Abstract: A system and method whereby acoustic signals can be classified and identified as to nature and location of the original signal. The system and method determine from an arbitrary set of signals a signature or other characterizing feature and distinguish signals associated with a plurality of conditions by means of dictionaries comprising atoms of signals.

Abstract: A landscape concealment structure (200) includes a housing (150) formed by shell (100) and a cover panel member (140) coupled to the shell and overlaying an enclosed space (126) into which a utility structure or mechanical device (20) is received to obscure such from view. The shell includes at least a pair of side panel members (120 and 130) coupled to a front panel member (110). The housing is camouflaged by a plurality of artificial foliage members (160) coupled to the housing to take on the appearance of a shrub, tree or other flora. The landscape concealment structure may further include a coupling assembly (180) that has a pivotal coupling (182) for facilitating rotative displacement of at least the shell relative to a base surface (30, 34).

Abstract: An assembling structure of a quick installation/uninstallation switch, including a layout fixing seat formed with a central opening and a transverse insertion slot intersecting the central opening. A locating member is inserted through the transverse insertion slot. The locating member is formed with a central hole corresponding to the central opening. A resilient locating member and at least one lateral projecting section with a guide slope are disposed on the circumference of the central hole. At least one resilient restoring member is disposed between the locating member and the layout fixing seat for restoring the locating member to its home position. A connecting end of a switch main body is fitted in the central opening. A lateral locating section with a guide slope is formed on a circumference of the connecting end corresponding to the lateral projecting section. A locating transverse slot is formed on the circumference of the connecting end.

Abstract: The present invention proposes a voice device for a fire extinguisher. The voice device is installed on a fire extinguisher. The voice device comprises a power source, a control switch, a spring rocking switch, a capacitor, a voice IC, and a sound device. The spring rocking switch is connected to the power source. The voice IC is driven to output a specific signal when the spring rocking switch is on and electricity is conducted. The voice amplifying circuit receives the signal from the voice IC and outputs an amplified signal to the sound device for giving specific voices recorded in the voice IC. When the fire extinguisher is rocked, the voice device will automatically tell the user how to operate the fire extinguisher.

Abstract: A process for manufacturing an Al—Si alloy for use in a vehicle propeller shaft is provided. The Al—Si alloy manufacturing process includes the steps of heating and melting Al—Si alloy where Si contains 13-40 weight percentage (wt %) of the whole alloy, to thereby prepare melt, maintaining the melt at 700-900° C. and then spraying an high pressure inert gas to the melt and rapidly solidifying the same to thereby obtain a forming body, and extruding the forming body at 400-550° C. The physical properties of the Al—Si alloy manufactured by a spray forming process is at least similar to that of the vehicle propeller shafts which have been already known, and also spotlighted as new alloy compositions which can replace the conventional propeller shaft material.

Abstract: A key structure comprises base plate, elastic member, frame and cap wherein the conductive membrane thereof is single-film structure, the contact of the conductive membrane corresponding to each key is of meshed-hook shape (), a venting aperture is provided at the center of the contact. A transparent and insulating layer is arranged upon the conductive membrane to prevent the short circuit of the circuit in the conductive membrane. An opening is provided at the transparent and insulating layer and corresponding to the conductive membrane. Both ends of the elastic member are attached to the cap and the transparent and insulating layer by adhesive. A conductive bump with a conductive layer is provided on the elastic member such that the conductive bump of the elastic member is connected to the contact of the conductive membrane and a closed loop is formed within the key when the cap is pressed down, whereby the signal generated by key stroking action is transmitted to the computer.

Abstract: A handle for a racket includes a handle part from which an engaging section longitudinally extends. A carrier member is mounted to the engaging section and has a plurality of weights received in an outside and/or an end thereof A butt cap is mounted to the carrier member. The carrier member can be replaced with another one having different length so as to change the length of the handle. The numbers and positions of the weights in the carrier member can be adjusted so as to adjust the position of weight of the handle.