Abstract: Beverage dispensing system having a single source of pressure for a plurality of containers of a particular beverage and a dispensing line for each container communicating with a separate tap. Pressure regulating means can be present to accommodate the type of beverage being dispensed from each tap so that beverages having different characteristics can each be dispensed optimally. The taps for a particular beverage are mounted together, and each is provided with a lock, allowing the operator to select which tap will operate at a given time and disable the other taps.

Abstract: A sound detecting device for amplifying distant or weak sounds, including a novel loud sound suppressing circuit for temporarily shunting the amplifier input signal to ground whenever the amplifier output signal exceeds a predetermined amplitude. The microphone, amplifier, and sound suppressing circuit are mounted in a wand shaped much like a flashlight. The wand can be attached to headphones.

Abstract: Tooth positioner comprising several integral tooth engaging portions formed of materials having different hardness, the harder portions of which assist in anchoring the tooth positioner in its proper position in the patient's mouth.Further, a method of making such tooth positioners by enclosing dental counterpart of the mold to form a first portion of the positioner, placing at least one other material into the mold in interfacing relation to the first portion to form a second portion of the tooth positioner, and curing the several materials into an integral body before extracting the positioner from the mold.

Abstract: A rotary latch mechanism for engaging a latch post, for example to latch a vehicle door to its frame. The latch mechanism comprises a rotating cam having a recess to engage or release the latch post. A torsion spring or the like biases the cam for rotation toward the position in which it releases the latch post. A latch bar sliding perpendicular to the plane of rotation of the cam is biased for slidably engaging an abutment on the cam to latch the cam in its engaged position. A handle or other release is provided to retract the latch bar, freeing the cam for rotation to its disengaged position. The mechanism is quite simple and requires only a few moving parts, yet it provides the same functions as other more complex latch mechanisms.

Abstract: A flat plate has an opening in the central portion thereof for receiving a plug which is dimensioned to removably fit within the opening. Fasteners such as screw threads, snap fittings, or the like are provided on the plug and in the opening for removably holding the plug in the opening. Two spikes or pegs of unequal length are removably fastened to the plug and project downwardly therefrom for securing the plate to the ground. The bottom of the plate has recessed portions with a pair of clips being mounted in one of the recessed portions for storing the spikes in a safe, convenient location when the marker is not in use. In one embodiment of the invention, two plugs and two openings are used, one for each of the two spikes.