Abstract: A method and an apparatus for multiple, simultaneous synthesis of compounds. The apparatus includes a reaction block having a heating layer, a cooling layer, each of which may perform both functions, and a collection sump. A plurality of reaction tubes are supported in the reaction block in a matrix. Each reaction tube has a top outlet, a bottom outlet and a filter above the bottom outlet. Spool valves are located to control the bottom outlets of the reaction tubes. Obturators are provided to close the top outlets of the reaction tubes and to provide venting for the reaction tubes. The collection sump alternately may be equipped with individual collection tubes for each reaction tube. Each reaction tube is formed with a restrictive waist and protrusions arranged in a pattern between the waist and its bottom outlet to improve the mixing of the resinous solid supports by creating turbulence.
February 26, 1998
Date of Patent:
June 13, 2000
Bohdan Automation, Inc.
James R. Harness, Larry W. Markus, Tadeusz J. Wozny, Rudy H. Haidle, Kenneth R. Kaufhold
Abstract: An electrical switch has spaced, facing coupler and carrier layers with a set of electrodes formed on the facing surfaces thereof. There is an aperture in the coupler layer. A conductive armature is disposed in the space between the coupler and carrier, aligned with the aperture. The coupler is a magnet and the armature is made of magnetic material so the armature is normally held in engagement with the coupler. A user can press on any part of the armature through the aperture to cause a first portion of the armature to break away from the armature and contact the electrodes on the carrier while a second portion of the armature remains in contact with the coupler. The electrodes are arranged to provide an output which is dependent upon the location of contact with the armature.
Abstract: An electrical switch has a set of electrodes mounted on one side of a carrier. The opposite side of the carrier mounts an actuator having a plunger mounted for reciprocating motion. The plunger carries a coupler in the form of magnets. A conductive armature of magnetic material is disposed on the electrode side of the carrier. When the plunger withdraws the coupler magnets from the carrier, the armature is free to fall out of contact with the electrodes. A retention cover maintains the armature in the vicinity of the carrier such that subsequent movement of the coupler proximate the carrier will draw the armature back into contact with the electrodes.
Abstract: A faucet diverter to be mounted within a portion of a water faucet assembly for controlling water flow to either a faucet spout or a spray discharge includes a body, a chamber within the body, and a water inlet opening into the chamber. There is a spout outlet and a spray outlet connected to the chamber and there is an orifice in the body between the chamber and the spout outlet. A poppet is movable within the body chamber and carries a cone seal adjacent one end to control flow through the orifice to the spout outlet. There is a cup seal carried by the other end of the poppet to control flow to the spray outlet. The cup seal has an outwardly-extending lip formed and adapted to be in contact with a wall of the chamber and the cup seal has a generally annularly disposed recess at the end away from the lip. There are a plurality of outwardly extending projections on the exterior of the cup seal, bearing against the chamber wall, and being located generally in alignment with the recess.