21
Douglas Clarence J, Young Walter L, Phillips Jack H: Methods and apparatus for submerged combustion (with air pollution control). Scofield Thomas M, October 8, 1974: US3840002 (57 worldwide citation)

Improvements in submerged combustion evaporators and heaters particularly adapted to the heating and evaporation of various heat sensitive solutions, including both methods and apparatus therefor;Improved apparatus and methods for the discharge of products of combustion from the combustion chamber o ...


22
Berryman William O: Fluid actuated down-hole drilling apparatus. Baker Oil Tools, Kriegel Bernard, October 8, 1974: US3840080 (57 worldwide citation)

A hydraulic drilling motor connectable to a drilling string of drill pipe thereabove and a drill bit therebelow for drilling a bore hole in the earth, the motor having a hollow rotor connected to a hollow drive shaft for attachment to the drill bit, the rotor being rotatable in a stator or housing f ...


23
Bajorek Christopher H, Romankiw Lubomyr T, Thompson David A: Self-biased magnetoresistive sensor. International Business Machines Corporation, Baron George, Jones II Graham S, October 8, 1974: US3840898 (55 worldwide citation)

For high density recording (more than 2000 bits per inch) and magnetic bubble sensing, magnetoresistive heads are being used. To operate them most efficiently, the heads are biased about the most linear range of the R-H plot of the magnetoresistive sensor of the head. Provision is made to have such ...


24
Baumann Frederick William, Rosenberry George Mowry: Low flux density permanent magnet field configuration. General Electric Company, Myles Vale P, October 8, 1974: US3840763 (54 worldwide citation)

A dynamoelectric machine having a number of low flow density, high coercive force permanent magnets mounted in its ferromagnetic core to improve the magnetic field of the machine. The magnets are positioned within a preferred range of angular orientation with respect to the main flux path of the mac ...


25
Zviak Charles, Ghilardi Giuliana: Light stabilized hair dye compositions. L Oreal, Cushman Darby & Cushman, October 8, 1974: US3840338 (54 worldwide citation)

The use of benzylidene camphor to absorb ultraviolet light to stabilize hair dye compositions which contain hair dyeing compounds that are decomposed by exposure to light and cosmetic compositions that contain stabilizing amounts of this compound.


26
Paulson Donald C, Groleau Rodney J: Dynamic pressure control system. Control Process Incorporated, October 8, 1974: US3840312 (51 worldwide citation)

A dynamic pressure control system is provided for controlling cavity pressure in plastic injection molding machines, thermoset transfer molding machines, thermoset injection molding machines, die cast machines, etc. The dynamic pressure control system includes sensing means for sensing pressure of t ...


27
Lanfranconi Antonio, Schafer Wolfgang, Testaguzza Franco, Zanibelli Franco: Closure with fracturable auxiliary container. Doll Gesellschaft Mit Beschrankter Haftung, Diller Brown Ramik & Wight, October 8, 1974: US3840136 (49 worldwide citation)

This disclosure relates to a closure for hermetically sealing bottles, flasks and the like having a peripheral skirt and an end panel, and an auxiliary container internally of the peripheral skirt in generally suspended relationship from the end panel, a product and a cutter housed within the auxili ...


28
Hellenkamp Johann F: Hand operated sprayer. Wobensmith 2nd Zachary T, October 8, 1974: US3840157 (45 worldwide citation)

A hand operated sprayer of the trigger type is disclosed having a body with a vertical spring urged plunger therein from which a dip tube extends into the liquid receptacle and which carries a piston and an inlet check valve in communication with the dip tube, the plunger being positioned by a trigg ...


29
Muller Rolf: Axial air gap, collector-less d-c motor. Papst Motoren kG, Flynn & Frishauf, October 8, 1974: US3840761 (44 worldwide citation)

A stator structure, for example an insulating board, has at least one, preferably two or more flat coils located thereon, transverse to the axis of the motor. An axially magnetized, permanent magnet rotor is arranged to rotate in the field generated by the coils. The coils are periodically energized ...


30
Bowerman William R: Television system for enhancing and tracking an object. Morse Altman Oates & Bello, October 8, 1974: US3840699 (44 worldwide citation)

An image enhancement system is provided for use with television equipment whereby a uniquely coated object within the field of view is enhanced to make it more readily observable to the viewer. A particular application involves coating a hockey puck, football or the like as used in a sporting event ...