Michaels Alan S, Buckles Richard G, Keller Michael P: Ultrasonic nebulizer. Ciotti Thomas E, Mandell Edward L, Sabatine Paul L, May 28, 1974: US3812854 (190 worldwide citation)

A device for the ultrasonic nebulization of liquids. Nebulization takes place in a porous solid body the porosity of which determines the size of the liquid particles generated. The device is especially suitable for nebulizing liquid medicaments for inhalation therapy.

Banko Anton: System for controlling fluid and suction pressure. Surgical Design, Mortimer Harvey W, May 28, 1974: US3812855 (152 worldwide citation)

A system for controlling pressurized fluid and suction pressure to be supplied to an instrument, such as an instrument for performing surgical operations. The system permits a variety of flow configurations to the instrument including either pressurized fluid or suction pressure alone or combination ...

Spindt Charles A, Heynick Louis N: Methods of producing field ionizer and field emission cathode structures. Stanford Research Institute, Faubion Urban H, May 28, 1974: US3812559 (147 worldwide citation)

Field-forming devices primarily useful as field ionizers and field emission cathodes and having as a basic element an array of closely spaced cones with sharp points supported on a substrate (in the most usual case conductive or semiconductive) are disclosed. Preferably, the field-forming structure ...

Oringer Maurice Jules: Dental electrosurgical unit. Sybron Corporation, Roessel Theodore B, Aceto Roger, Krawczyk Charles C, May 28, 1974: US3812858 (140 worldwide citation)

Disclosed is a dental electrosurgical apparatus having means to automatically regulate the proper amount of power needed to cut soft tissues of the body, a timing device to regulate and repeatedly interrupt the period of active current flow and a regulator means that cuts off current flow when the p ...

Isaacson Leland H: Urethra magnetic valve structure. Mason Fenwick & Lawrence, May 28, 1974: US3812841 (123 worldwide citation)

A urethra magnetic valve structure comprising an implantable tubular valve housing to be located in the urethra at its juncture with the bladder. The valve housing has a pair of spaced, inflatable retention collars to be inflated for supporting the valve unit in proper position with a slotted head p ...

Blonder Isaac S: Method of and apparatus for scramble-encoded transmission and decoded reception for over the air and cable subscription television and the like. Blonder Tongue Laboratories, Rines & Rines, Shapiro & Shapiro, May 28, 1974: US3813482 (120 worldwide citation)

This disclosure deals with novel television or similar scrambling-decoding techniques for use in subscription television and the like (STV), involving the transmission of picture signals scrambled by repetitively depressing to blanking level a plurality of sync signals, preferably the vertical, and ...

Wootten John A, Rives George S: Method and apparatus for injecting contrast media into the vascular system. Lear Siegler, Donnelly Maky Renner & Otto, May 28, 1974: US3812843 (114 worldwide citation)

A method and apparatus by which fluid is delivered either sequentially at two different rates or at one rate as desired. Suitable controls are provided for independently selecting such different flow rates and the duration of time of each flow rate, which may either be manually or automatically deli ...

Rockwell Harvey W, Ringland William L: Electric powered wheel. Allis Chalmers Corporation, May 28, 1974: US3812928 (100 worldwide citation)

A compact electric wheel unit using a high torque, moderate speed inside out electric motor and a planetary speed reducer wherein a friction brake is mounted on a stationary ring gear component of the planetary gearing. In one embodiment, lubricating and cooling fluid is circulated through the motor ...

Wuenschel Paul C: Reproducible shot hole apparatus. Gulf Research & Development Company, May 28, 1974: US3812912 (90 worldwide citation)

A reproducible shot hole for geophysical use wherein a deformable metal liner, such as aluminum, of predetermined diameter, wall thickness, and alloy is selected, and the annulus between the liner and the hole filled with sand-cement under pressure, so that the lined hole will withstand repeated exp ...

Rodriguez Paul L: I. v. arm rest and support. Brown Jr Edward L, May 28, 1974: US3812851 (88 worldwide citation)

A medical arm support that substantially immobilizes the arm to facilitate intravenous injection of fluid into the arm adjacent the elbow, but which allows a limited amount of natural flexure of the arm at the elbow for patient comfort. A spiral, slightly flexible section joins a panel overlying the ...