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David Sarnoff, American radio pioneer ; 1921
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| Number | Title | Issue Date |
| 8186256 | Power tool safety mechanisms A sensing mechanism (12) for detecting user contact with an active portion (26) of the power tool (10) is provided. In addition, a safety mechanism (14) for preventing prolonged user contact with the active portion (26) of a power ... | 05/29/2012 |
| 7827889 | Power tool safety mechanisms A sensing mechanism (12) for detecting user contact with an active portion (26) of the power tool (10) is provided. In addition, a safety mechanism (14) for preventing prolonged user contact with the active portion (26) of a power ... | 11/09/2010 |
| 7421315 | Detection system for power equipment A machine is disclosed having a detection subsystem adapted to detect contact between a person and a specified portion of the machine, and to distinguish that contact from contact with other materials. The detection subsystem imparts an electrical signal to a specif... | 09/02/2008 |
| 7373863 | Power tool safety mechanisms A sensing mechanism (12) for detecting user contact with an active portion (26) of the power tool (10) is provided. In addition, a safety mechanism (14) for preventing prolonged user contact with the active portion (26) of a power ... | 05/20/2008 |
| 7258051 | Arrangement for cutting an optical fibre An arrangement for cutting an optical fibre comprises a fibre cutter for cutting the fibre. A motor is provided to operate the cutter. To start a cutting movement, the motor is controlled by a control unit in response to a start signal. The start signal is generated... | 08/21/2007 |
| 7237666 | Multi-position stop mechanism A multi-stop mechanism for providing multiple stop positions between first and second objects that are movable into and out of contact with one another. The multi-stop mechanism of the present invention includes a housing which secures the multi stop mechanism to th... | 07/03/2007 |
| 7197969 | Logic control with test mode for fast-acting safety system Woodworking machines including cutting tools and motors adapted to drive the cutting tools are disclosed. The machines also include a detection system adapted to detect a dangerous condition between the cutting tool and a person, and a reaction system adapted to per... | 04/03/2007 |
| 7156011 | Depth limiting safeguard for channel machining A channel cutting tool may include an arbor that connects to a rotating spindle of a machining tool or a similar spinning part of a machining tool. Two slot cutting blades may be fixedly mounted to the arbor. An inner washer may be fixedly mounted on the arbor betwe... | 01/02/2007 |
| 7137625 | Sheet finisher including means for setting cutting position image forming system including the sheet finisher A sheet finisher includes means for cutting a non-folded edge of at least one folded sheet. Means are used for setting a cutting position in accordance with a preselected length of the at least one folded sheet in a direction of sheet conveyance and a sensed length ... | 11/21/2006 |
| 7098800 | Retraction system and motor position for use with safety systems for power equipment Woodworking machines are disclosed having movable cutting tools for cutting workpieces in a cutting region. The machines include a detection system adapted to detect one or more dangerous conditions between a person and the cutting tools, and a reaction system assoc... | 08/29/2006 |
| 7077039 | Detection system for power equipment A machine is disclosed having a detection subsystem adapted to detect contact between a person and a specified portion of the machine, and to distinguish that contact from contact with other materials. The detection subsystem imparts an electrical signal to a specif... | 07/18/2006 |
| 7059243 | Positive piece engagement indicator for marking tool A positive piece engagement indicator for marking tool is provided in which a metal workpiece is contacted with a workpiece contact probe for providing physical contact with, as well as electrical communication with the metal surface of a workpiece. A test voltage a... | 06/13/2006 |
| 7055426 | Positive piece engagement indicator for marking tool A positive piece engagement indicator for marking tool is provided in which a metal workpiece is contacted with a workpiece contact probe for providing physical contact with, as well as electrical communication with the metal surface of a workpiece. A test voltage a... | 06/06/2006 |
| 6979153 | Deep-grooving insert having stepped cutting edge A deep-grooving chip-forming cutting insert includes a rear mounting portion, a front cutting portion, and a pair of side walls, each side wall extending along the front and rear portions. The front cutting portion includes a front end surface, a top surface, and a ... | 12/27/2005 |
| 6925916 | Two stage punch press actuator with output drive shaft position sensing A press for forming a workpiece with a tooling set includes an actuator assembly carrying a movable half or punch of the tooling set and having a two phase operation. In the first phase the actuator provides relatively low force in moving the punch to an intermediat... | 08/09/2005 |
| 6883408 | Method and device for feeding and cutting a rolled transfer paper with improved operability A paper feeding device and method, wherein a tray including a paper loading unit, a paper feeding device, a paper cutting device is slid out of a main body of an image forming apparatus. When a new rolled transfer paper is loaded in the paper loading unit, the rolle... | 04/26/2005 |
| 6830415 | Chip removal method and chip removal system for NC machine tools A portion (14a, 14b) of a chip remover (14) is defined to be vibratory to give an NC machine tool (MT 1) a vibration transferable onto a surface (FS) of a work (13) under a finishing by the NC machine tool (MT1... | 12/14/2004 |
| 6722238 | Method and device for feeding and cutting a rolled transfer paper with improved operability A paper feeding device and method, wherein a tray including a paper loading unit, a paper feeding device, a paper cutting device is slid out of a main body of an image forming apparatus. When a new rolled transfer paper is loaded in the paper loading unit, the rolle... | 04/20/2004 |
| 6719468 | Positive piece engagement indicator for marking tool A positive piece engagement indicator for marking tool is provided in which a metal workpiece is contacted with a workpiece contact probe for providing physical contact with, as well as electrical communication with the metal surface of a workpiece. A test voltage a... | 04/13/2004 |
| 6405623 | Paper removal device A device for removing paper from a damaged paper roll. The device comprising a rotatable platform to support and rotate the paper roll about a central axis. Additionally, the device comprises a circular saw blade attached to a movable arm attached to a tr... | 06/18/2002 |
| 5974923 | Veneer composer and clipper apparatus A composer clipper apparatus that includes a composer for producing a composed ribbon of veneer from veneer pieces disposed edge-to-edge. A conveyor system transports the ribbon of veneer downstream from the composer. The ribbon of veneer is cut into shee... | 11/02/1999 |
| 5850772 | Method of controlling fly cutting rotary shear During a remaining time which is defined by excluding a positioning settling time ts and a cutting time interval tT during which a cutting edge is brought into contact with a stock from a period of time T allotted to a cutting operat... | 12/22/1998 |
| 5174182 | Machine for feeding and cutting sheet material A machine for feeding and cutting sheet material includes a housing and a framework pivoted on the housing to permit loading of sheet material into the machine. A feed roll is journalled in the housing. A cooperating pressure roll is journalled on the fra... | 12/29/1992 |
| 4920842 | Passive web cutter A web cutter for use in high speed web transport machines has a roller with a hub, two flanges and three knives supported on the hub between the flanges. In one preferred embodiment the web rides on shoulders provided on the flanges. In another embodiment... | 05/01/1990 |
| 4905157 | Control method for shearing bars in bar steel line A control method for shearing bars in a bar steel line provided on the final end side of a bar steel production line so as to shear collectively and simultaneously to desired lengths a plurality of bars obtained by dividing a bar steel blank and arranged ... | 02/27/1990 |
| 4782678 | Method for minimizing scrap loss in making a drawn container A method of minimizing scrap loss in making a drawn container in a multi-die set cupping or end shell press which includes monitoring the sheet for defects before entering the press. The monitor is adapted to detect a defect, send a signal to a control wh... | 11/08/1988 |
| 4768410 | Coded web and associated web handling and working machine An elongated sheet of web material has a longitudinal row of feeding holes in each side edge portion and a plurality of binary codes longitudinally spaced along one side edge portion; and an associated web handling and working machine has sprockets which ... | 09/06/1988 |
| 4765213 | Crooked cut detecting system applicable to a sawing machine A crooked cut detecting system consisting fundamentally of a sensor for sensing irregularities developed on a cut end of a material from which a section was cut away by a sawing machine, an arithmetic means for deriving as a developed crookedness the diff... | 08/23/1988 |
| 4604847 | Medicine package, method of opening the package, and machine for performing the method A medicine package including a reservoir containing the medicine, the package bearing a machine readable code indicative of the characteristics of the medicine contained therein. If from reading the code it is determined that the medicine contained in the... | 08/12/1986 |
| 4481849 | Horizontal bandsaw machine An apparatus is provided for controlling the raising and lowering of a cutting head assembly of a horizontal bandsaw machine. The apparatus comprises a sensing member for sensing the top surface of a workpiece to be cut and an actuating device which is op... | 11/13/1984 |
| 4437370 | Method for the operation of a cross-cutting apparatus In the cutting of a continuous web such as paper or cardboard into sheets employing a cross-cutting apparatus comprising conveyor rolls, a pair of parallel cross-knives and a sheet outfeeder, the improvement in the start-up or restarting of the apparatus ... | 03/20/1984 |
| 4437232 | Electronic parts mounting apparatus An electronic parts mounting apparatus using a band carrier for feeding electronic parts incrementally, the carrier being a strip having many recesses disposed at equal intervals each holding an electronic part and a tape covering the recesses. The appara... | 03/20/1984 |
| 4436007 | Automated feed for a punch press and method of using same A stack of strips of feed stock are placed on an adjustable height table. The strips are positioned on the table by arms which align the stack to the centerline of punching dies in a punch press. A pneumatic actuated head uses vacuum cups to raise the end... | 03/13/1984 |
| 4436078 | Apparatus for cutting stone panels Apparatus for cutting thin laminae of stone, e.g. marble, comprising a saw having two disc blades, a bogie movable beneath the saw and having a pair of vacuum-operated slab-gripping devices each of which is adapted to support a slab upwardly on its edge, ... | 03/13/1984 |
| 4316372 | Protective device for a drawing press A protective arrangement for a drawing press which includes a detector arrangement for detecting at least one of a presence of a workpiece, a semi-finished workpiece, and a correct workpiece feed whereby the drawing press is immobilized or shut down in th... | 02/23/1982 |
| 4286487 | Apparatus for monitoring the delivery of material An apparatus for monitoring the delivery of material from a spool or the like to a machine which is to perform some work upon the material and draws the material from the spool. The apparatus includes a shaft for accommodating and fixedly securing the spo... | 09/01/1981 |
| 4206666 | Press control system A continuous feed stamping machine, press or the like, has a control system for automatically stopping the machine in the absence of material to be stamped. The control system includes a normally closed limit switch which is held open by the presence of m... | 06/10/1980 |
| 4205567 | Apparatus for safety operating presses and the like The present invention relates to an apparatus for detecting mis-strippings in a press having a ram and upper and lower tools for punching workpieces. The apparatus comprises an electric circuit which is closed when the ram and the upper tool are in contac... | 06/03/1980 |
| 4197772 | Automatic feeding apparatus for punch press An auxiliary feeder apparatus for a punch press. The feeder picks up blank stock to be punched, transfers it to a work holding collet where the press punches a circular pattern of spaced holes or slots in the blank to form an electric motor lamination or ... | 04/15/1980 |
| 4142430 | Envelope opener An envelope opener comprising first, second and third shear stations for shearing three edges of an envelope in sequence one edge at a time. Each shear station sequentially aligns the envelope by contacting the edge to be sheared, shears the contacted edg... | 03/06/1979 |