Abstract: A method for the operation of a panel placement system for punching presses wherein a feed slide is moved between the punching die of the punching press and a transfer position located in front of the punching press. A first connection mechanism of the feed slide, in the transfer position, seizes a panel in the rear area to advance it stepwise through the punching press in response to the cycle of said punching press, wherein the panel is gripped exclusively from above in a rear edge area which is located between the rear edge and the surfaces to be punched out.

Abstract: A gas meter includes a housing made of thermoplastic material having an inside wall defining two measuring chambers and a deformable membrane disposed between the two measuring chambers. The deformable membrane is formed from a film of thermoplastic elastomer material bonded to a synthetic fiber sheet. The periphery of the membrane is hot-welded to the wall between the two measuring chambers to form a gas-tight seal between the chambers. A mechanical drive train includes at least one lever having a hinged portion made from a thermoplastic material which is hot-welded to the middle of the membrane. The train drives a mechanical distributor disposed outside the housing.

Abstract: A diaphragm assembly for use in highly corrosive industrial applications includes a metal body subject to corrosion and a diaphragm formed of a corrosion resistant metal. The metal of the diaphragm is metallurgically incompatible with the body metal. The diaphragm is nevertheless hermetically sealed to the body with the aid of a transition member having a first portion of metal which is metallurgically compatible with the body and a second portion of another metal metallurgically compatible with the diaphragm. Both portions are joined together by a sound, molecular bond, as for example, by using explosive bonding techniques. The first portion of the transition member is fusion welded to the body and the diaphragm is similarly welded to the second portion, thereby presenting at the process fluid interface a barrier that consists solely of corrosion resistant metal.