1
Tronzo Raymond G: Acetabular cup prosthesis. Jackson Jackson & Chovanes, October 15, 1974: US3840904 (197 worldwide citation)

An acetabular cup prosthesis which has facilities for ready removal. In one form it has grooves to guide a surgical saw on the inside, preferably to cut the prosthesis in quadrants for removal, and also having threaded sockets to insert a tool to remove the quadrants. Additionally or alternatively, ...


2
Maier Elmar: Nail holder assembly. Hilti Aktiengesellschaft, Toren McGeady and Stanger, October 15, 1974: US3841474 (185 worldwide citation)

In a nail holder assembly for use in an explosive charge driven setting device, nails with heads extending transversely outwardly from the shank portion of the nail, are held in spaced relationship on and extending through an elongated belt-like strip. The strip is arranged to form a washer-like mem ...


3
Loughlin Bernard D: System for transmission of auxiliary information in a video spectrum. Hazeltine Research, October 15, 1974: US3842196 (153 worldwide citation)

Described is a system for compatibly transmitting and receiving both a color TV and an add-on signal within the frequency band normally occupied by the TV signal alone. To reduce mutual interference between the two signals the system utilizes an add-on signal whose frequency is preferably between th ...


4
Clemens Jon Kaufmann: Information records and recording/playback systems therefor. RCA Corporation, Whitacre E M, Meagher William H, October 15, 1974: US3842194 (141 worldwide citation)

An information record employs a storage medium comprising a metallized base material having a dielectric coating thereon. The dimensions of an information track contained in a groove in the storage medium vary in accordance with recorded information. The capacitance between an electrode in a pickup ...


5
Tate Thomas E: Distally valved catheter device. Medical Evaluation Devices & Instruments, Tate Thomas E, October 15, 1974: US3841308 (140 worldwide citation)

The disclosure is that of an invention directed to spring guides, catheters, combined guide-catheters or intra-venous feeding tubes in which the distal end is provided with a normally-open proximally-controlled flow shut off valve. The valve is formed as a helically wound spring distal extension wit ...


6
Goodrich Robert S: Counterfeit document detector. Sokolski Edward A, October 15, 1974: US3842281 (133 worldwide citation)

A housing has a structural portion which forms a light shield and another structural portion adjacent to the light shield which forms an easel suitable for supporting a document to be verified such as currency. An ultraviolet lamp is mounted behind the light shield such that the ultraviolet energy t ...


7
Southgate Peter David: Contact array and method of making the same. RCA Corporation, Cohen Donald S, Bruestle Glenn H, October 15, 1974: US3842189 (133 worldwide citation)

A contact array for electrically connecting two electrical devices, such as a radiation detector and a miniaturized electrical circuit, but with a minimum of heat conduction between the devices. Each of the contacts of the array includes at least one metal film attached at one end to one of the elec ...


8
Jones Augustin: Inflatable leakage inhibitor. Rogers Ezell & Eilers, October 15, 1974: US3841304 (132 worldwide citation)

An inflatable balloon-like bulb attached to the end of a check-valved catheter tube, removably attachable to an inflating bulb, with a stop means slidable along the catheter tube, the arrangement being such that when the balloon is deflated on the end of the catheter tube, it may be inserted through ...


9
Walsh Robert J: Process for polishing thin elements. Monsanto Company, Gilster Peter S, October 15, 1974: US3841031 (131 worldwide citation)

A process for the waxless polishing of thin fragile wafers which includes positioning a wafer on a mounting pad having a coefficient of static friction with respect to the wafer such that the wafer may be moved into frictional engagement with a polishing surface without becoming disengaged from the ...


10
Treacle Dennis L: Enterostomy drainage appliance. Frease & Bishop, October 15, 1974: US3841332 (116 worldwide citation)

An enterostomy drainage bag having front and rear walls of flexible moisture-proof material forming a fluid collection chamber therebetween. A stoma-receiving opening is formed in the rear wall and is surrounded by disc means for attaching the bag to the body of a patient and for sealing the opening ...



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