Pewa Technic Ag

Haenni & Cie. Ag

Peter A Neukomm

Viktor Augustin

The optical measuring instrument emits a coherent beam of radiation normally to a surface of an object. The scattered radiation generated by the beam of radiation is guided through an optical device to a stationary strip-shaped linear radiation sensor element. The linear radiation sensor element is arranged within a hollow cylinder which is rotatable in an operative position thereof. The hollow cylinder contains a multiple number of slots which traverse the strip-shaped linear radiation sensor element at an acute angle. An evaluation circuit arrangement is connected to the linear radiation sensor element and only generates evaluatable measuring signals during the traversal of one of the slots over a location at the linear radiation sensor element where there occurs a radiation intensity exceeding a predetermined threshold value. Using such measuring instrument it is possible to measure distances with high resolution.

Optical measuring instrument for the contactless measurement of distances

A piston of a gas engine is reciprocatingly guided in a cylinder. A gas inlet valve whose valve closure component consists of a ball is situated in the cylinder head. The ball is pushed open in the top dead-center position of the piston by a protrusion formed on the upper portion of the piston in order to admit propellant gas into an expansion chamber formed by the cylinder. The gas engine must be set into operation by turning a crankshaft. If the piston accidentally lies near top dead-center when starting, the piston must be moved against full gas pressure. In order to alleviate starting, a shut-off device is provided which has a start position and an operational position. The shut-off device connects the inlet side of the gas inlet valve with an air conduit opening into ambient air and obturates a pressurized gas container in the start position. The shut-off device obturates the air conduit and clears a gas supply conduit leading from the pressurized gas container to the inlet side of the gas inlet valve in the operational position. With the help of this shut-off device, it is possible to start even gas motors equipped with gear-reduction transmissions.

Gas engine

A gas supply device contains a pressurized gas container having a plurality of inserted pressure-resistant gas flasks. The gas flasks are partially filled with liquid gas, such as carbon dioxide or nitrous oxide, before being inserted and are closed by an openable closure component. Each closure component of the gas flasks has associated with it an opening device effective at initiation of operational readiness of the gas supply device, at least one of which opening devices opens its associated closure component under the influence of an external force. It is possible to actuate the opening devices associated with the second gas flask and with further gas flasks by the gas escaping from the first opened gas flask. This gas supply device is especially suitable for applications where a large storage capacity is desired.

Gas supply device including a plurality of gas flasks inserted in a

A gas engine with a gas supply device contains a substantially bell-shaped aluminum intermediate housing open on one side and provided with fins on the interior and exterior. A cylinder of the gas engine with good thermal conduction properties and a sleeve accommodating a pressurized gas container having good thermal conduction properties are fastened to this intermediate housing. A gas supply conduit leads from the pressurized gas container to the gas engine. A gas superheater conduit structure is in thermal communication with the intermediate housing and situated at the beginning of the gas supply conduit. The thermal unit formed jointly by the intermediate housing, the cylinder, the sleeve surrounding the pressurized gas container and the gas superheater conduit structure permits operation of the gas engine under all practically arising ambient temperatures without damage to the gas engine, since this thermal unit prevents the gas in the gas engine from condensing back to its fluid or even solid state.

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Wettingen, Switzerland

Peter A Neukomm