Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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US Patent 5005773 - Sonic generator
Estimated Patent Expiration Date:
March 31, 2009Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.AbstractA sonic generator comprises a resonant bar, a housing and magnetic excitation units connected between the resonant bar and the housing. The magnetic excitation units are connected to the bar at highly stressed points using a mounting connection which is a sleeve having an inside diameter slightly greater than the outside diameter of the bar. A resilient elastomer such as urethane is mounted between the sleeve and the resonant member. The sonic generator may be used for grinding purposes and, in particular, may be used to grind material exceptionally fine with reduced power consumption. The bar is substantially unrestrained so as to allow substantially free vibration. | InventorsAssigneeApplicationNo. 332560 filed on 03/31/1989US Classes:241/30, Miscellaneous241/175, Compound movement receptacle366/127, By electrostrictive or magnetostrictive transducer366/600BODINE VIBRATORField of Search366/108, BY VIBRATION366/127, By electrostrictive or magnetostrictive transducer366/600, BODINE VIBRATOR366/114, Vibrator attached to mixing chamber wall or platform366/116, With amplitude or frequency regulator366/110, Of holder for mixing chamber181/113, Seismic wave generation181/142, WAVE GENERATION367/142, Exclusive-type transmitter367/148, Electrically driven underwater bells or sirens367/156, Magnetostrictive367/168, Magnetostrictive367/174, Transducer with diaphragm367/175, Diaphragm with electric driving coil367/176, Transducer with resonant or damping structure310/26, Magnetostrictive310/80, Motion conversion310/81, Unbalanced weight (e.g., vibrators)310/84, Impulse coupling310/103, Magnetic field type310/104, With air-gap shield310/105, Induced or eddy current type310/112, Plural units, structurally united166/72, Above ground actuating means for below ground device175/53, ENLARGEMENT OF EXISTING PILOT THROUGHBORE REQUIRING ACCESSIBILITY TO EXISTING OPPOSITE BORE ENDS TO INSERT AND REMOVE TOOL175/55, TOOL ACTUATION BY REACTION OF ROTATING ECCENTRIC MASS241/1, By operations other than force of contact with solid surface241/30, Miscellaneous241/170, Loose grinding body comminutor (e.g., ball or rod mills)241/184Grinding bodiesExaminersPrimary: Steinberger, Brian S.Attorney, Agent or FirmUS Patent References2468515, 2960317, 3153530, 3645458, 4728837, Variable speed, variable motion, electrically operated vibrator for screening machineryIssued on: 03/01/1988 Inventor: Bhadra4780861Automatic control system for filling beverage containers Issued on: 10/25/1988 Inventor: Stembridge , et al. International ClassB01F 011/02 |
