Opfer
John C. Opfer, Chicago, IL US
Patent application number | Description | Published |
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20080266733 | Circuit Testing Closer Apparatus and Method With In-Rush Current Awareness - A circuit testing closer is capable of closing a power distribution circuit and interrupting the resulting current at the next current zero. Upon detecting a fault, the circuit testing closer is operable to open contacts to isolate the fault. Next, the circuit testing closer tests the faulted line to determine whether the fault has cleared. The circuit testing closer may generate a first test signal having a first polarity and a second test signal having a second polarity opposite the first polarity. Generation of the second test signal may be limited to occur when the first test signal indicates a fault. | 10-30-2008 |
John C. Opfer, Chapel Hill, NC US
Patent application number | Description | Published |
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20150294819 | CIRCUIT INTERRUPTERS WITH AIR TRAP REGIONS IN FLUID RESERVOIRS - Circuit interrupting devices, power distribution switchgear assemblies, and pole units for power distribution are provided. A circuit interrupting device includes a solid insulation housing, a disconnect, a window, and an insulating fluid. The solid insulation housing defines a first external opening and a first cavity extending into the solid insulation housing from the first external opening. The disconnect has a moving contact in selective engagement with a stationary contact in the first cavity. The window is secured to the solid insulation housing at the first external opening. The insulating fluid is disposed within the first cavity. The window, the solid insulation housing, or a combination thereof is configured to form a trap region that is in fluid communication with the first cavity and is configured to trap air bubbles in the insulating fluid. | 10-15-2015 |
John D. Opfer, Williamsville, NY US
Patent application number | Description | Published |
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20140005014 | ATHLETIC SPEED TRAINING DEVICE USING BIOFEEDBACK | 01-02-2014 |
Shamai Opfer, Mazkeret Batya IL
Patent application number | Description | Published |
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20090028584 | Device That Enables Blanket Diagnostics And Proof For Web Presses - Example embodiments of systems and methods for performing blanket diagnostics and proofing are disclosed. | 01-29-2009 |
20100059567 | TURN-BAR - A turn-bar for adjusting orientation of a web includes a plurality of roll bars. Positions of at least two bars of the plurality of roll bars are movable with respect to a direction of travel of the web through the turn-bar. An orientation of the web passing through the plurality of bars may be changed by adjusting a position of the at least two bars without removal of the web from the turn-bar. A method of selectively inverting or not inverting a web includes changing a position of at least two roll bars of a turn-bar apparatus with respect to a direction of travel of the web through the turn-bar apparatus, where the web is not inverted by passing through the turn-bar apparatus when the at least two roll bars are in a first position, and the web is inverted by passing through the turn-bar apparatus when the at least two roll bars are in a second position. | 03-11-2010 |
20130063784 | PRINTING SYSTEM WITH IN-LINE FINISHING - A printing system includes a printing station; a finishing line controller for controlling operation of one or more finishing devices arrangeable in-line with the printing station and a first communication link between the printing station and the controller for communicating job commands from the printing station to the finishing line controller to be translated into finishing action commands by the finishing line controller and communicated to said one or more finishing devices. | 03-14-2013 |
20150251458 | MEDIA CUTTING APPARATUS - Media cutting apparatus including a cutter arrangement to cut media along a line perpendicular to the direction of movement of the media, and a first roller to rotate media cut by the cutter arrangement to change the orientation of a longitudinal axis of the media. The cutter arrangement is arranged to cut the media prior to and after rotation by the first roller. | 09-10-2015 |
Shawn A. Opfer, Elizabeth, PA US
Patent application number | Description | Published |
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20140299798 | PINCH VALVE - A pneumatic pinch valve having a main body, a piston supporting a plunger, and a detachable headpiece for receiving a portion of compressible tubing between the plunger and a contoured surface of the headpiece is disclosed. A first safety cap which may restrict access to the plunger when the valve is operated and a manual override handle which may open the plunger are also provided. The pneumatic pinch valve is opened by the injection of gas through an air inlet port to a pneumatic chamber. The headpiece and plunger are configured to compress a portion of flexible tubing in a manner which reduces or eliminates damage to the tubing even after repeated open/close cycles. Further, the pinch valve may be installed onto an existing process system without disruption of fluid flow. Also disclosed is a manual version of the pinch valve. | 10-09-2014 |