Alfred Walter has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
Abstract: Apparatus for testing the print through quality of a forms set. The apparatus comprises a horizontal base plate which is adapted to have the forms set laid thereupon. Sleeve means is mounted above the base plate for guiding a hammer for vertical movement to and from a position where its face strikes the forms set disposed on the base plate. Means are provided for releasably locking the hammer at a preselected one of a plurality of heights above the forms set. A raised test sign is provided on either the face of the hammer or on the upper surface of the base plate below the face of the hammer.
Abstract: Various embodiments of a device for gripping elongated objects, such as electrical cords, are disclosed. The device comprises a one-piece, generally C-shaped ring member formed of at least two arcuate ring sections. The sections are hinged together to open and close in directions substantially normal to the longitudinal axis of the object encompassed by the grip. The ring sections have external camming surfaces which engage interior camming surfaces formed in a threaded nut with relatively low friction so that the ring sections are cammed inwardly to impart inwardly directed compressive forces to the object as the nut is tightened. The ring may be used to transmit axially directed forces produced by tightening the nut to a compressible sealing grommet encompassing the object. In such a case, the end of the section leading in the direction of nut rotation is inclined with respect to the longitudinal axis of the object to facilitate closing the ring about the object.
Abstract: A control system for hydraulic presses comprising a plurality of press rams, an intensifier having a primary chamber which is connected by a supply conduit to a pump, and a valve which is associated with the primary chamber and when open permits the liquid under pressure to return through a return conduit into a reservoir, the primary chamber being constantly supplied by the pump with high-pressure liquid at a constant rate, and the valve associated with the primary chamber being controlled to move in synchronism with the reciprocating motion of the press rams so that it is closed during the forward stroke and open during the return stroke of the press rams.