Patents by Inventor Mark R. Marquardt

Mark R. Marquardt 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: 5169152
    Abstract: There is disclosed herein an enlarged and elongated hand grip for use with a golf club. The grip includes an elongated tubular body portion which is elliptically shaped. The body portion includes a flat in the front surface for use in grasping and aligning the club. The body also includes a lower end which includes a flat front portion and an arcuate back portion. This lower end shape is constructed to adapt to the shape of the lower hand so as to permit grasping and control of movement of the grip and club. A plurality of transverse alignment markings are provided on the flat for assisting the user in reproducible finger and hand positioning. Moreover, an alignment marker is provided adjacent the club head end of the grip which is to be generally aligned with the club shaft and head and for assisting the user in alignment of a putt.
    Type: Grant
    Filed: November 27, 1991
    Date of Patent: December 8, 1992
    Inventor: Mark R. Marquardt
  • Patent number: 5042487
    Abstract: An apparatus and method is disclosed for medically examining a patient's spine using a non-invasive technique such as computerized tomography (CT). In this apparatus and method the patient is seated in a generally vertically-oriented chair which is tiltable in a forward and rearward direction, is pivotable relative to a vertical axis, is vertically movable and is stationary so as to adjustably induce gravitational effects on the patient's back. A pivotable chair back can be included for controllably applying additional loads or flexion to the patient's back. An annularly-shaped examination device, such as as CT device, is horitonzally positioned on a support frame over the patient who is aligned with a central opening in the device. The device can be positioned about the patient and oriented horizontally or angularly displaced relative to the horizontal for optimizing or adjusting the generated image.
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: August 27, 1991
    Inventor: Mark R. Marquardt