection position.

A hole saw having an internal saw with a circular sidewall including a working end including teeth and a backwall connected to the sidewall. The backwall includes an aperture concentrically located with respect to the circular sidewall for receiving a pilot drill designed to extend beyond the working end of the circular sidewall. The hole saw also has an external saw with a circular sidewall with a greater diameter than the circular sidewall of the internal saw. The circular sidewall of the external saw has teeth and an oppositely located proximal end that includes tangs separated by notches. A base plate is fastened to the circular sidewall of the external saw. The base plate includes a plurality of apertures for fixing the base plate to the backwall of the internal saw and locating the circular sidewalls concentric with respect to each other.

A dynamically configurable arbor assembly apparatus. The dynamically configurable arbor assembly apparatus provides plural configurations with removable and attachable components that can be dynamically adjusted and configured to be used with a large variety of power tools, lathes and/or milling machines including plural different attachment interfaces. The dynamically configurable arbor assembly apparatus can also replace a chuck component the power tools, lathes and/or milling machines.

A cutting tool includes a hole saw and an arbor assembly removably coupled to the hole saw. The arbor assembly includes a shank having a first end, a second end opposite the first end and configured to be coupled to a power tool, a body between the first and second ends, and an longitudinal axis extending centrally through the shank between the first and second ends. The body includes a recess. The arbor assembly also includes a sleeve supported by the shank, the sleeve including a central bore that receives the shank and a locking member positioned in the central bore, the locking member formed as a single, monolithic piece with a remainder of the sleeve, the sleeve moveable between a first position, in which the locking member engages the recess, and a second position, in which the locking member is spaced apart from the recess.

The present disclosure generally relates to a recess tool configured to cut a circular recess in drywall, thus enabling the flush mounting of a recessed light trim. The present disclosure generally describes a recess tool having a circular plate with cutting teeth and a guide. The recess tool is configured to be removably secured to a drill such that when operated, the cutting teeth of the circular plate rotate and cut a recess into drywall and stop once the recess reaches a predetermined depth. The guide is configured to be inserted into a can light opening, thereby creating the recess at the location of the recessed light. Once the recess tool cuts a recess into the drywall, a mud ring may be placed into the recess such that the trim is flush with the uncut drywall, thereby creating a flat surface to mud.

The present invention relates to a hole saw that is mounted on an electric drill to cut a hole formed on a flat plate such as a ceiling, and more particularly, to a hole saw with hole enlargement guide and support pieces detachable therefrom that is capable of cutting a hole with a larger size (diameter) than a hole already cut in a ceiling.

The present invention relates to a long hole saw for a composite material insulation panel for easily cutting a steel sheet of a hard material and a heat insulator such as Styrofoam or urethane of a soft material in one direction, wherein it is possible to reduce shaking vibrations generated during the cutting and to easily, precisely, and stably drill holes when drilling holes for the installation of pipes, conduits, etc. into a composite material insulation panel used for wall or roof construction of a building.

A device for enlarging a hole with a frustoconical base body that can be inserted into a hole of a workpiece, and has an insertion opening for inserting a pilot drill of a hole saw. The frustoconical shell surface of the base body has a self-tapping thread, which can engage into the wall of the hole to be enlarged. A screwdriver is provided to apply the correspondingly large torque.

A method for removing a portion of a structure is disclosed. The method includes attaching a first elongated member to the portion of the structure, receiving a second elongated member of a drilling assembly with the first elongated member, drilling into the structure with the drilling assembly while receiving the second elongated member with the first elongated member, and removing the portion of the structure that is attached to the first elongated member while urging the first elongated member with the second elongated member.