A double quantum laser employing volatile monoiodides as the active medium and using a combination of stimulated Raman emission and four wave parametric conversion to generate two pulses suitable for triggering the double quantum amplification process.

Contact formed of single piece of thin sheet metal, using a single thickness of the sheet metal for a flexible blade at one end and multiple folded thicknesses at the other end for a compact rigid post with sharp corners to receive a wrapped-wire termination. The direction in which folded layers extend permits the construction to be adapted to formation of posts of increased rectangular cross section, without alteration of the clearance between adjacent contacts in a multiple-conductor connector...

An actuating device for two or more flow control dampers, utilizing a linkage arrangement which permits one or more of the dampers to be initially opened while the others remain closed, and which also rotates all of the dampers 90.degree. to a fully open position simultaneously.

A multiple-use greeting card comprising a panel bearing a desired greeting message and having a plurality of signature locations on the opposite side thereof. Each signature location includes a signature line and a date line and the arrangement is such that the signature locations comprise a permanent recipient record so that each successive recipient of the card may review the prior travels of the card between prior recipients and such that one or more of the signature locations cannot be remov...

There is disclosed a multiple wavelength infrared spectrometer. It includes an optical chopper and a pendulum-like filter carrier which inserts a plurality of filters sequentially into the radiation beam. Filter changes occur during an opaque period of the chopper and each filter remains in place for a predetermined number of radiation pulses. The radiation passes through the sample and onto a detector which produces an electrical signal. An electronic circuit operates upon the signal so produce...

Disclosed herein is a multiple imagery photograph camera which provides a means for placing multiple displays or pictures upon a single photograph print for utilization, in particular, with embossing machinery in order to manufacture photographic identification cards.

A multiple center punch tool for use in multiple punching, marking, starting and indenting operations as a plurality of center punches, comprises a generally circularly disposed body structure with several punch points of different types of periphery thereof and anvils or striking heads opposed to the punch points. The punch members (points and anvils connected by the tool body) are arranged in sequential order, according to size or type, for convenience in selecting a particular punch and for e...

A multiple-way valve is formed of a valve body which is freely movably mounted in a space within a valve casing in such a way as to connect alternately various inlet and outlet passages in the wall of the casing. The valve body is normally held in position by pressure in the casing on the face of the valve body opposite the passages. In order to shift the valve body, pressure fluid is introduced below the valve body sufficient to lift it off the surface of the casing, whereupon it can be moved t...

A huge control valve has a valve body comprising a block of castable material, such as concrete, and a plurality of pipes imbedded in the block. The pipes extend through the block from end to end. At one end of the block, the pipes are open. At the other end of the block, the pipes are connected to individually actuatable, preferably bistable, valve elements located external to the block. A diverging adapter conduit connects an upstream line conduit to the end of the block where the valve elemen...

Multiple effect evaporator apparatus includes a plurality of evaporator chambers, a plurality of thin-film flow-down type vertical heat exchange tubes the ends of which are connected to partition plates which divide the apparatus into the various evaporator chambers, a vessel disposed above the heat exchange tubes for receiving a solution, pressure difference maintaining means and solution distributing means interposed between the vessel and heat exchange tubes whereby evaporation and uniform di...