Patents by Inventor David R. Dalton

David R. Dalton 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: 6181067
    Abstract: The present invention relates to a circuit for a portable lighting product such as flashlight, lantern, desk lamp, area light, combination area light and flashlight, front and rear bicycle light, emergency light, night light, rechargeable versions of any of those products previously mentioned, in which several power sources are provided. The invention includes the feature that each power source is electrically isolate from each other by the switch in mechanism or mechanisms, when the portable lighting product is switched to the off condition. The power sources can include single dry cells, or sets of series connected dry cells of any number.
    Type: Grant
    Filed: July 12, 1999
    Date of Patent: January 30, 2001
    Assignee: Eveready Battery Company, Inc.
    Inventor: David R. Dalton
  • Patent number: 6070990
    Abstract: A card light assembly comprising a generally flat polymeric tray having inner and outer surfaces and a pair of ends, a peripheral rim on the inner surface, an electrochemical cell-receiving recess in the inner surface, and a LED-receiving recess at one of the ends, an annular electrical separator and a disc-type electrochemical cell in the cell receiving recess, a LED in said LED-receiving recess, the LED having two leads, one of which is in abutment with the cell and the other of which is spaced from the cell by the separator. A pressure sensitive adhesive label extends over the inner surface, and over the cell, and is adhered to the housing inner surface to thereby retain the separator and cell within the assembly. At least one of the tray and label is flexibly depressible at the separator and cell for pressing the other lead against the cell to temporarily energize the LED.
    Type: Grant
    Filed: May 2, 1997
    Date of Patent: June 6, 2000
    Assignee: Eveready Battery Company, Inc.
    Inventors: David R. Dalton, Peter F. Lynch, David A. Furth
  • Patent number: 6004003
    Abstract: A portable lighting device according to the present invention includes a battery housing, a light source supported at a first end of the battery housing, and a shroud extending outward from the first end of the battery housing circumferentially around the light source. The shroud is preferably formed of a translucent material having a partially-reflective inner surface for reflecting a portion of incident light emitted from the light source in a forward direction while allowing a portion of the incident light to be transmitted through the shroud and dispersed in peripheral directions. The shroud further preferably includes a diffusing outer surface for diffusing the incident light that is transmitted through the shroud. A shroud is preferably integrally formed with a collar portion as used for threading the integrated head structure onto the battery housing. Additionally, a protective lens cover that may include a collimating lens is also integrally formed in this head structure.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: December 21, 1999
    Assignee: Eveready Battery Company, Inc.
    Inventors: David R. Dalton, Peter F. Lynch
  • Patent number: 5944407
    Abstract: An illumination device functioning as both a flashlight and an area table lamp having a flexible neck that connects a light housing to a base. The illumination device includes at least one light source mounted in the light housing for projecting light through either a diffusing lens to function as an area light or a projecting lens to function as a flashlight. An improved flexible neck for an illumination device is also disclosed that has a dampening mechanism and a retaining mechanism disposed in an elongated solid resilient body. The retaining mechanism counters the resilient force of the resilient body to retain a selected position of the flexible neck while the dampening mechanism serves to dampen a bouncing effect that commonly occurs in flexible necks of flashlights.
    Type: Grant
    Filed: July 26, 1996
    Date of Patent: August 31, 1999
    Assignee: Eveready Battery Company, Inc.
    Inventors: Peter F. Lynch, Mark A. Ferguson, Robert L. Naas, David R. Dalton
  • Patent number: 5806961
    Abstract: A rechargeable flashlight having a nightlight is provided comprising in combination a housing, a rechargeable power supply within the housing, first and second lamp assemblies disposed within said housing, a rotating electrical connector attached to the housing to selectively interconnect the rechargeable power supply to an AC power source to recharge the battery. The rotating connector also connecting the second lamp assembly to the rechargeable power supply. In a second position, the rotating electrical connector is disconnected from the rechargeable power supply and interrupts the power to the second lamp assembly.
    Type: Grant
    Filed: April 12, 1996
    Date of Patent: September 15, 1998
    Assignee: Eveready Battery Company, Inc.
    Inventors: David R. Dalton, Peter F. Lynch, Scott W. Osiecki, Mark A. Ferguson, David A. Furth
  • Patent number: 5801247
    Abstract: The present invention relates to processes for the enantioselective synthesis of hydroxypyrrolidines from amino acids. An amino methyl ester is used as the starting material. The ester is reacted with a benziminoethyl ether to produce an oxazoline or thiazoline. Specifically, L-serine methyl ester is used to produce 4-(carbomethoxy)-2-phenyl-.increment..sup.2 -oxazoline, and cysteine is used to produce the corresponding thiazoline. The oxazoline (or thiazoline) can be reduced to an aldehyde by treatment with a slight excess of DIBAL-H. The oxazoline is quenched with alcohol and reacted with (carbomethoxymethylene)triphenylphosphorane, to produce (S)-(+)-methyl (E)- and (S)-(-)-methyl (Z)-3-(4,5-dihydro-2-phenyl-4-oxazolyl)-2-propenoate. The double bond is hydroxylated to yield the diol esters. The resulting diol is then treated with aqueous acid to hydrolyze the oxazoline and recyclize to produce 3,4-dihydroxy-5-hydroxymethylpyrrolidone benzoate.
    Type: Grant
    Filed: January 23, 1997
    Date of Patent: September 1, 1998
    Assignee: Temple University-of the Commonwealth System of Higher Education
    Inventors: David R. Dalton, Yifang Huang
  • Patent number: 4220304
    Abstract: To adapt a new attachment for an electric torch or flashlight of the kind having a generally cylindrical barrel so that it can be magnetically attached to a magnetic surface, an attachment is provided composed of a body shell which is a resilient partial sleeve with one or more magnets secured to it. The shell may be conveniently made from a plastic material tapering in thickness in opposite circumferential directions towards its axially extending edges. The shell snaps over the barrel of the torch and may have an opening for accommodating the switch and the switch housing so as to provide access to the switch and allow precise location of and prevent movement of the shell along the barrel.
    Type: Grant
    Filed: June 26, 1978
    Date of Patent: September 2, 1980
    Assignees: Sonca Industries Limited, Union Carbide Australia Limited
    Inventors: Chung-Chee Wong, David R. Dalton
  • Patent number: D255612
    Type: Grant
    Filed: May 15, 1978
    Date of Patent: June 24, 1980
    Assignees: Sonca Industries Limited, Union Carbide Australia Limited
    Inventors: Chung-Chee Wong, David R. Dalton
  • Patent number: D258011
    Type: Grant
    Filed: July 7, 1978
    Date of Patent: January 20, 1981
    Assignees: Sonca Industries Limited, Union Carbide Australia Limited
    Inventors: Chung-Chee Wong, David R. Dalton
  • Patent number: D394322
    Type: Grant
    Filed: January 6, 1997
    Date of Patent: May 12, 1998
    Assignee: Eveready Battery Company, Inc.
    Inventors: David R. Dalton, John R. Brown
  • Patent number: D395717
    Type: Grant
    Filed: February 4, 1997
    Date of Patent: June 30, 1998
    Assignee: Eveready Battery Company, Inc.
    Inventors: David R. Dalton, Gregory M. Martens
  • Patent number: D396313
    Type: Grant
    Filed: May 6, 1997
    Date of Patent: July 21, 1998
    Assignee: Eveready Battery Company, Inc.
    Inventors: David R. Dalton, John R. Brown
  • Patent number: D400994
    Type: Grant
    Filed: February 4, 1997
    Date of Patent: November 10, 1998
    Assignee: Eveready Battery Company, Inc.
    Inventors: David R. Dalton, Peter F. Lynch, Mark A. Ferguson, Robert L. Naas
  • Patent number: D404153
    Type: Grant
    Filed: May 6, 1997
    Date of Patent: January 12, 1999
    Assignee: Eveready Battery Company, Inc.
    Inventors: David R. Dalton, John R. Brown
  • Patent number: D406369
    Type: Grant
    Filed: February 4, 1997
    Date of Patent: March 2, 1999
    Assignee: Eveready Battery Company, Inc.
    Inventors: David R. Dalton, John R. Brown
  • Patent number: D415850
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: October 26, 1999
    Assignee: Eveready Battery Company Inc.
    Inventors: David R. Dalton, John R. Brown, Michael S. Squires
  • Patent number: D416343
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: November 9, 1999
    Assignee: Eveready Battery Company, Inc.
    Inventors: David R. Dalton, John R. Brown, Michael S. Squires
  • Patent number: D417921
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: December 21, 1999
    Assignee: Eveready Battery Company, Inc.
    Inventors: David R. Dalton, John R. Brown, Michael S. Squires
  • Patent number: D426007
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: May 30, 2000
    Assignee: Eveready Battery Company, Inc.
    Inventors: David R. Dalton, John R. Brown, Michael S. Squires
  • Patent number: D428175
    Type: Grant
    Filed: July 1, 1999
    Date of Patent: July 11, 2000
    Assignee: Eveready Battery Company, Inc.
    Inventors: Peter F. Lynch, Scott W. Osiecki, Timothy R. Fitch, David R. Dalton