1
Staub David E, Foltz Carl L: Variable output nerve locator. Concept, Stein and Orman, August 20, 1974: US3830226 (190 worldwide citation)

An electrically powered nerve locator designed to be used on animal or human bodies comprising an elongated, hollow casing having a conventional direct current power source mounted therein and electrically connected to current regulator means so as to vary the energy output of the locator. A nerve p ...


2
McKenry Robert J, College Michael A: Excavating tool and a bit for use therewith. Kennametal, Crosby Melvin A, August 20, 1974: US3830321 (112 worldwide citation)

An excavating tool and a bit for use therewith in which the bit is of small dimensions and is mounted in a block in which the bit is rotatable and which block is configured in such a manner that it can be welded to various types of holders so that a plurality of blocks and bits mounted on a holder m ...


3
Ling Robin Sydney Mackwood, Lee Alan John Clive: Hip joint prostheses. National Research Development Corporation, Cushman Darby & Cushman, August 20, 1974: US3829904 (107 worldwide citation)

A prosthetic hip cup is provided which is generally similar to the usual basically hemispherical form except that: the inner and outer surfaces have their spherical centres displaced, rather than coincident, to provide a greater wall thickness at the bottom of the cup compared to the side; and the a ...


4
Rowland William P: Retroreflecting signs and the like with novel day-night coloration. Rowland Development Corporation, August 20, 1974: US3830682 (106 worldwide citation)

A retroreflective indicator providing differing day and night coloration is provided by a retroreflective material having a transparent fluorescent dye composition forwardly of the reflective surface which fluoresces light of a first wavelength band and transmits light of a second wavelength band. T ...


5
Madey Marion J: Display table. Poster Products, Johnson Keil Thompson & Shurtleff, August 20, 1974: US3830169 (105 worldwide citation)

A display table is provided having a table top with a top surface to receive articles to be displayed and a front face of substantial vertical depth containing an elongated recess substantially parallel to the top surface and a rigid elongated generally U-shaped member inlaid in said recess and adap ...


6
Chester John E: Surgical headlamp. Edward Weck & Company, Levinson Lawrence S, Smith Merle J, Archer John J, August 20, 1974: US3830230 (99 worldwide citation)

A surgical headlamp is provided which permits several degrees of freedom of movement of a high intensity headlight with respect to a headband worn by a user. The light is connected to the headband via two rotation joints which are connected by a pivot member which permits planar rotation of the head ...


7
Stumpf Joseph G, Andera Joseph F: Cryosurgical device. Frigitronics of Conn, Buckles and Bramblett, August 20, 1974: US3830239 (98 worldwide citation)

A cryosurgical instrument having a thermally insulating housing containing a cartridge partially filled with a low boiling temperature liquefied refrigerant, such as 'Freon' (a mark of DuPont). The cartridge includes a heat conductive tip in contact with the refrigerant and extending from the housin ...


8
Antonevich John N: Output monitored electromechanical devices. Blackstone Corporation, Buell Blenko & Ziesenheim, August 20, 1974: US3830098 (93 worldwide citation)

An electromechanical device comprises a pair of like transducer units affixed to a bar having with the transducers natural frequencies of vibration so that one unit is nearer a node than the other. An impedance is connected in series with each transducer unit, and the two series circuits are paralle ...


9
De Laittre deceased Earle W, Timberg executor William P: Therapeutic pillow. Hansen Conrad A, August 20, 1974: US3829917 (82 worldwide citation)

A therapeutic pillow for head and neck support of a user in a horizontal resting position on a supporting surface wherein a homogeneous, integral, generally elongate pad of resilient foam rubberlike material includes a pair of user supporting lobes on an upper face thereof, the lobes being separated ...


10
Ahmed Adel Abdel Aziz: Relaxation oscillator. RCA Corporation, August 20, 1974: US3831113 (77 worldwide citation)

A voltage comparator compares the voltage across a capacitor which is being charged with a reference voltage of a first value. When the voltage across the capacitor becomes equal to this first value, the comparator causes the reference voltage to switch to a second lower value and, a short time late ...