Abstract: A method and apparatus for a signaling device includes an audio device that generates either or both an audible output such as a tone and a voice. The output is based upon a status level. The signaling device further includes a light emitting diode (LED) strobe that illuminates in a variety of colors, where the illumination of a specific color is based upon the status level.

Abstract: A multi-status visual signaling device is disclosed that includes a light source, positioned under a lens, that transmits light in a first state, until an input is received that causes the light source to transmit light in a second state. When a solid state light source, for example, a light emitting diode (LED), is utilized, the multi-status visual signaling device of the present invention is easy to maintain because the light source does not have to be replaced frequently.

Abstract: Apparatus and methods allow difficulty accessible sites of a structure to be sand-blasted. Preferred sand-blasting systems are provided which include a sand-blasting fixture to support the a sand-blasting nozzle and a distal portion of the supply hose in such a manner that the spray of grit particulates may be directed against the difficultly accessible site of the structure. The fixture most preferably includes rigid proximal and distal support tubes joined to one another so as to establish an angle therebetween (most preferably about 90°), and a rigid back-lash support member extending outwardly from the distal support tube. In such a manner, the distal portion of the supply hose is movably supported within the proximal and distal support tubes such that the nozzle positioned adjacent to the back-lash support member may be adjustable by means of the distal portion of the supply hose being further advanced into or retracted from within the proximal and distal support tubes.

Abstract: An industrial signaling device having a single module with the capability of emitting different colored lights to indicate the operating condition of a machine. The emitted light can be steady or flashing, and controlled by an external PLC or an onboard microprocessor. The PLC or microprocessor interprets incoming information and causes the color of the light or its flashing pattern to change accordingly. The light source maybe an LED, ionizable gas or flourescent.

Abstract: An alkaline cell having an anode comprising zinc and a cathode comprising manganese dioxide wherein the cathode is located annularly along the inside surface of the cell housing and has a plurality of indentations on the inside of its surface facing the cell interior. Each indentation has a wall defining a channel with an opening thereto running preferably in the direction of the cell's length. The channel and opening facing the cell interior filled with anode material. The cell can have an anode current collector, typically of metal, with at least a portion of its surface extending into the cathode indentation channel. The anode current collector can have a portion of its surface extending from a point within the anode and into the cathode indentation channel through said opening. The cell can include a cathode current collector comprising a sheet of conductive material such as a sheet of metal or graphite placed within the cathode, particularly within thick regions of the cathode.

Abstract: A method for the production of slurries which are uniform in density and consistency. In particular, a method for preparing zinc anode slurries employed in producing anodes for alkaline batteries. The method comprises a bag slurry forming process, using a drum mixer, involving mixing dry anode components within a sealed, inplated, gas-tight, liquid impervious, flexible, collapsible bag; and, then adding a wet component to the bag, collapsing said bag, and tumbling-kneading the components to form a blended slurry.

Abstract: An apparatus for the transfer or conveyance of a slurry and the simultaneous densification thereof through the intermediary of vacuum pumping. Specifically, disclosed is an apparatus for the vacuum pumping of a slurry, particularly a zinc-containing slurry utilized in the preparation of zinc anodes for alkaline batteries, which facilitates the transfer of the slurry and the concurrent densification thereof in conjunction with the elimination of any gas bubbles which are entrapped in the slurry. Also disclosed is a method of transferring and simultaneously densifying a slurry while eliminating entrapped gas bubbles therefrom through the intermediary of a vacuum pumping process utilizing the disclosed apparatus.

Abstract: A system for cementing well casing in a bore hole utilizes only top and bottom cementing plugs. The well casing has on its lower end, an inwardly extending lip to engage a latch on the lower portion of the bottom cementing plug. The bottom cementing plug has a through passage that is covered on the top by a diaphragm and on the bottom by another diaphragm.

Abstract: A quick coupling device for use in cold environments such as the Arctic to joint two shafts in an end-to-end relation which comprises a first hollow cylindrical body on one shaft end which has a cut out portion and carries a hollow, internally threaded stud opposite the cut out portion, and a second hollow cylindrical body carried by the other shaft end which has a corresponding cut out portion so that the first and second bodies can be mated together to form a continuous cylindrical body from one shaft end to the other shaft end, the second cylindrical body having a plate across the cut out portion with an aperture therein which aperture registers with the open end of the stud means when the first and second cylindrical bodies are mated whereby a threaded pin means can then be screwed into the stud means from outside the first cylindrical body and said pin means will extend through said stud means and into the plate aperture to physically join the first and second cylindrical bodies and, therefore, the two s