An alternating pressure pad has two sets of alternately inflatable cells. The alternately inflatable cells overlie additional base cells in a lower layer of the mattress. These base cells are all simultaneously inflated whilst each of the sets of upper cells are repeatedly inflated and deflated in alternation over an inflation and deflation cycle. During a cycle each set of upper cells is deflated at least once while the patient is primarily supported by the other inflated set of cells. During e...

The present invention provides An alternating phase shifting mask (Alt-PSM), that is to be used in a double exposure lithographic process with a light source of 248 nm. The Alt-PSM comprises: (1) a quartz substrate; (2) at least one semi-dense line on the substrate, wherein the semi-dense line is adjacent to a clear region with a width larger than 2 nm on one side and on the other side is adjacent to a dense-line pattern with a narrow pitch; (3) a first phase shifting region, which is located be...

An alternating current generator for vehicles in which the exciting current flowing in the field winding (2) is detected and the current thus detected is suppressed not to exceed the maximum exciting current under the hot condition by the field current limiting circuit (5) for aiming at eliminating the generation of the maximum output under the cold condition to reduce the size of a pulley to result in a reduced vehicle weight and preventing the variation of the maximum output characteristic und...

An alternating pressure pad having at least two sets of alternately inflatable cells, with each cell having a height greater than its width. Each cell having at least one internal membrane arranged to restrict the shape of the cell and divide the cell into two communicating regions wherein the width of the lower of the two regions is greater than the width of the upper of the two regions.

An alternating pressure pad, useful between a mattress and a bed-ridden person for preventing the occurrence of bed sores, defines two separate sets of interdigitated transverse inflatable body support chambers. The support chambers are alternately inflated and deflated to provide alternating areas on his body where a person lying on the pad is supported by the pad. In a leg and foot section of the pad, the support chambers have a smaller inflated diameter than the other chambers of each set to ...

Disclosed is a system for rapid, wireless communication of electrically-generated and detected, serial digital data signals via a plurality of infrared (or other compatible wireless medium) transceivers. Signals are communicated without electrical connection among computers, fax machines, computer peripheral equipment, or may be employed within self-contained communication, control data-acquisition, and/or display systems. The system operates at predetermined maximum data rates and sub-multiples...

One of the driving and driven parts of the coupling is connected to a cylinder (10) and the other to a piston (11) which delimit therebetween two antagonistic chambers (13, 14). The chambers have a substantially constant volume, are filled with a practically incompressible hydraulic liquid, and are interconnected through two unidirectional circuits (18, 19) which have opposite directions and each a substantially constant volume. A distributing device (22) is so arranged as to either bring into a...

A stator includes an integrated yoke with upper and lower insulators provided on upper and lower ends thereof and stator coils directly wound around the insulators and the yoke. Wherein the yoke has an outer annular member and an inner annular member integrally formed therewith. The upper and lower insulators respectively have two outer rings and two inner rings integrally formed therewith corresponding to the outer and inner annular members of the yoke. Whereby the structure of the stator is si...

One of the driving and driven parts of the coupling is connected to a cylinder (10) and the other to a piston (11) which delimit therebetween two antagonistic chambers (13, 14). The chambers have a substantially constant volume, are filled with a practically incompressible hydraulic liquid, and are interconnected through two unidirectional circuits (18, 19) which have opposite directions and each a substantially constant volume. A distributing device (22) is so arranged as to either bring into a...

A vehicular alternating current generator having a base 1 attached with at least one of a brush holder 2 and a voltage regulator and a condenser 5 attached to the base for preventing an electric noise, wherein a main body of the condenser is isolated from an outside atmosphere by a resin 13 and is disposed in a condenser accommodating body 11 while connecting leads 5a of the condenser are exposed to the outside of the condenser accommodating body and a holding portion 10 is formed in the base fo...