Patents Represented by Attorney Paul M. Craig, Jr.

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  • Horn unit for a speaker
    Patent number: 3935925
    Abstract: A horn speaker having wide directional characteristics in accordance with the present invention provides a horn having a horn wall the shape of which is formed by connecting a plurality of curves having different flaring constants. The flaring constant of the curve forming a mouth portion of the horn wall is selected so as to be greater than that of the curve forming a throat portion thereof. The mouth portion of the horn wall is shaped so as to have a flaring angle which is formed by the curve at the mouth portion and has no abrupt variation of angle to a baffle plate. The curve at the mouth portion is connected with the curve at the horn wall nearer to the throat portion and having the flaring constant different therefrom at a point at which the differential coefficients of the respective curves substantially coincide with each other.
    Type: Grant
    Filed: November 2, 1973
    Date of Patent: February 3, 1976
    Inventors: Kenji Koiwa, Makoto Kohashi
  • Lamp
    Patent number: D243629
    Type: Grant
    Filed: June 12, 1975
    Date of Patent: March 8, 1977
    Assignee: Saft-Societe des Accumulateurs Fixes et de Traction
    Inventor: Alfred Brych
  • Spoke wheel
    Patent number: D245775
    Type: Grant
    Filed: September 17, 1976
    Date of Patent: September 13, 1977
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventor: Hans A. Muth
  • Motor cycle fairing
    Patent number: D246098
    Type: Grant
    Filed: October 20, 1976
    Date of Patent: October 18, 1977
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventor: Hans A. Muth
  • Tire
    Patent number: D247666
    Type: Grant
    Filed: September 22, 1976
    Date of Patent: April 4, 1978
    Assignee: Pneumatiques Caoutchouc Manufacture et Plastiques Kleber-Colombes
    Inventor: Yvon Maurice Dartois
  • Gun sight
    Patent number: D248310
    Type: Grant
    Filed: September 18, 1973
    Date of Patent: June 27, 1978
    Inventor: Borge Hestehave
  • Y-type fitting for two showerheads
    Patent number: D249276
    Type: Grant
    Filed: April 1, 1976
    Date of Patent: September 5, 1978
    Inventor: Eugene Levin
  • Tire
    Patent number: D251837
    Type: Grant
    Filed: June 27, 1977
    Date of Patent: May 15, 1979
    Assignee: Pneumatiques Caoutchouc Manufacture et Plastiques Kleber-Colombes
    Inventor: Roland Martinet
  • Television receiver
    Patent number: D252204
    Type: Grant
    Filed: April 14, 1977
    Date of Patent: June 26, 1979
    Assignee: Hitachi, Ltd.
    Inventors: Akira Takahashi, Takeshi Abe
  • Combined television and radio receiver
    Patent number: D252684
    Type: Grant
    Filed: April 14, 1977
    Date of Patent: August 21, 1979
    Assignee: Hitachi, Ltd.
    Inventors: Yasusuke Seki, Takeshi Abe
  • Wheel for motor vehicle
    Patent number: D253232
    Type: Grant
    Filed: June 23, 1978
    Date of Patent: October 23, 1979
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventor: Boyke Boyer
  • Sole for footwear
    Patent number: D253319
    Type: Grant
    Filed: February 13, 1978
    Date of Patent: November 6, 1979
    Inventor: Armin A. Dassler
  • Pick-up truck cap
    Patent number: D254905
    Type: Grant
    Filed: March 27, 1978
    Date of Patent: May 6, 1980
    Assignee: Leer, Inc.
    Inventor: John Collins