Patents by Inventor Donald L. Smith

Donald L. Smith 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: 4842892
    Abstract: A method of depositing a delamination bubble-free PECVD thin film n+ amorphous silicon layer, from the decomposition of a gaseous mixture of silane and phosphine, upon a substrate having one or more thin film layers thereon, wherein there is contamination upon the exposed surface of the outer thin film layer, comprising purging the plasma chamber with pure silane gas, igniting the plasma and then introducing the gaseous mixture of silane and phosphine into the plasma chamber to complete the formation of the n+ layer.
    Type: Grant
    Filed: September 29, 1987
    Date of Patent: June 27, 1989
    Assignee: Xerox Corporation
    Inventors: Donald L. Smith, Andrew S. Alimonda
  • Patent number: 4799900
    Abstract: A kit of parts, comprising; a connector shell (7) for a coaxial cable (2) having a tool receiving cavity portion (11) open toward two orthogonal directions, a contact holder (14) and a cable holder (15), an insulative body (70) and a conductive cover (51) for covering the cavity portion (11) of the shell (7), and a conductive ferrule (38) for wedge fit assembly with the cable holder (15), the cover (51) having hooks (52,52) for engaging the shell (7), and the shell (7) having cover supports (12,12) for engaging and deflecting the cover (51) to a bent position.
    Type: Grant
    Filed: April 4, 1988
    Date of Patent: January 24, 1989
    Assignee: AMP Incorporated
    Inventors: Randolph E. Capp, Michael M. Johnescu, Ronald C. Laudig, George W. Michael, Donald L. Smith
  • Patent number: 4799902
    Abstract: A triaxial electrical connecter for terminating a triaxial electrical cable. The connector (10) is manufactured to comprise five major components including a center contact (21), intermediate and outer shell subassemblies (22,23), an intermediate ferrule (24) and a bushing (26), which can be easily assembled and attached to the end of a triaxial cable (12). The center contact (21) and the intermediate and outer shell subassemblies (22,23) include captivation structure for automatically aligning the components with respect to one another during the assembly process. The intermediate and outer shell subassemblies (22,23) include intermediate and outer contacts (41,71) and intermediate and outer insulating members (42,72) which are adapted to be press-fit into their respective contacts (41,71) for easy preassembly of the subassemblies (22,23) without specialized tools.
    Type: Grant
    Filed: August 19, 1987
    Date of Patent: January 24, 1989
    Assignee: AMP Incorporated
    Inventors: Ronald C. Laudig, Donald L. Smith
  • Patent number: 4782350
    Abstract: Amorphous silicon (aSi) voltage-controlled, variable capacitors (varactors) are utilized as rf amplitude modulators, such as for amplitude modulating the rf applied to an acoustic ink printhead. Large area fabrication processes are employed for vertically integrating these varactors with such printheads or other devices.
    Type: Grant
    Filed: October 28, 1987
    Date of Patent: November 1, 1988
    Assignee: Xerox Corporation
    Inventors: Donald L. Smith, Scott A. Elrod
  • Patent number: 4772222
    Abstract: A kit of parts, comprising; a connector shell (7) for a coaxial cable (2) having a tool receiving cavity portion (11) open toward two orthogonal directions, a contact holder (14) and a cable holder (15), and a conductive cover (51) for covering the cavity portion (11) of the shell (7), and a conductive ferrule (38) for wedge fit assembly in the cable holder (15), the cover (51) having hooks (52,52) for engaging the shell (7) and the shell (7) having cover supports (12,12) for engaging and deflecting the cover (51) to a bent position.
    Type: Grant
    Filed: October 15, 1987
    Date of Patent: September 20, 1988
    Assignee: AMP Incorporated
    Inventors: Ronald C. Laudig, Randolph E. Capp, George W. Michael, Donald L. Smith
  • Patent number: 4763852
    Abstract: An oscillating guide roll for use in winding cloth onto a take-up roll distributes the cloth so that the edge or selvage portions which are thickened do not remain in register. A stationary non-rotating shaft has a hollow guide roll mounted thereon. The guide roll both rotates about the shaft, and oscillates relative the longitudinal axis of the shaft. Apparatus entirely enclosed within the hollow guide roll is mounted therein for rotation relative the stationary non-rotating shaft, and actuated solely by rotation of the guide roll about such shaft. Rotation of the guide roll is transmitted to such apparatus at a rotational speed different from that of the guide roll. Thus, registry of the thickened edge portions is avoided without requiring actuation of the apparatus other than by rotation of the guide roll.
    Type: Grant
    Filed: June 16, 1987
    Date of Patent: August 16, 1988
    Inventor: Donald L. Smith
  • Patent number: 4688878
    Abstract: An electrical connector (1, 2) for twin axial cable (100,100) comprises; a first assembly (4,4) comprised of a conductive outer shell (6,6), a first dielectric body (8,8), a conductive inner shell (10,10), and a second dielectric body (12,12); a second assembly (60,60) for insertion in the outer shell (6,6) and for electrical connection with the inner shell (10,10) comprises a first conductive body (62,62) a conductive ferrule (64,64) on the first conductive body (62,62) for connection with a corresponding electrical conductor (104,104), a third dielectric body (66,66), an electrical contact (70,70) for connection with a corresponding electrical conductor (102,102) of a twin axial cable (100,100), and a second conductive body (72,72) for establishing electrical connection of a conductive sheath (106,106) of a twin axial cable (100,100) and a barrier (108,108) in the outer shell (6,6) for limiting displacement of the conductive sheath (106,106) along the outer shell (6,6).
    Type: Grant
    Filed: January 22, 1986
    Date of Patent: August 25, 1987
    Assignee: AMP Incorporated
    Inventors: Thomas S. Cohen, Ronald C. Laudig, Donald L. Smith
  • Patent number: 4612077
    Abstract: An electrode includes a plurality of nested concentric rings forming plenum chambers. Process gas is fed into the plenum chambers through capillary tubes. The gas is then delivered through slits between the rings into a plasma etching reactor.
    Type: Grant
    Filed: July 29, 1985
    Date of Patent: September 16, 1986
    Assignee: The Perkin-Elmer Corporation
    Inventors: David H. Tracy, Donald L. Smith
  • Patent number: 4523669
    Abstract: This invention relates to a telescopic boom and conveyor apparatus which can be vehicle mounted. An endless conveyor belt is carried by a main boom which itself is telescopic. Optionally, an articulated boom can be attached to the free end of the main boom. Separate means is provided for the support of the main and articulated boom which automatically adjusts during telescopic displacement in order to maintain the main boom and articulated boom at predetermined angles. The angulation of the booms can be changed and the conveyor run while the main boom is undergoing telescopic displacement.
    Type: Grant
    Filed: April 7, 1982
    Date of Patent: June 18, 1985
    Inventor: Donald L. Smith
  • Patent number: 4517264
    Abstract: A metal-hydrogen cell is disclosed in which the durability of the battery is substantially increased and the system mass and volume are reduced. A plate stack within the casing is compressed by a spring which is supported from the casing without support from the terminals. The spring support is external to the cell stack; that is, it does not pass through the stack. Optionally, terminals are positioned at non-axial positions on the casing, extending outwardly from each domed end of the casing at axially offset positions on the domed ends so that the terminals do not extend beyond the length and diameter of the casing. This contributes to the reduction in the effective size of the cell.
    Type: Grant
    Filed: August 24, 1983
    Date of Patent: May 14, 1985
    Assignee: Eagle-Picher Industries, Inc.
    Inventors: Lee E. Miller, Dennis D. Carr, Donald L. Smith
  • Patent number: 4495382
    Abstract: This invention provides a single integrated circuit device which replaces the non-integrated "encapsulated circuit" of the standard prior art telephone set. The circuit of this invention achieves proper D.C. regulation of the telephone line, by presenting one of several possible D.C. impedances to the telephone line when the telephone set is in the off-hook condition. The circuit of this device provides such regulation by varying the gain relationship of the telephone set for various distances from the central switching office, thereby maintaining a rather uniform signal amplitude in a plurality of telephone sets located at various distances from the central switching office. In one embodiment, this is done using a novel regulator substantially completely formed as part of a single integrated circuit chip containing a receiver amplifier, transmitting amplifier, dialing circuitry and ringing circuitry.
    Type: Grant
    Filed: April 23, 1982
    Date of Patent: January 22, 1985
    Assignee: Fairchild Camera and Instrument Corporation
    Inventors: Donald L. Smith, David B. Jones
  • Patent number: 4491735
    Abstract: Means are provided to produce plasma in a chamber. A diaphragm having an externally small aperture permits ions to flow out of the chamber. The ions are focused to produce an ion beam of high current density in a very small area.
    Type: Grant
    Filed: December 15, 1983
    Date of Patent: January 1, 1985
    Assignee: The Perkin-Elmer Corporation
    Inventor: Donald L. Smith
  • Patent number: 4470361
    Abstract: Railway sewing apparatus is disclosed for sewing and piecing together the free ends of two separate sheets of fabric which includes a frame 10 on which a horizontally extending rail A is carried. A sewing unit B is carried for horizontal movement back and forth across the rail and a sewing machine 50 is carried by the sewing unit. A D.C. drive motor 76 and rack and pinion gear drive 18, 82 impart a drive motion for driving the sewing unit B across rail A when energized. Means for driving the sewing machine 50 at a constant sewing speed is provided by a separate A.C. motor 44. An electrical control circuit 100 provides a variable output responsive to the position of the sewing unit on the rail energizing the drive motor as sensed by cams 36, 38 and switches 92, 94.
    Type: Grant
    Filed: March 2, 1982
    Date of Patent: September 11, 1984
    Inventor: Donald L. Smith
  • Patent number: 4422342
    Abstract: A method is provided for flow straightening and sampling gas in the stack of a gas scrubber. In normal operation the gas has a substantially nonaxial flow so as to retain within the stack droplets carried by the gas. A flow straightener having flow straightening panels is assembled in the chamber of the gas scrubber and lifted into the stack. Gas having an axial flow is then sampled. The flow straightener is then removed from the scrubber, and normal operation is resumed.
    Type: Grant
    Filed: March 15, 1982
    Date of Patent: December 27, 1983
    Assignee: Conoco Inc.
    Inventors: Donald L. Smith, Zenon V. Kosowski, Robert R. Marks, Jr.
  • Patent number: 4375704
    Abstract: A unitary assembly is adapted to be attached to a toilet for ventilating odors from the bowl and has an air scoop positionable between the bowl and the seat at the rear of the bowl in communication with the bowl with such air scoop being mounted on the bowl by bracket means attached to the conventional bolts that hingedly attach the seat to the bowl. Such air scoop has a laterally offset communicating duct that supports at its outer end and communicates with a power driven suction blower unit positioned to one side and behind the bowl with a flexible exhaust tube connected to the outlet of such blower unit and positioned vertically within the bowl and provided with a free terminal outlet portion disposed within the normal pool of water in the bowl and positioned behind the trap in the bowl and having opening means disposed in arrangement with the pool of water so as to form a trap in the exhaust tube.
    Type: Grant
    Filed: April 28, 1982
    Date of Patent: March 8, 1983
    Inventor: Donald L. Smith
  • Patent number: 4373510
    Abstract: A venting system for the combustion chamber of an oil or gas-fired heating appliance has an elongate diverter box arranged vertically exteriorly of the heating appliance. Such diverter box has an upper end tightly closed off by an insulated imperforate cover and a relief open lower end closed for safety by a perforate grill in which a safety spill switch is mounted. The interior of the diverter box houses a vertically disposed centrally arranged insulated baffle having an upper end in fume tight engagement with cover and a lower free end terminating substantially above the grill. The baffle divides the box into a flue gas inlet section that is connected at the upper portion of the box to the appliance and a vent gas outlet section that is connected at the upper portion of the box to the chimney flue. The inlet section has a turning vane provided on the end wall just below the lower free end of the center baffle.
    Type: Grant
    Filed: April 17, 1980
    Date of Patent: February 15, 1983
    Inventor: Donald L. Smith
  • Patent number: 4307926
    Abstract: An electrical connector assembly is disclosed for terminating a triaxial or twin axial cable of the type having two center conductors which are dressed for termination to extend forward respective distances free from a dielectric casing, conductive shield, and outer sheath therearound. The assembly includes a center contact, an inner bored body, an inner ferrule, an outer bored body, and an outer ferrule. The center contact is affixed to the end of a forwardmost extending one of the two center conductors and is thereafter inserted into the inner body having preinserted dielectric means for insulating the center contact. The inner ferrule is radially crimped upon a rearward portion of the inner body having a forward uninsulated end of the second cable center conductor position thereagainst.
    Type: Grant
    Filed: January 7, 1980
    Date of Patent: December 29, 1981
    Assignee: AMP Inc.
    Inventor: Donald L. Smith
  • Patent number: 4232843
    Abstract: A lightweight, relatively inexpensive rocket nozzle assembly which is heat resistant, ablative and electrically insulating. The body of the nozzle is molded in fibre reinforced thermosetting resin integrally with a forward metallic retaining ring, a rear metallic fin supporting ring and an electrical contact ring. A graphite throat insert is also provided and helical vanes are integrally molded into the rear portion of the nozzle to effect rotary motion of the exhaust gases. Wrap around fins are secured externally of the nozzle and provided with a retainer ring-shear pin assembly to hold the fins in the closed position for transport, and spring means to deploy the fins after firing and shearing of the shear pins.
    Type: Grant
    Filed: March 30, 1978
    Date of Patent: November 11, 1980
    Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence
    Inventors: Michael N. Clark, Donald L. Smith
  • Patent number: 4200913
    Abstract: A cathode ray tube (CRT) and keyboard display terminal are operated in accordance with the program routines of a microcontroller. The microcontroller includes a random access store which is loadable by the customer during initial program load (IPL) operation to store customer selected program routines for controlling the CRT display and keyboard and for initializing tables in the store which define the customer selected character and symbol set. The tables provide data for determining the functions which are to be performed incident to the depression of each key and since these are customer loadable, the functions can be changed by reinitializing the system. These tables provide the mechanism whereby an operator making use of the keyboard can manually change the functions of each and every key on the keyboard except one key which is dedicated to the function of redefining the functions of other keys.
    Type: Grant
    Filed: April 13, 1977
    Date of Patent: April 29, 1980
    Assignee: International Business Machines Corporation
    Inventors: Eugene Kuhar, Donald L. Smith
  • Patent number: 4184408
    Abstract: A shear pin assembly suitable for use in a rocket retention and release system is provided. Each shear pin has a head and a shank with a passageway extending axially along the length of the shear pin. In the rocket release system, the shear pin connects a shear pin ring to the rear end of the rocket. A hole to receive the shear pin is provided in both the shear pin ring and the rear end of the rocket. The hole in the ring extends completely therethrough and has a diameter less than the diameter of the hole in the rocket. The passageway in the pin has parallel sides in longitudinal cross-section at the head end of the pin and sides which taper inwardly towards the shank end of the pin at the shank end. When the pin is inserted into the holes to connect the ring and rear end of the rocket together, the pin is expanded by a mandrel so that a shank end portion of the pin in the hole of the rocket fills the cross-section of the hole.
    Type: Grant
    Filed: June 13, 1978
    Date of Patent: January 22, 1980
    Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence
    Inventors: Donald L. Smith, Michael N. Clark