Abstract: A clock generation circuit 122 with a selectable non-overlap time period is described for use on an integrated circuit. A master clock signal M which has a latching edge is formed in response to a reference clock signal fclk. A slave clock signal S which has a driving edge is also formed in response to the reference clock signal. The driving edge of slave clock S is delayed by a non-overlap feedback path 504 so that the driving edge is delayed by the non-overlap time period after the latching edge of master clock M. The value of the non-overlap time period is selected by switching delay circuitry 531 in or out of the non-overlap feedback path on signal line 504. A control signal STRSTST is set high or low to select the value of the non-overlap time period. A sense circuit 561 or a scan latch 562 also can select the non-overlap time period.

Abstract: A unitary diaphragm assembly for use in conventional flush valves. The diaphragm assembly has a flexible diaphragm which includes a seating portion and a mounting portion at the outer peripheral edge. A flow ring is positioned adjacent to the seating portion of the diaphragm. An elongated barrel member extends from the diaphragm in a longitudinal direction and includes a plurality of radial guides positioned circumferentially around the outer surface of the barrel member along a portion of the length of the barrel member. A second embodiment has a flexible diaphragm connected to a cylinder slide. The cylinder slide includes a longitudinal barrel member with a relief valve positioned in the interior of the lower portion of the barrel member.

Abstract: A unitary diaphragm assembly for use in conventional flush valves. The diaphragm assembly has a flexible diaphragm which includes a seating portion and a mounting portion at the outer peripheral edge. A flow ring is positioned adjacent to the seating portion of the diaphragm. An elongated barrel member extends from the diaphragm in a longitudinal direction and includes a plurality of radial guides positioned circumferentially around the outer surface of the barrel member along a portion of the length of the barrel member. A second embodiment has a flexible diaphragm connected to a cylinder slide. The cylinder slide includes a longitudinal barrel member with a relief valve positioned in the interior of the lower portion of the barrel member.

Abstract: A belt folding apparatus wherein a first conveyor orientates belt material along one edge for folding over the belt material that is in excess of the desired amount by a pair of vertically asigned discs in cooperation with inclined rollers that complete the turn over or folding operation. A pair of pressing rollers in cooperation with a second conveyor complete the folding process, afterwhich the folded belt is wound up.

Abstract: The clamping preload in a molding machine or the like is set by adjusting the length of tie bars which support two die plates for opening and closing movement and a thrust plate. A clamping mechanism of given stroke is positioned between the thrust plate and one of the disc plates, and operates to close the die plates at one limit of the clamping stroke. With the clamping mechanism set at its limit and the tie bars set to establish a slight spacing between the die plates, the length of the tie bars is adjusted by means of a drive motor until the die plates are in contact without substantial preload. The clamping mechanism then opens the die plates and the drive motor is further energized to adjust the length of the tie bars and bring the die plates closer to one another by an amount corresponding to a preselected preload.

Abstract: The clamping preload in a molding machine or the like is set by adjusting the length of tie bars which support two die plates for opening and closing movement and a thrust plate. A clamping mechanism of given stroke is positioned between the thrust plate and one of the die plates, and operates to close the die plates at one limit of the clamping stroke. With the clamping mechanism set at its limit and the tie bars set to establish a slight spacing between the die plates, the length of the tie bars is adjusted by means of a drive motor until the die plates are in contact without substantial preload. The clamping mechanism then opens the die plates and the drive motor is further energized to adjust the length of the tie bars and bring the die plates closer to one another by an amount corresponding to a preselected preload.

Abstract: An injection molding machine having a ram for injecting a settable material into an associated mold includes a hydraulic actuator formed by a piston and cylinder assembly which displaces the ram during the injection operation. The piston is an unbalanced area piston which permits the ram to be displaced in both a regenerative and a nonregenerative feed mode. Fluid controls for operating the piston and cylinder assembly include a regeneration valve in fluid communication through the cylinder with opposite sides of the unbalanced piston to permit regenerative feed of the piston and ram in one valve position or to permit nonregenerative feed in another valve position. Displacing the ram in the regenerative or nonregenerative modes of operation allows the mold to be filled at different rates or pressures.

Abstract: An injection molding machine having a ram for injecting a settable material into an associated mold includes a hydraulic actuator formed by a piston and cylinder assembly which displaces the ram during the injection operation. The piston is an unbalanced area piston which permits the ram to be displaced in both a regenerative and a nonregenerative feed mode. Fluid controls for operating the piston and cylinder assembly include a regeneration valve in fluid communication through the cylinder with opposite sides of the unbalanced piston to permit regenerative feed of the piston and ram in one valve position or to permit nonregenerative feed in another valve position. Displacing the ram in the regenerative or nonregenerative modes of operation allows the mold to be filled at different rates or pressures.

Abstract: An injection molding machine has two stationary platens interconnected by tie bars and an immediate third platen which is movable on the tie bars. Separable mold portions are mounted respectively on one of the stationary platens and the third platen so that reciprocating movement of the third platen along the tie bars opens and closes the mold portions. A pair of toggle linkage mechanisms positioned at opposite sides of the machine and connecting with the movable third platen and one of the other platens are used to lockup the mold portions when the linkages assume their toggle positions. To move the toggle mechanisms into the toggle positions, a crosshead on slide rods connects with the mechanisms and is pushed away from the third platen at lockup by two piston and cylinder assemblies extending between the platen and the crosshead. The positioning of the cylinders and crosshead minimizes the overall length of the molding machine and permits mold lockup to be triggered more accurately.