Patents by Inventor Roger H. Lapp

Roger H. Lapp 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: 5065974
    Abstract: A device and process for adjusting, locking, and mounting a mirror. The device, in one embodiment, comprises three adjustor bolts which are threadably engaged with a mirror assembly and a support plate. Two locking bolts per adjustor bolt apply torque symmetrically to the adjustor bolt to preserve micro-radian adjustments during the locking process. The invention's design also results in extremely high structural stiffness at the adjustor-locking bolt joints.
    Type: Grant
    Filed: April 16, 1990
    Date of Patent: November 19, 1991
    Assignee: The Johns Hopkins University
    Inventor: Roger H. Lapp
  • Patent number: 5052793
    Abstract: The invention is directed to a device for rapidly attaching glass to a metal support structure without cracking the glass. The invention consists of a C clamp with a force providing screw threadably engaged through a hole in one leg of the C clamp. The force providing screw has a spindle on one end which rides in a channel in the metal support structure. A spring, Belleville washer or other energy storing device is mounted on the spindle and is compressed against the metal support structure by the spindle base when the force providing screw is tightened. The amount of force that can be applied is limited by the combination of the screw head on the force providing screw and the longer length of the channel in relation to the spindle.
    Type: Grant
    Filed: February 10, 1989
    Date of Patent: October 1, 1991
    Assignee: The Johns Hopkins University
    Inventors: Roger H. Lapp, Robert R. Gardner
  • Patent number: 5003687
    Abstract: A process for fabricating a sheathed-helix circular overmoded waveguide bend comprised of an inner helical wound insulated wire, a dielectric lining, and an outer conductor layer surrounding the dielectric lining. The inner winding is wound on a removable hollow rigid core, the dielectric liner or sheath is then molded onto the outer surface of the winding, and outer conductor is then attached to the outer surface of the dielectric liner. The core is made removable (from the helix winding) by coating it with a low melt temperature alloy which is melted by passing hot water through the hollow core.
    Type: Grant
    Filed: May 16, 1988
    Date of Patent: April 2, 1991
    Assignee: The Johns Hopkins University
    Inventors: Roger H. Lapp, Theodore F. Paraska
  • Patent number: 4809918
    Abstract: Wire winding apparatus for winding wire about an arbor having a straight or curved center line and having either a circular or a nearly circular cross-section. The wire winding apparatus includes a frame having two parallel spaced apart triangular shaped ends, a spool holder disposed between the frame ends for holding at least one spool of wire, a wire straightening device disposed between the frame ends for straightening the wire as it comes off the spool, wire laying apparatus disposed between the frame ends having three wheels with flanges for helically laying the wire onto the arbor whereby each turn of the wire is wound nearly perpendicular to the center line of the arbor and an arbor engagement device attached to the frame for engaging the arbor and causing the wire winding apparatus to remain in intimate rotational contact with the arbor.
    Type: Grant
    Filed: November 2, 1987
    Date of Patent: March 7, 1989
    Assignee: The Johns Hopkins University
    Inventor: Roger H. Lapp
  • Patent number: 4298248
    Abstract: An optical element support capable of pivoting an optical element on its izontal and vertical axes. The pivoting adjustments are facilitated by spaced threaded rods screwed into a support element and abutting a surface element extending from a receptacle containing the optical element. The surface element is capable of flexure without causing distortion of the receptacle. The optical element support has a locking element which prevents pivoting in the locking mode.
    Type: Grant
    Filed: May 16, 1980
    Date of Patent: November 3, 1981
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Roger H. Lapp
  • Patent number: 4123757
    Abstract: The present invention relates to a radar sector scan apparatus which reves its direction of scan without causing large current spikes in the scan-producing motor. This result is achieved by switching off the motor before the instant at which the scan direction is reversed and letting the momentum of the antenna (attached to the motor shaft) continue the scan. Spring and bumper means are provided for slowing, stopping, and then reversing the scan while the motor is off. A switching arrangement is provided which switches off and switches on the motor at the appropriate times to effect smooth scanning and scan reversal. The invention also includes automatic start up logic.
    Type: Grant
    Filed: August 16, 1976
    Date of Patent: October 31, 1978
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Roger H. Lapp, Jacob D. Schneider
  • Patent number: 4042933
    Abstract: The present invention relates to a scanning system comprising a three elet reflecting antenna, wherein two of the reflecting elements synchronously counter rotate about axes other than their optical axes in order to generate a linear scan.
    Type: Grant
    Filed: March 19, 1976
    Date of Patent: August 16, 1977
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Roger H. Lapp
  • Patent number: 4041500
    Abstract: According to the present invention, radar rays are reflected off a rotating econdary reflector which is both tilted with respect to and synchronously translated, in simple harmonic motion, in a direction transverse to the axis of rotation of the secondary reflector. The combined effect of the tilting and translating of the secondary reflector is to produce a line scan when the rays from the secondary reflector are reflected off a primary reflector.
    Type: Grant
    Filed: May 12, 1976
    Date of Patent: August 9, 1977
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Roger H. Lapp