Patents by Inventor Randy G. Cooper
Randy G. Cooper has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6250859Abstract: The present disclosure relates to a dust-collection system for use with a power tool such as a router. The system includes a router sub-base adapted for connection to a router. The router sub-base defines an opening configured to receive a cutting tool of the router. The system also includes lower and upper vacuum flowpaths. The lower vacuum flowpath is arranged and configured to evacuate dust from beneath the opening of the router sub-base. The upper vacuum flowpath is arranged and configured to evacuate dust from within the opening of the router sub-base. The disclosure also relates to a system and method for aligning a template guide.Type: GrantFiled: July 10, 1998Date of Patent: June 26, 2001Assignee: Porter-Cable/DeltaInventors: Donald R. Bosten, Randy G. Cooper, Waymon L. McNeal, James T. Stolzer
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Patent number: 6182723Abstract: Improvements made to a router a relate to a switchable router brake system. The switchable brake system permits a motor brake to be selectably engaged to operate when the router motor is turned off. When engaged, the motor brake, which comprises a brake resistor being placed electrically across the motor windings, causes the router motor to stop rotating almost immediately. This feature, however, is not always desired; the switchable brake system permits the operator to engage the use of the brake only when desired, thus providing the option to selectively eliminate jerking caused electric brake torque induced in the router when the brake engages.Type: GrantFiled: November 16, 1998Date of Patent: February 6, 2001Assignee: Porter-Cable CorporationInventors: Donald R. Bosten, James T. Stolzer, Randy G. Cooper, Waymon L. McNeal, Jr., Leslie J. Banduch
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Patent number: 6139229Abstract: Improvements made to a router relate to a fine adjust depth stop system. The preferred router comprises a micro-adjust knob coupled to a threaded member within one of a plurality of plunge guide posts. A depth stop nut is coupled to the treaded member such that the nut travels up and down the threaded member as the mirco-adjust knob is rotated. The location of the nut within the plunge guide post defined a depth stop position for the motor housing relative to a router base. When the motor housing is located at the depth stop position, the stop point, and thus the motor housing, will move up and down relative to the base as the micro-adjust knob is rotated.Type: GrantFiled: November 16, 1998Date of Patent: October 31, 2000Assignee: Porter-Cable CorporationInventors: Donald R. Bosten, James T. Stolzer, Randy G. Cooper, Waymon L. McNeal, Jr., John C. Smith
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Patent number: 6113323Abstract: Improvements made to a router relate to a sub-base alignment system. In a preferred embodiment, the alignment system comprises a plurality of raised bosses which are located on the sub-base at known locations and which engage a plurality of recessed cavities in the router base. Alternatively, the raised bosses may be placed on the router base and the cavities may be located in the sub-base, or a combination of boss and cavity locations may be used. The router base is positioned at a known locations relative to the center of rotation of the router bit. For example, in the plunge router shown, the base is coupled to plunge guide posts, which themselves are coupled to the motor housing at known locations. The coupling of the raised bosses with the recessed cavities places the sub-base at a known position relative to the router base.Type: GrantFiled: November 16, 1998Date of Patent: September 5, 2000Assignee: Porter-Cable CorporationInventors: Donald R. Bosten, James T. Stolzer, Randy G. Cooper, Waymon L. McNeal, Jr.
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Patent number: 6079915Abstract: Improvements made to a router relates to a plunge router depth stop system. The depth stop system comprises a depth stop rod contained within a restraining collar coupled to the router housing. The depth stop rod is configured both to rotate at a fixed height above the router base and to slide up and down within the collar in order to adjust its height above the base. At an upper end of the depth stop rod, a turret knob permits an operator to rotate the rod within the collar. At the other end of the rod, a protrusion portion selection member is located to engage selectively one of a plurality of step-wise rising depth stop position surfaces located on the router base. When the protrusion portion selection member is aligned vertically above one of the depth stop position surfaces, the motor housing will plunge until the protrusion portion selection member engages the depth stop position.Type: GrantFiled: November 16, 1998Date of Patent: June 27, 2000Assignee: Porter-Cable CorporationInventors: Donald R. Bosten, James T. Stolzer, Randy G. Cooper, Waymon L. McNeal, Jr.
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Patent number: 6065912Abstract: Improvements made to a router include a switching system which is part of a router handle and which operates the router motor by connecting it to an external electrical power source. In a preferred embodiment, the present switching system comprises the use of a locking lever and trigger in combination to activate the motor, to hold the trigger in a locked-on position to maintain the connection of electrical power to the motor, and to lock the movement of the trigger from occurring before an operator attempts to engage the motor. The switching system may also be combined with a preferred router handle shape in order to make the long term operation of the router and its switching comfortable with extended use.Type: GrantFiled: November 16, 1998Date of Patent: May 23, 2000Assignee: Porter-Cable CorporationInventors: Donald R. Bosten, James T. Stolzer, Randy G. Cooper, Waymon L. McNeal, Jr.
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Patent number: 5998897Abstract: Improvements made to a router relate to a router chuck and collet mounting system. In a preferred embodiment, the present mounting system comprises mating a top face of a router chuck with the lower surface of an inner race of an armature shaft bearing and mating an inner diameter of the chuck with an outer diameter of the armature shaft to align the chuck with the shaft. Additionally, a cavity through the chuck may be used to accept a router bit shank so that it extends up into a lower end of the shaft in order to permit the shank to extend upward, closer to the armature shaft bearing. This arrangement reduces router bit run-out.Type: GrantFiled: November 16, 1998Date of Patent: December 7, 1999Assignee: Porter-Cable CorporationInventors: Donald R. Bosten, James T. Stolzer, Randy G. Cooper, Waymon L. McNeal, Jr.
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Patent number: 5993124Abstract: The present disclosure relates to a dust-collection system for use with a power tool such as a router. The system includes a router sub-base adapted for connection to a router. The router sub-base defines an opening configured to receive a cutting tool of the router. The system also includes lower and upper vacuum flowpaths. The lower vacuum flowpath is arranged and configured to evacuate dust from beneath the opening of the router sub-base. The upper vacuum flowpath is arranged and configured to evacuate dust from within the opening of the router sub-base.Type: GrantFiled: July 10, 1997Date of Patent: November 30, 1999Assignee: Porter-Cable CorporationInventors: Randy G. Cooper, Michael K. Taylor
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Patent number: 5988241Abstract: Improvements made to a router relate to ergonomic router handles. The preferred router handles are generally elliptical in shape and have one end narrower than the other end. The handles are shaped to provide an operator an infinite number of angles to which the operator's hand may effectively grip the handles. Additionally the handles provide an outer surface which provides a flat tactile grip area. The combination of these elements, along with the shape and location of the preferred trigger and locking arm switch used to activate the preferred router, provides an operator, while operating the router, with the ability to find and use a handle-holding position which is comfortable for the individual user for holding the handles.Type: GrantFiled: November 16, 1998Date of Patent: November 23, 1999Assignee: Porter-Cable CorporationInventors: Donald R. Bosten, James T. Stolzer, Randy G. Cooper, Waymon L. McNeal, Jr., Mark A. Etter
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Patent number: 5597347Abstract: A sander vacuum housing and pad frame system is provided for generating unique, continuous air flow for dust collection in a sander coupled to a dust collection system, while providing the versatility of a pad frame system. The system has particular application to a pad frame system for supporting sanding pads having varying characteristics, but is not limited to such a system. The system comprises a vacuum housing configured to be coupled to a motorized sanding mechanism of a sander for moving the vacuum housing in a sanding motion. The vacuum housing defines the upper portion of a dust channel. The dust channel in the vacuum housing is configured for connection to a dust collection system. The system further comprises a pad frame configured to be coupled under the vacuum housing for moving the lower surface of an attached frame in a sanding motion. The pad frame comprises a sanding pad for supporting sandpaper.Type: GrantFiled: February 9, 1995Date of Patent: January 28, 1997Assignee: Porter-Cable CorporationInventors: Donald R. Bosten, John R. Kriaski, Randy G. Cooper
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Patent number: 5554066Abstract: An in-line sander comprising a sander body which houses a motor coupled to an in-line oscillating mechanism. The in-line oscillating mechanism is adapted and configured to move a sanding pad in a linear oscillating motion.A preferred pad is a profiled sanding pad coupled to the in-line oscillating mechanism. The profiled sanding pad has, in a plane substantially perpendicular to the linear oscillating motion of the sander, a particular cross sectional profile corresponding to a profile to be formed onto or to be sanded on a workpiece. The cross sectional configuration extends substantially consistently along the length of the pad, and the pad defines a sanding surface having a profile corresponding to the particular cross sectional profile. With such profiled sanding pads, sandpaper secured to the sanding surface of the pads will power sand the profile to be formed onto or to be sanded on a workpiece.Type: GrantFiled: February 9, 1995Date of Patent: September 10, 1996Assignee: Proter-Cable CorporationInventors: Donald R. Bosten, John R. Kriaski, Randy G. Cooper, John C. Smith
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Patent number: 5375495Abstract: An optical system for projecting an alignment marker on to a workpiece relative to the circular blade of a power saw. The light projection system projects a planar beam of light along a plane defined by one side of the blade to designate the location at which that side of the blade will enter the workpiece. An adjustment mechanism may be included to allow movement of the light projection system so that the planar beam of light can be selectively located parallel to the plane defined by either side of the blade.Type: GrantFiled: May 18, 1993Date of Patent: December 27, 1994Assignee: Porter-Cable CorporationInventors: Donald R. Bosten, John R. Kriaski, John W. Schnell, James P. Nichols, Jr., Steven H. Plume, Matthew G. Popik, Dennis C. Huntsman, Randy G. Cooper, David V. Keller
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Patent number: 5285708Abstract: A miter saw with an optical system for projecting an optical alignment marker onto a workpiece. The miter saw has a base, a turntable rotatably supported by the base, a fence disposed above the base for supporting the orientation of the workpiece located on the base, a support coupled to the rear portion of the turntable, and a cutting apparatus including a blade for cutting the workpiece. The cutting apparatus is pivotally coupled to the support for positioning the blade from a raised position above the workpiece to an operational position for engagement with the workpiece. The light projection system is attached to the cutting apparatus for projecting an optical alignment marker onto the workpiece so that the location at which the blade engages the workpiece is in a selectably adjustable relationship with respect to the position of the optical alignment marker on the workpiece.Type: GrantFiled: May 18, 1992Date of Patent: February 15, 1994Assignee: Porter-Cable CorporationInventors: Donald R. Bosten, John R. Kriaski, John W. Schnell, James P. Nichols, Jr., Steven H. Plume, Matthew G. Popik, Dennis C. Huntsman, Randy G. Cooper, David V. Keller
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Patent number: 4858662Abstract: Disclosed is a plate joiner having a superior miter guide for mitered carcase joints. The plate joiner comprises a system for forming a plunge cut. The joiner also includes a miter guide for securely engaging the mitered portion of carcase workpieces and for accurately and reliably locating plunge cuts perpendicularly into opposing mitered carcase joint surfaces so that, when a joint is glued together with a plate in opposing plunge cuts, a closed joint having mitered outside workpiece surfaces is formed, independent of workpiece thickness.Type: GrantFiled: June 3, 1988Date of Patent: August 22, 1989Assignee: Porter-Cable CorporationInventors: Donald R. Bosten, Randy G. Cooper
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Patent number: 4858663Abstract: Disclosed is a plate joiner having a quiet drive. The joiner comprises a base having a guide surface with a cutter slot. A cutter is normally housed in the base, the cutter having a drive shaft with an axis oriented substantially parallel to the guide surface and substantially perpendicular to the cutter slot. The joiner comprises a motor for driving the cutter and a system for causing the cutter to protrude from the base through the cutter slot and to make a plunge cut into a joint surface of a workpiece when the guide surface of the base is pressed aganist the joint surface. The present plate joiner further comprises a quiet drive system for rotating the cutter without the use of gears between the output shaft of the motor and the drive shaft of the cutter.Type: GrantFiled: June 3, 1988Date of Patent: August 22, 1989Assignee: Porter-Cable CorporationInventors: Donald R. Bosten, Randy G. Cooper
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Patent number: D315281Type: GrantFiled: August 19, 1987Date of Patent: March 12, 1991Assignee: Porter Cable CorporationInventors: Donald R. Bosten, Randy G. Cooper
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Patent number: D352509Type: GrantFiled: May 6, 1993Date of Patent: November 15, 1994Assignee: Porter-Cable CorporationInventors: John R. Kriaski, Randy G. Cooper, James P. Nichols, Jr., Donald R. Bosten
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Patent number: D374386Type: GrantFiled: February 9, 1995Date of Patent: October 8, 1996Assignee: Porter-Cable CorporationInventors: Donald R. Bosten, John R. Kriaski, Randy G. Cooper
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Patent number: D407617Type: GrantFiled: July 11, 1997Date of Patent: April 6, 1999Assignee: Porter Cable-CorporationInventors: Randy G. Cooper, Michael K. Taylor
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Patent number: D416460Type: GrantFiled: November 16, 1998Date of Patent: November 16, 1999Assignee: Porter-Cable CorporationInventors: Donald R. Bosten, James T. Stolzer, Randy G. Cooper, Waymon L. McNeal, Jr., Mark A. Etter