Patents by Inventor Robert E. McCracken

Robert E. McCracken 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).

  • Patent number: 5595532
    Abstract: An electrically-powered polisher is provided which includes a central housing having a top and a bottom and a front and a back with a rotary pad mounted adjacent to the bottom of the housing. A front handle extends horizontally outwardly from the housing front substantially parallel to the top and bottom of the housing adjacent to and above the housing bottom. A rear handle extends outward from the housing rear and extends vertically between the top and bottom of the housing. A collar is defined at the top of the housing and a male receptacle, including male prongs, is mounted therein. The male receptacle is capable of being electrically connected to a female socket head of an electrical cord supplying power to the waxer. The collar is recessed in the top of the housing with the male prongs of the receptacle extending from the housing into the collar.
    Type: Grant
    Filed: October 20, 1995
    Date of Patent: January 21, 1997
    Assignee: Waxing Corporation of America, Inc.
    Inventor: Robert E. McCracken
  • Patent number: 5593312
    Abstract: A locking device for maintaining a mating connection between female and male ends of electrical cords is provided including a locking member which is a flat rigid element. Structure in the locking member is provided for receiving enlarged plug and socket heads on ends of electrical cords through the locking member. At least one slot is formed in the locking member connected to the enlarged head receiving structure with the slot being configured to substantially fix the cord receiving tension forces in a predetermined position in the slot.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: January 14, 1997
    Assignee: Waxing Corporation of America, Inc.
    Inventor: Robert E. McCracken
  • Patent number: 5428197
    Abstract: An actuator switch (25) for an electrical power tool (10), having a housing (16) and an electric motor supported by the housing (16) for operatively driving a work implement, is provided. The actuator switch (25) includes a trigger (22) which cooperates with the housing (16) and is shiftably operable by the user between "on" and "off" positions. A power switch assembly (26) is oriented within the tool housing (16) adjacent the trigger (22) for actuation thereby. The power switch assembly includes a body (28) defining an internal cavity (30) with an aperture (32) extending therethrough. An electrical switch (34) is located within the switch assembly (26) and is electrically connected to the electric motor. A plunger (42) extends through the body aperture (32) to enable the trigger (22) to activate the electrical switch (34). An elastomeric pad (44) is operatively positioned between the plunger (42) and the trigger (22).
    Type: Grant
    Filed: June 1, 1993
    Date of Patent: June 27, 1995
    Assignee: Ryobi Motor Products Corp.
    Inventors: Ronald C. McCurry, Robert E. McCracken, James A. Keith, Jr.
  • Patent number: 5188492
    Abstract: A router having a depth of cut adjustment mechanism including an adjustment ring which engages a screw thread on the motor housing and rotationally engages the router base. There is further provided an arrangement for preventing relative rotation between the motor housing and the base. The adjustment ring is formed as a split ring with projections adjacent opposite sides of the split, each with a frusto-conical camming surface. A circular clamp knob having a plurality of tabs extending axially outward from a top surface and radially outward from a central axis is mounted for threaded rotation on a bolt passing through the projections radially with respect to the router motor housing which bears against the camming surfaces so as to squeeze the ring in order to effect a clamping action as the knob is moved inwardly.
    Type: Grant
    Filed: November 5, 1991
    Date of Patent: February 23, 1993
    Assignee: Ryobi Motor Products Corporation
    Inventor: Robert E. McCracken
  • Patent number: 5181813
    Abstract: A portable electric router having a depth of cut adjustment mechanism including an adjustment ring which engages a screw thread on the motor housing and rotationally engages the router base. The adjustment ring is formed as a split ring with radially directed projections adjacent opposite sides of the split. One of the projections is formed with a camming surface and a clamp lever is provided with a camming surface slidably engaging the projection camming surface. The projection with the camming surface is captured between the other projection and the clamp lever so that rotation of the clamp lever in a first direction forces the projections toward each other to clamp the adjustment ring to the motor housing and the base and rotation of the clamp lever in a second direction allows the projections to separate to release the adjustment ring.
    Type: Grant
    Filed: November 15, 1991
    Date of Patent: January 26, 1993
    Assignee: Ryobi Motor Products Corp.
    Inventor: Robert E. McCracken
  • Patent number: 5176479
    Abstract: A portable electric router having a depth of cut adjustment mechanism including an adjustment ring which engages a screw thread on the motor housing and rotationally engages the router base. Rotational engagement of the ring with the base is effected by providing an annular groove on the base and a projection on the ring engaging the groove. The projection is formed with a plurality of pockets each having an opening communicating with the groove. Within each of the pockets is a ball which extends through the opening to contact a wall of the groove and thereby act as a ball bearing.
    Type: Grant
    Filed: April 1, 1992
    Date of Patent: January 5, 1993
    Assignee: Ryobi Motor Products Corp.
    Inventor: Robert E. McCracken
  • Patent number: 5088865
    Abstract: A portable electric router having a depth of cut adjustment mechanism including an adjustment ring which engages a screw thread on the motor housing and rotationally engages the router base. There is further provided an arrangement for preventing relative rotation between the motor housing and the base. The adjustment ring is formed as a split ring with projections adjacent opposite sides of the split, each with a frusto-conical camming surface. A circular clamp knob mounted for threaded rotation on a bolt passing through the projections radially with respect to the router motor housing bears against the camming surfaces so as to squeeze the ring in order to effect a clamping action as the knob is moved inwardly. In order to provide limit stops for preset depths of cut, a pair of stop rings are provided which are angularly rotatable on the router base.
    Type: Grant
    Filed: February 28, 1991
    Date of Patent: February 18, 1992
    Assignee: Ryobi Motor Products Corp.
    Inventors: David E. Beth, Robert E. McCracken, James B. Watson
  • Patent number: 5078557
    Abstract: A portable electric router having a depth of cut adjustment mechanism including an adjustment ring which engages a screw thread on the motor housing and rotationally engages the router base. There is further provided an arrangement for preventing relative rotation between the motor housing and the base. The adjustment ring is formed as a split ring with projections adjacent opposite sides of the split, each with a frusto-conical camming surface. A circular clamp knob mounted for threaded rotation on a bolt passing through the projections radially with respect to the router motor housing bears against the camming surfaces so as to squeeze the ring in order to effect a clamping action as the knob is moved inwardly. In order to provide limit stops for preset depths of cut, a pair of stop rings are provided which are angularly rotatable on the router base.
    Type: Grant
    Filed: February 28, 1991
    Date of Patent: January 7, 1992
    Assignee: Ryobi Motor Products Corp.
    Inventor: Robert E. McCracken
  • Patent number: 5074724
    Abstract: A portable electric router having a depth of cut adjustment mechanism including an adjustment ring which engages a screw thread on the motor housing and rotationally engages the router base. There is further provided an arrangement for preventing relative rotation between the motor housing and the base. The adjustment ring is formed as a split ring with projections adjacent opposite sides of the split, each with a frusto-conical camming surface. A circular clamp knob mounted for threaded rotation on a bolt passing through the projections radially with respect to the router motor housing bears against the camming surfaces so as to squeeze the ring in order to effect a clamping action as the knob is moved inwardly. In order to provide limit stops for preset depths of cut, a pair of stop rings are provided which are angularly rotatable on the router base.
    Type: Grant
    Filed: February 28, 1991
    Date of Patent: December 24, 1991
    Assignee: Ryobi Motor Products Corp.
    Inventor: Robert E. McCracken
  • Patent number: 5029706
    Abstract: A wrench storage arrangement for a router wherein the router housing is formed with a cavity and apertures communicating with the cavity are provided on diametrically opposed sides of the cavity. For storage purposes, the wrench handle is caused to extend through the apertures. Within the cavity are a pair of beams which extend toward each other, each of the beams having a longitudinal rib. The wrench handle is formed with notches on the opposed side surfaces, which notches engage the ribs to provide a retention detent.
    Type: Grant
    Filed: November 23, 1990
    Date of Patent: July 9, 1991
    Assignee: Ryobi Motor Products Corp.
    Inventor: Robert E. McCracken
  • Patent number: D380069
    Type: Grant
    Filed: October 23, 1995
    Date of Patent: June 17, 1997
    Assignee: Waxing Corporation of America, Inc.
    Inventor: Robert E. McCracken