Abstract:
A mechanism for the powered opening and closing of household panels such as windows and doors comprises a worm drive screw, small enough to be mounted within and along the upper track of a sliding panel. A nut threaded on the drive screw moves axially along the screw when the screw is rotated. Motion of the nut is transmitted to the panel by means of a coupling bolt, slidingly mounted within a cavity in the top of the panel. The bolt slides up to engage the nut for powered operation, and slides down to disengage from the nut during manual operation. The position of the bolt can be secured through locking means. A resilient, dielectric transmission accouplement between the drive screw and the motor provides electrical and vibrational isolation, and scalability. A second extendible bolt mounted on an opposite end of the frame hinders pitch deflection of the panel during powered operation. Worm gearing and a solenoid based brake locks the motor and the position of the nut when no power is applied.
Abstract:
A non-lethal incapacitating device comprises a pair of projectiles and trailing wires packaged in a cartridge mountable on the head of a stungun. The cartridge assembly includes a pair of light and directionally stable and non-invasive projectiles having tubular plastic flares, expanded trailing wire coiled in double layers on a rotating magazine, a simple gas capsule side-piercing mechanism, and a compact housing.
Abstract:
A banner display device where a plurality of banners are mounted end-to-end to form a scroll which is wound on a pair of parallel and spaced-apart rollers, each driven by a motor. Pulse code modulated drive voltages are produced by microprocessor based command and control circuitry to accurately and efficiently turn the motors at speeds which impart proper tensioning of the scroll during winding.
Abstract:
A drilling template for carving into the lateral edge or the jamb of a door, a slot shaped and dimensioned to receive either a lock and its mounting plate or its strikeplate has a series of drill bit bores at regular spaced-apart intervals along a central line, a pair of lateral legs, and mounting holes corresponding to those of the lock or strikeplate. A drill is used to rout the lock blade slot through the drill bit bores. Guides in either side of the bores prevent lateral movement of the bit, but allow slight longitudinal swing to remove material that may remain between holes. The height of the guides may be varied along the length of the template to guide the routing for a slot of more uniform depth. Lateral spacers are provided to align the template against the angled part of the door jamb. A specialized routing drill bit is provided for drilling the strikeplate or lock channel. The bit has central pilot shaft for tracking within the lock blade slot and a removable circular toothed disk. An oblong countersink bit-guiding insert is provided which creates strikeplate or lock mounting plate channels having straighter sidewalls.
Abstract:
A capsule loaded with a pressurized gas has a single front aperture sealed by an internal plug made of resilient material. The cartridge is loaded by placing it inside a pressurized chamber, then drawing the internal plug against the aperture before decompressing the chamber. A self-propelling embodiment comprises an expellable volume of liquid stored in the rear section of the cartridge in contact with its puncturable base, and separated from the pressurized gas by a floating piston. The base is concavely formed into a bell shape to focus the expelled liquid in a rearward direction.
Abstract:
A device for displaying a scrollable banner wherein the single banner pick-up roller used in prior art devices is replaced by a multi-roller spool. Each multi-roller spool comprises at least two rollers connected with spool belts which define a winding area much longer than that of any single roller. The spools are rotatably mounted within a display housing. Motors drive the multi-roller spools. Additional features include: convex style crowned pulleys for automatically centering each of the spool belts, a centrally located roller separator mechanism which gives a convex crown structure to the entire spool itself whereby the banner is automatically centered, and a display housing of far reduced depth.
Abstract:
A scroll displaying mechanism suitable for use in moving advertising displays, chart recorders and tape readers uses a pair of D.C. motors wired to operate under slightly different speed-controlling voltages in order to maintain the displayed part of the scroll between two rollers taut. A simple belt and pulley drive mechanism for each roller assures quiet and vibration-free operation. The viewing time between frame-advance and the scroll direction reversal are controlled by detection of different length markers positioned along one edge of the scroll. Also disclosed is a simple, easily assembled and disassembled display apparatus which allows both vertical and horizontal adjustment of the size of the viewing window frame.
Abstract:
A scroll displaying mechanism suitable for use in moving advertising displays, chart recorders and tape readers uses a pair of D.C. motors wired to operate under slightly different speed-controlling voltages in order to maintain the displayed part of the scroll between two rollers taut. A simple belt and pulley drive mechanism for each roller assures quiet and vibration-free operation. The viewing time between frame-advance and the scroll direction reversal are controlled by detection of different length markers positioned along one edge of the scroll.
Abstract:
A collapsible liquid container is mounted within a pressure chamber, the chamber is pressurized either by an external air pump, or by a manual pump within the wall of the chamber. The pressure inside the chamber causes the wall of the container to collapse as liquid is drawn from it. A check valve mounted in a channel connecting the inside of the pressure chamber to the spout of the container transfers pressurized air into the container when the pressure within the container drops below the pressure in the chamber, in order to evacuate any liquid remaining into the container when the walls have been collapsed to the maximum extent possible.
Abstract:
A grated thin-film surface forms a plurality of successive narrow silvered panels which are oriented to provide a composite and linear mirror. The thin film is mounted against a support whose inward face is a congruent replica of the inside upper section of a vehicle windshield, or sandwiched between the plies of such a support. The reflective surface is covered with a layer of liquid crystal of which the opacity can be electrically adjusted. The plane of each silvered panel is defined by a first transversal angle in reference to the horizon, and by a longitudinal angle in reference with the slant of the underlying inward face section of the support and windshield.