1
Frank J Grgach, Everett A Harris: Ultrasonic welding and cutting apparatus. Branson Ultrasonics Corporation, Ervin B Steinberg, Philip J Feig, February 17, 1976: US03939033 (80 worldwide citation)

An ultrasonic welding and cutting apparatus designed for the manufacture of articles made of two superposed sheet materials includes an anvil means which exhibits a raised pattern of welding and cutting surfaces, and bearing surface means for limiting the motion of an ultrasonically vibrating horn t ...


2
Allan J Roberts: Ultrasonic apparatus. Branson Ultrasonics Corporation, Polster Lieder Woodruff & Lucchesi, October 27, 1998: US05828156 (61 worldwide citation)

In an ultrasonic apparatus a plurality of piezoelectric electroacoustic transducers (10, 12) are mechanically coupled to a horn (14) for providing ultrasonic vibrations thereto, and the transducers are energized in parallel from a common electrical power supply (28). In order to avoid the presence o ...


3
Allan J Roberts: Ultrasonic power supply. Branson Ultrasonics Corporation, Polster Polster and Lucchesi, November 27, 1990: US04973876 (52 worldwide citation)

An ultrasonic power supply for driving a piezoelectric transducer at its parallel resonant frequency includes a clamped-mode resonant converter for converting direct current to alternating current and a demodulator, a loop filter and a voltage controlled oscillator in a phase locked loop configurati ...


4
Gary N Flood: Ultrasonic seal and cut method and apparatus. Branson Ultrasonics Corporation, Ervin B Steinberg, Philip J Feig, December 24, 1985: US04560427 (45 worldwide citation)

An ultrasonic seal and cut method and apparatus comprises an ultrasonic sealing and cutting station which includes a horn adapted to be resonant at an ultrasonic frequency and an oppositely disposed anvil having a sealing surface and a cutting surface. As sheet material is passed through the station ...


5
Thomas B Sager: Method of ultrasonically cutting and sealing thermoplastic workpieces particularly a filter. Branson Ultrasonics Corporation, Polster Polster and Lucchesi, April 30, 1991: US05011555 (43 worldwide citation)

A two step process for ultrasonically welding together first and second thermoplastic pieces and welding a membrane between these two pieces. The first piece comprises an annular bead, the second piece comprises an annular energy director. The method comprises first ultrasonically cutting and sealin ...


6
Thomas B Sager: Ultrasonic welding of thermoplastic workpieces. Branson Ultrasonics Corporation, Philip J Feig, Ervin B Steinberg, October 21, 1986: US04618516 (40 worldwide citation)

The method of joining two thermoplastic workpieces by ultrasonic energy along respective confronting surfaces includes providing one workpiece surface with an energy director while the opposing other workpiece surface contacted by the energy director exhibits a rough textured surface, rather than a ...


7
David A Grewell, Justin R Bickford, Donald C Lovett, Paul A Rooney: Light guide for laser welding. Branson Ultrasonics Corporation, Harness Dickey & Pierce, March 4, 2003: US06528755 (38 worldwide citation)

The present invention is directed to a method and apparatus using a light guide for directing a laser beam to a weld zone. The light guide includes an entrance end, an exit end and a flexible body therebetween. The entrance end of the light guide is operatively coupled to a laser source such as a di ...


8
Jean G M Dussault, Robert A Geckle, William L Puskas: Apparatus for cleaning workpieces by ultrasonic energy. Branson Ultrasonics Corporation, Ervin B Steinberg, Philip J Feig, December 27, 1977: US04064885 (37 worldwide citation)

A delicate workpiece, such as a semiconductor wafer is cleaned by supporting the workpiece on a shaft which is rotated. A film of liquid solvent is caused to continuously flow across the exposed workpiece surface while the workpiece is in rotation and ultrasonic energy is applied to the liquid film ...


9
Jean Guy M Dussault, Robert L Polhamus, John E Willey: Method and apparatus for cleaning by ultrasonic wave energy. Branson Ultrasonics Corporation, Polster Polster and Lucchesi, December 25, 1990: US04979994 (36 worldwide citation)

A method and apparatus for cleaning printed electrical circuit boards having surface mount components by ultrasonic energy in the frequency range between 300 kHz and 1.0 MHz. The ultrasonic energy is produced by an array of piezoelectric wafers mounted to the inside surface of an immersible transduc ...


10
Jeffrey L Frantz: Method for processing workpieces by ultrasonic energy. Branson Ultrasonics Corporation, Polster Lieder Woodruff & Lucchesi, July 25, 1995: US05435863 (32 worldwide citation)

An ultrasonic processing method is disclosed wherein during the processing time interval the motional amplitude of the resonating horn and thereby the power to the workpiece is reduced. The reduction in motional amplitude may be in response to a process condition such as a change in dimension of the ...