An autotensioner comprises a torsion coil spring interposed between a base and a rocking arm, and a tubular bushing provided between an inside surface of the base and an outside surface of the rocking arm. The torsion coil spring pushes and biases the rocking arm toward the bushing, and brings the pushing direction substantially in coincidence with the axial load direction of the force, acting on a stepped bolt supporting the rocking arm, from a belt. When the belt tension becomes high, the arm ...

A thin loudspeaker is provided that produces a superior frequency response and a diffuse acoustical pattern using magnetic drivers, acoustical plates, or a combination of magnetic drivers and acoustical plates. The invention contains a specially designed crossover network and a novel enclosure design. The novel enclosure includes a septum and cross bracing which enables the invention to realize superior performance in a thin loudspeaker design. The invention encompasses methods for improving the...

A compact, thin switch of a simple contact structure to be operated for switching operations by an external pressure comprises a base, four stationary contacts arranged on the base and isolated from each other, a curved, self-resetting first movable contact plate formed of a conductive spring material, and mounted on the base, and a curved, second movable contact plate formed of a conductive spring material, and put on top of the first movable contact plate. The first movable contact plate is di...

A keyboard is constructed so that a ratio of a dimension between a first latching portion of a first lever and a pivotally supporting portion thereof to a dimension between this pivotally supporting portion thereof and a second latching portion thereof is equal to a ratio of a dimension between a first latching portion of a second lever and another pivotally supporting portion thereof to a dimension between this pivotally supporting portion thereof and a second latching portion thereof. Thus, wh...

A thin connector has an insulative housing, a plurality of conductive terminals received in the insulative housing, and a shell shielding the insulative housing and the conductive terminals. The shell has partitions accommodated in the insulative housing below the conductive terminals for shielding the conductive terminals thereby effectively reducing cross talking therebetween. The shell forms assembling arms on both sides thereof for interferentially assembled on the assembling holes of the in...

An improved thin switch aims at reducing overall height of switches without shortening existing compression displacement. It has a trigger assembly which includes an upper button with a bracing section housed in a compartment, a coupling trough, and a lower button with compression section held in the coupling trough without exceeding the anchor portion of the coupling trough. The lower button further has a ram section located between the compression section and the elastic element. The upper but...

A thin battery includes a flat battery body having a positive electrode and a negative electrode having an electrolyte layer disposed between the electrodes. A flexible encapsulating bag seals the battery body with a sealing portion. A positive electrode collector tab and a negative electrode collector tab are respectively connected to the positive and negative electrodes. The tabs penetrate the encapsulating bag. At least one of the tabs includes first and second collector tabs and a safety dev...

A thin-client navigation-satellite receiver network collects GPS pseudorange measurements and communicates them from many independent clients on a computer network to a server. The server computes the respective navigation solutions and sends the results back to each client. A client manager at the server includes a client-request handler that interfaces with the network and collects the discrete requests from each of the clients. An assembler builds complete data sets from one to five seconds w...

A thin connector for connecting with cables and mate with a plug connector includes a first housing and a second housing assembled together, and a plurality of conductive terminals received in the second housing. The first housing has a first insulator, a first shell for shielding the first insulator and a longitudinal biasing plate. The second housing has a second insulator and a second shell shielding the second insulator. The conductive terminals have contact ends and pins. When the first hou...

Projector is suggested, including a light source for emitting beams of lights, a rod lens for receiving the beams of lights from the light source for making a distribution of the beams uniform, and a polarization beam converter. The polarization beam converter has a lens part for receiving the beams from the rod lens and focusing onto a plurality of focusing points, and a polarization beam split array. The polarization beam split array receives the beams inclusive of a P wave and an S wave, and ...