Patents Examined by Peter M. Caun
  • Venetian blind construction
    Patent number: 4334572
    Abstract: A venetian blind comprises a windup drum for a lifting strap firmly fitted to a drive shaft. Lateral hub portions of a drum are provided with teeth which serve as contact surfaces for two setting straps. Supporting twines for tiltable slats are suspended from the setting straps whose both ends are connected to the associated one of the other strap by connecting plates which act as stop members. Bearing brackets of the drive shaft, accommodated in a supporting housing of the blind, are provided at their bottom with guide webs, for the setting straps and the lifting strap. Stop lugs provided on a bearing bracket in the housing, cooperate on one side with the connecting plate and on the other side with an engaging member of setting strap. During lifting of the blind, the lugs limit the open position of the straps, and during lowering of the blind, they set the predetermined oblique position of the slats.
    Type: Grant
    Filed: November 26, 1980
    Date of Patent: June 15, 1982
    Assignee: Griesser AG
    Inventor: Paul Frei
  • Fire and smoke damper
    Patent number: 4334570
    Abstract: A motorized fire and smoke damper for an air passage is disclosed. The damper includes a wrap spring clutch used to automatically open and close a multifold curtain to define an opening in the passage. The clutch is normally connected to a stationary member by a fusible link, which restrains a portion of the clutch to enable the clutch to transmit torque to rotate a windup pulley and thereby raise or open the curtain. In the event of fire, the fusible link melts, whereupon the spring clutch no longer transmits torque and the pulley automatically freewheels to lower or close a raised curtain under its own weight or by spring bias. The passage opening is then closed. When desired, the air passage can be reopened by energizing the clutch to rotate it until it engages an adjacent finger, at which point the spring clutch can again transmit torque to the pulley and open the curtain.
    Type: Grant
    Filed: September 22, 1980
    Date of Patent: June 15, 1982
    Assignee: Reed National Corp.
    Inventor: Rudolph J. Adams
  • Plug for electric cord
    Patent number: D264582
    Type: Grant
    Filed: March 16, 1979
    Date of Patent: May 25, 1982
    Assignee: Noma Canada Ltd.
    Inventor: Douglas Drew
  • Hinged boom arm for a microphone headset
    Patent number: D264587
    Type: Grant
    Filed: August 24, 1979
    Date of Patent: May 25, 1982
    Assignee: Racal Acoustics Limited
    Inventor: Brian A. Lowe
  • Pipe end preparation tool
    Patent number: D264678
    Type: Grant
    Filed: December 3, 1979
    Date of Patent: June 1, 1982
    Assignee: Tri Tool, Inc.
    Inventors: Henry Astle, John E. Pertle
  • Rebar support and nailing block holder
    Patent number: D264682
    Type: Grant
    Filed: March 10, 1980
    Date of Patent: June 1, 1982
    Inventor: David A. Van Doren
  • Wire and plumbing protection device
    Patent number: D264683
    Type: Grant
    Filed: March 14, 1980
    Date of Patent: June 1, 1982
    Assignee: Elkhart Rivet & Register Co., Inc.
    Inventor: Vernon A. Searer
  • Radiator for RF line termination
    Patent number: D264708
    Type: Grant
    Filed: December 12, 1979
    Date of Patent: June 1, 1982
    Assignee: Bird Electronic Corporation
    Inventor: Leo Lesyk
  • Radiator for an RF line termination
    Patent number: D264709
    Type: Grant
    Filed: December 12, 1979
    Date of Patent: June 1, 1982
    Assignee: Bird Electronic Corporation
    Inventor: Leo Lesyk
  • C.A.T.V. Signal splitter
    Patent number: D264710
    Type: Grant
    Filed: May 9, 1979
    Date of Patent: June 1, 1982
    Assignee: TDS, Inc.
    Inventor: David F. Shu
  • Jeweler's shield
    Patent number: D264722
    Type: Grant
    Filed: March 18, 1980
    Date of Patent: June 1, 1982
    Inventors: Michael P. Summers, Kenneth Bishop
  • Transmission for boats
    Patent number: D264724
    Type: Grant
    Filed: December 19, 1979
    Date of Patent: June 1, 1982
    Assignee: AB Volvo Penta
    Inventors: Kjell Borgersen, Lennart Brandt
  • Hand operated vacuum exhauster
    Patent number: D264753
    Type: Grant
    Filed: February 11, 1980
    Date of Patent: June 1, 1982
    Inventor: An C. Wu
  • Holder for skeins of floss
    Patent number: D264758
    Type: Grant
    Filed: March 7, 1980
    Date of Patent: June 1, 1982
    Inventor: Lois J. Walker
  • Electronic system housing for printed circuit boards and power source
    Patent number: D264844
    Type: Grant
    Filed: June 28, 1979
    Date of Patent: June 8, 1982
    Assignee: Inteo Incorporated
    Inventor: Winfree P. Tuck
  • Used syringe receptacle
    Patent number: D264879
    Type: Grant
    Filed: March 27, 1980
    Date of Patent: June 8, 1982
    Inventor: Richard E. Baker
  • Combined rotating cafeteria type food service counter and display shelf
    Patent number: D264907
    Type: Grant
    Filed: August 6, 1979
    Date of Patent: June 15, 1982
    Assignee: B&W Metals Company, Inc.
    Inventor: Donald R. Barnhill
  • Radio transmitter
    Patent number: D264968
    Type: Grant
    Filed: July 23, 1979
    Date of Patent: June 15, 1982
    Assignee: Iwata Electric Co., Ltd.
    Inventor: Keisuke Iwata
  • Apparatus for cleaning drilling mud and fluids
    Patent number: D264974
    Type: Grant
    Filed: February 6, 1980
    Date of Patent: June 15, 1982
    Inventor: Don D. Summers
  • Photographic camera
    Patent number: D264975
    Type: Grant
    Filed: December 10, 1979
    Date of Patent: June 15, 1982
    Assignee: AGFA-Gevaert AG
    Inventors: Norbert Schlagheck, Herbert Schultes, Karlheinz Rubner