Screw gun router for drywall installation
First Claim
1. In a screw gun having a forward end, a handle and a backward end, wherein a drive motor is positioned within the screw gun between the forward end and the backward end, with a screw driving head being mounted at the forward end of said screw gun to be driven by said motor, the improvement comprisingan access opening through the backward end of said screw gun, said access opening being in alignment with a rotational axis of said drive motor;
- an engageable end portion of a rear drive shaft extending from said drive motor, said end portion of said rear drive shaft being accessible through said access opening;
a removable adapter member comprising a housing having first and second ends, with said first end of said housing being cylindrical in shape and further being sized to slide snugly into and out of said access opening, whereby said screw gun can be essentially instantaneously converted to a hand held router by manually sliding said first end of said removable adapter member into said access opening and then manually holding said attachment member in engagement with said access opening, and further whereby said hand held router can be essentially instantaneously converted back to said screw gun by manually withdrawing said first end of said housing from said access opening;
an elongate, rotatable extension shaft having first and second ends and extending longitudinally through said housing such that the extension shaft can freely rotate within said housing about a longitudinal axis of said extension shaft, with the first end of said extension shaft being accessible at said first end of said housing and the second end of said extension shaft being accessible at said second end of said housing;
means for engaging said first end of said extension shaft to said end portion of said rear drive shaft when said first end of said housing of said removable adapter member is manually inserted in said access opening in the backward end of said screw gun; and
an elongate, routing drill bit mounted to said second end of said extension shaft such that when said removable adapter member is engaged with said access means the routing drill bit extends from the backward end of said screw gun and is in axial alignment with the longitudinal axis of said extension shaft of said removable adapter member.
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Accused Products
Abstract
An improvement is provided in a screw gun used in the drywall installation industry. The improved screw gun has a conventional screw driving head at the forward end of the gun. A rear drive shaft extends from the motor of the gun, and an access member is provided at the back of the screw gun to provide access to the distal end of the drive shaft. An adapter member is adapted to be received in and withdrawn from the access member. The adapter member has a rotatable cutting tool associated therewith. Rotational motion is transmitted from the drive shaft to the rotatable cutting tool by the adapter member when the adapter member is received in the access member and the rear drive shaft is driven by the motor.
27 Citations
8 Claims
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1. In a screw gun having a forward end, a handle and a backward end, wherein a drive motor is positioned within the screw gun between the forward end and the backward end, with a screw driving head being mounted at the forward end of said screw gun to be driven by said motor, the improvement comprising
an access opening through the backward end of said screw gun, said access opening being in alignment with a rotational axis of said drive motor; -
an engageable end portion of a rear drive shaft extending from said drive motor, said end portion of said rear drive shaft being accessible through said access opening; a removable adapter member comprising a housing having first and second ends, with said first end of said housing being cylindrical in shape and further being sized to slide snugly into and out of said access opening, whereby said screw gun can be essentially instantaneously converted to a hand held router by manually sliding said first end of said removable adapter member into said access opening and then manually holding said attachment member in engagement with said access opening, and further whereby said hand held router can be essentially instantaneously converted back to said screw gun by manually withdrawing said first end of said housing from said access opening; an elongate, rotatable extension shaft having first and second ends and extending longitudinally through said housing such that the extension shaft can freely rotate within said housing about a longitudinal axis of said extension shaft, with the first end of said extension shaft being accessible at said first end of said housing and the second end of said extension shaft being accessible at said second end of said housing; means for engaging said first end of said extension shaft to said end portion of said rear drive shaft when said first end of said housing of said removable adapter member is manually inserted in said access opening in the backward end of said screw gun; and an elongate, routing drill bit mounted to said second end of said extension shaft such that when said removable adapter member is engaged with said access means the routing drill bit extends from the backward end of said screw gun and is in axial alignment with the longitudinal axis of said extension shaft of said removable adapter member. - View Dependent Claims (2, 3, 4, 5)
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6. In a screw gun having a forward end, a handle and a backward end, wherein a drive motor is positioned within the screw gun between the forward end and the backward end, with a screw driving head being mounted at the forward end of said screw gun to be driven by said motor, the improvement comprising
a rear drive shaft extending from said drive motor; -
an access opening through the backward end of said screw gun, said access opening being in axial alignment with said rear drive shaft, such that an end portion of said rear drive shaft is accessible by way of said access opening; a removable attachment member having a first end that is cylindrical in shape and sized to slide snugly into and out of said access opening, whereby said screw gun can be essentially instanteously converted to a hand held router by manually sliding said first end of said removable attachment member into said access opening and then manually holding said attachment member in engagement with said access opening, and further whereby said hand held router can be essentially instanteously converted back to said screw gun by manually withdrawing said first end of said housing from said access opening; a rotatable drive member associated with said attachment member, said rotatable drive member having a forward end, a distal end and a rotational axis extending between the forward end and the distal end; means for coupling the forward end of said rotatable drive member to said end portion of the rear drive shaft of said drive motor when said removable attachment member is received in said access opening; and an elongate, routing drill bit mounted to the distal end of said rotatable drive member such that the routing drill bit has its longitudinal axis of rotation in axial alignment with said rotational axis of said rotatable drive member, whereby when said removable attachment member is received in said access opening, the elongate, routing drill bit extends away from said backward end of said screw gun and rotates in axial alignment with said rotatable drive member. - View Dependent Claims (7, 8)
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Specification