Abstract: A rocker switch includes a drive member which is swingable about a fulcrum, a case supporting the fulcrum of the drive member, and an auxiliary switch. The drive member includes a main body, a push-section provided on the main body, a first stopper provided on the main body and positioned between the first push-section and the fulcrum, and a second stopper provided on the main body, the fulcrum being positioned between the first stopper and the second stopper. The case includes a supporter for supporting the fulcrum of the drive member, and first and second contact sections which the first and second stoppers contact non-simultaneously to each other according to a swinging motion of the drive member, respectively. The rocker switch further includes an urging section for urging the first and second stoppers to the first and second contact sections, respectively. The rocker switch generates a small noise when operating, thus providing quietness.
April 22, 2004
Date of Patent:
February 22, 2005
Matsushita Electric Industrial Co., Ltd.
Abstract: A process for dewatering and reducing pathogens in liquid waste sludge having a liquid component and a sludge solids component. Alkaline material is added to the liquid waste sludge. Flocculent may then be mixed with the liquid waste sludge. The liquid waste sludge is then fed into a screw press having a screw. The screw simultaneously heats and dewaters the liquid waste sludge for a sufficient period of time and at a predetermined temperature for the sludge solids component from the screw press to be pasteurized. An apparatus is also provided for carrying out the process for dewatering and reducing pathogens in liquid waste sludge.