1
Rene J Perdreaux Jr: Ultrasonic device and method. Cavitron Corporation, Philip H Pohl, Philip Sperber, May 18, 1976: US03956826 (195 worldwide citation)

An ultrasonic hand-held cleaning device having a housing enclosing a casing, an energyzing winding about the casing, and a fluid conduit attached to the interior of the casing. A sleeve is insertably mounted into the end of the casing, and acts to support a connecting body at a spaced distance withi ...


2
David G Wuchinich, Alan Broadwin, Robert P Andersen: Ultrasonic aspirator. Cavitron Corporation, Philip Sperber, December 20, 1977: US04063557 (112 worldwide citation)

Apparatus for the surgical removal of tissue is disclosed comprising a handpiece having a resonant vibrator with a magnetostrictive stack and connecting body encompassing a hollow elongated tool which is ultrasonically vibrated at its tip longitudinally to a peak to peak stroke of at least 0.005 inc ...


3
Edward V Hardway Jr, William H Holtman: Activity and respiration monitor. Cavitron Corporation, Kenneth Olsen, Philip Sperber, July 5, 1977: US04033332 (71 worldwide citation)

A contactless activity and respiration monitor is described which includes a resilient, capacitive pad, which may be a mattress, or a pad used with a mattress, having a capacitor therein responsive to the activity or respiration of a body lying on it. Electronic capacitance sensing circuitry is disc ...


4
Steven N Weiss, Alan Broadwin: Flow control system. Cavitron Corporation, Philip Sperber, Kenneth Olsen, August 16, 1977: US04041947 (57 worldwide citation)

A fluidic control system for use in irrigation and aspiration of the anterior chamber of the eye during ultrasonic emulsification of a cataract therein. The system comprises a handpiece with an (ultrasonically vibrated) hollow tip, the hollow tip being connected to the fluid withdrawal or aspirating ...


5
James W Mahaffey, Charles J Ziegler: Ultraviolet light applicator. Cavitron Corporation, Philip H Pohl, Philip Sperber, July 20, 1976: US03970856 (56 worldwide citation)

A handheld ultraviolet light applicator and power circuit for dental use is disclosed having a U-shaped argon filled glass ultraviolet lamp enclosed in a flat or curved lens and attached to a handle. Lamp excitation is supplied through a shielded cable from a power source having a high reactance tra ...


6
Alan Broadwin, Steven N Weiss, Stanley H Enker: Neurosonic aspirator and method. Cavitron Corporation, Philip Sperber, Kenneth Olsen, April 12, 1977: US04016882 (49 worldwide citation)

Method and apparatus are disclosed for use in surgically removing tumorous neurological tissue which apparatus comprises a handpiece mounting a hollow tool tip vibrating transversely to its long axis in the ultrasonic range, means for introducing fluid adjacent the tool tip to flush the operative si ...


7
Mokhtar S Maklad: Method of fabricating an elliptical core single mode fiber. International Telephone and Telegraph Corporation, John T O Halloran, Philip Sperber, January 22, 1980: US04184859 (25 worldwide citation)

A method of fabricating a low loss single mode optical fiber having an elliptically shaped core comprising subjecting a multi-layered coated substrate having at least a barrier, cladding and core layer to partial collapse, first on one side and then on the other side, to produce an intermediate prod ...


8
Joseph H Morrissy: Liquid crystal cell. International Standard Electric Corporation, John T O Halloran, Philip Sperber, August 28, 1979: US04165922 (19 worldwide citation)

A nematic liquid crystal cell operating in a field effect scattering mode employs a surfactant to provide homogeneous random alignment of the nematic director. Field effect scattering mode operation improves over dynamic scattering mode operation by using an electric field to switch between homeotro ...


9
Thaddeus C Ross: Optical gas analyzer. Cavitron Corporation, Philip Sperber, January 17, 1978: US04069420 (17 worldwide citation)

An optical gas analyzer is disclosed utilizing the infrared absorption principle having a sample chamber and reference chamber with infrared source and detector assembly spaced at opposite ends of and in alignment with the chambers with baffle means provided in cooperating relation with the infrared ...


10
David G Wuchinich, Alan Broadwin: Automatic aspiration apparatus. Cavitron Corporation, Philip Sperber, October 11, 1977: US04052987 (17 worldwide citation)

Apparatus is disclosed for aspiration of the operative site during open site surgery having automatic controls for responsively venting the aspiration system to atmosphere under certain conditions and for overriding the venting as desired comprising a continuously operating pump for providing suctio ...