Abstract: A vibration assembly comprising a housing (12) having a central cavity (20) and a pair of side cavities (22, 24) of radially smaller dimension than that of the central cavity, all of which extends axially about an axis (26) from opposed ends of the central cavity. A piston (50) is housed within the cavities (20, 22, 24) and includes a mass (52) disposed within the central cavity (20) and a pair of supports (54, 56) which are disposed within respective ones of the cavity pair (24, 22) and which extend axially from the mass. The supports (54, 56) have radial dimensions which are substantially the same as those of the pair of cavities (22, 24). The mass (52) and the supports have axial dimensions which are substantially less than those respectively of the central cavity means and of the pair of cavities (20, 22, 24) for enabling the piston (50) to move axially within the cavities.

Abstract: A method and apparatus for encoding interframe error data in an image transmission system, and in particular in a motion compensated image transmission system for transmitting a sequence of image frames from a transmitter to a receiver, employ hierarchical entropy coded lattice threshold quantization to increase the data compression of the images being transmitted. The method and apparatus decimate an interframe predicted image data and an uncoded current image data, and apply hierarchical entropy coded lattice threshold quantization encoding to the resulting pyramid data structures. Lossy coding is applied on a level-by-level basis for generating the encoded data representation of the image difference between the predicted image data and the uncoded original image. The method and apparatus are applicable to systems transmitting a sequence of image frames (or other pattern data, such as speech) both with and without motion compensation.

Abstract: A device for detecting a boiling condition of a liquid including a moisture sensor coupled to a detection circuit that provides an output signal, the output signal being coupled to any of various devices for, among things, providing an alarm signal, controlling a heating element, or turning a heating element off.

Abstract: A shaker table (10) includes a table base (12) mounted upon isolating supports (32) and vibrated by vibrators (34, 36). The vibration is conveyed through and damped in a flexure member (16) comprising pairs (26, 28) of honeycomb layers (18, 20, 22, 24) joined and bonded together by sheets (42) utilizing beads of elastomeric adhesive which space the honeycomb layers apart. A segmented top plate (14) is secured to the topmost honeycomb layer and is divided into a plurality of sections or segments (68-82) for separate resonances. In this way, highly damped vibrational resonances of table top plate (14) are obtained.

Abstract: Disclosed is an elongated, generally cylindrical, firing pin for a revolver, the firing pin having first and second end sections separated by an intermediate section. The first section terminates in a chisel tip for impacting a cartridge casing. The chiselled tip is characterized by bevelled sides and a bevelled bottom terminating in an asymmetrical tip end face. The firing pin is axially slidable in a bushing non-rotatably mounted in the revolver frame by a transverse bushing pin. A keyway system cooperates between the intermediate section of the firing pin and the bushing to preclude rotational movement of the firing pin relative to the bushing.

Abstract: A lined hose has a hot melt adhesive bond between the thermoplastic liner and the outer thermoplastic fabric casing. The method of making this lined hose assembly includes the steps of extruding a tubular thermoplastic liner, applying hot melt adhesive to the liner, cooling and flattening the liner with adhesive, inserting the liner with adhesive into a hose casing, and bonding the liner to the thermoplastic casing by applying heat to melt and activate the adhesive and pressure to form the adhesive bond.

Abstract: A thermoplastic adhesive composition that is particularly suitable for use as a hot melt adhesive is disclosed that comprises at least about 10% by weight of a polyether-based thermoplastic polyurethane and another component selected from the group consisting of: (A) a polyamide formed by the condensation of a compound of the formulaYN<Z>NHwhere Z is selected from the group consisting of ##STR1## where R is selected from the group consisting of hydrogen and alkyl groups having from 1 to 6 carbon atoms and R.sub.1 is a divalent aliphatic hydrocarbon group having at least 1 carbon atom, Y is selected from the group consisting of hydrogen, R'NH.sub.

Abstract: A low-cost, multi-axis, quasi-random vibration system includes pneumatically driven vibrators coupled to a resonating, self-attenuating shaker structure to achieve a frequency spectrum and acceleration-level control of a broadband quasi-random vibration output in the frequency range, for example, from 40 Hz to 2 kHz for vibration testing of equipment. The shaker structure consists of flexible interconnected structures whose primary or driving structure acts to mechanically process the vibratory input of the coupled vibrators and whose supporting or driven structure supplies a further vibrational processing to supply the test item with multi-axis multimodal input. Automatic control and pseudo-random modulation of air pressure of the pneumatic vibrators provide closed-loop broadband acceleration-spectrum control and spectrum smearing to enhance frequency content and to prevent the shaker from locking onto any particular vibration frequency, especially a natural frequency of the shaker.

Abstract: A cylinder lock for a cartridge cylinder of a revolver in which an actuator is mounted on the trigger in such a way that when the trigger is pulled, the cylinder lock is retracted from locking engagement with the cylinder by means of a toggle action, thereby providing great mechanical advantage in overcoming a heavy cylinder-lock spring which holds the lock in engagement with the cylinder. The actuator is also arranged so that the cylinder-lock spring is not compressed during the return stroke of the trigger.

Abstract: A revolver in which the cylinder is indexed by the cylinder-indexing hand to a position just before the next chamber is in full alignment with the barrel where the corresponding cylinder notch partially overlaps the cylinder lock. The cylinder lock is provided with a cam-surface on its cylinder-engaging portion that engages the leading edge of the notch for camming the cylinder the rest of the way into its fully indexed position.

Abstract: A firing mechanism in which the hammer and trigger are interconnected by gears, so that the hammer can be cocked and fired simply by pulling the trigger in what is commonly referred to as double-action. The hammer is mounted so that it can pivot independently of the gears in order to discharge a cartridge. A sear connects one of the gears to the hammer so that it can be cocked by means of the trigger and then released when the trigger is fully retracted. A safety feature is also provided by mounting the hammer so that it is normally out of alignment with the firing pin and, thereby, can not accidentally discharge the gun. However, when the trigger is pulled the hammer is shifted bodily to bring it into alignment with the firing pin.