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| Number | Title | Issue Date |
| 7281403 | Production device, in particular a folding press and a method for operating a production device The invention relates to a production unit (1), in particular a bending press, and a method of operating the latter in order to shape workpieces of sheet metal between two press beams (15, 16) equipped with bending tools (36, 37) and displaceabl... | 10/16/2007 |
| 7127931 | Tandem press shuttle area isolation gate system and method of use The present invention is directed to a tandem press shuttle area isolation gate system and its method of use. The system and method of the present invention allows workers to safely enter the shuttle areas between tandem presses concurrently with a die change, there... | 10/31/2006 |
| 7089671 | Circular saw with an improved lower blade guard A circular saw (1) includes a base plate (2) and a saw blade assembly (3) including a lower blade guard (9) for covering a saw blade (6). The blade guard includes a sleeve portion (10) rotatably fitted on a bearing box (8... | 08/15/2006 |
| 6948224 | Automatic stapling method and stapler An automatic stapling apparatus and method is disclosed which may have a stapling mechanism moved by a stapler engaging mechanism into a stapling position in relation to a stack of sheets to be stapled, inserted through a stack insertion opening, and adapted to stap... | 09/27/2005 |
| 6931987 | Vertically retractable door system for a stamping press A vertically retractable door system for a stamping press includes a pair of vertical mounting plates having generally vertical opposing door guide channels with inwardly curved lower portions. A door with windows extends between the plates and includes support bloc... | 08/23/2005 |
| 6752253 | Guard means for machines, more particularly pressbrakes, guillotines, stamping machines and the like A guard device for machines such as pressbrakes, guillotines, stamping machines and the like, in the case of which a first machine part performs working movements toward a second machine part. At least one photoelectric detector, more especially a laser photoelectri... | 06/22/2004 |
| 6737765 | Punch and Press safety system A punch and press system includes a low voltage safety circuit and a high voltage control circuit. The high voltage control circuit is further divided into a high voltage low current region and a high voltage high current region. The high voltage low current region ... | 05/18/2004 |
| 6389860 | Control system for a press brake A press brake machine has a movable ram, a fixed bed, a drive for moving the ram toward and away from the bed, and a control system which controls movement of the ram. The control system includes an emitter which emits a beam of light and a detector assem... | 05/21/2002 |
| 6234291 | Safety device for a workshop machine A safety device for a workshop machine contains a safety screen which is equipped with a powering device in order to lower the screen before the machine starts to operate. The powering device contains friction rolls on opposite sides of the screen and are... | 05/22/2001 |
| 6148504 | Operator safety device for attaching apparatus A cycle of operation of an attaching apparatus begins with determining whether an operator's extremity is in an area in which it can be struck by a downwardly moving ram during attachment of two fasteners to each other and to a material therebetween. If i... | 11/21/2000 |
| 6047634 | Fail-safe automatic sliding operation control apparatus for press The present invention relates to a fail-safe automatic sliding operation control apparatus for a press. The entrance and withdrawal behaviors of an operator's hand relative to danger zones (D, DN) on a bolster of the press are detected by an ou... | 04/11/2000 |
| 5622076 | Portable hydraulic punch A portable, hydraulically operated punch-die unit for fastening together sheet metal members without the use of separate fasteners. The unit is used in a hydraulic system utilizing a two-stage high pressure hydraulic pump having a retractor valve arrangem... | 04/22/1997 |
| 5592733 | High production hardware insertion press incorporating operator and tool protection systems and apparatus Presented is a hardware insertion press of the type for insertion of fasteners in sheet metal. The press incorporates both operator and tool protection systems that prevent the operator from being injured during use of the press, and which prevent the too... | 01/14/1997 |
| 5560290 | Safety apparatus in power press machine A safety apparatus is mounted to the side of a bed of a power press machine on which an operator is positioned for ensuring safety of the operator of the power press machine. The safety apparatus includes a table, for supporting the front end portion of a... | 10/01/1996 |
| 5560466 | Safety guard system for machine having a ram A safety guard system provided for a machine having a ram which is movable toward and away from a work zone and an actuator which is operable for driving the ram through a ram stroke toward the work zone. The safety guard system includes a safety guard mo... | 10/01/1996 |
| 5400677 | Shield for engraving machines A shield for an engraving machine or the like is disclosed that prevents the machine operator from placing his or her fingers in the work area of the machine while the ram of the machine is traveling toward the work area. The shield includes a faceplate t... | 03/28/1995 |
| 5086965 | Fastener press with workpiece protection system A programmable fastener press includes workpiece protection by utilizing punch position and punch contact sensors. The sensors signal a controller which classify portions of the punch's linear travel into multiple zones of operation. One zone is a stop wi... | 02/11/1992 |
| 4699260 | Mounting assembly for protective lighting system for metal forming machine or the like A mounting assembly for detachable connection to a metal forming machine, such as a punch press or the like, including a pair of bracket members pivotally mounted for swingable movement about a vertical axis toward and away from one another with one of th... | 10/13/1987 |
| 4631383 | Machine with automatic finger safety guard An improved machine with automatic finger safety guard includes a machine body having a finger-accessible work space and at least one movable machine component disposed in the work space. An electric motor is connected by leads to a power source and is al... | 12/23/1986 |
| 4586248 | Safety device for arbor of fastening machine The present invention relates to a safety device for an upper die arbor of a fastening machine having a driving sleeve, an upper mold mandrel, a copper sleeve, and a steel sleeve. The driving sleeve has a roller in each of four holes. A flange is formed o... | 05/06/1986 |
| 4583629 | Air operated press guard A safety device for use with machines in which the operator must use his hand or hands to position a work piece in the vicinity of a subsequently descending potentially dangerous element. The mechanism includes a downwardly movable probe which if intercep... | 04/22/1986 |
| 4572346 | Power press ram safety guard with electrical interlock A power press is comprised of a frame, a stationary bed, a ram reciprocally movable toward and away from the bed and a safety guard for preventing movement of the ram toward the ram when the tooling for the press must be repaired or changed. The guard inc... | 02/25/1986 |
| 4570777 | Treadle control A control for a treadle activated machine tool having a driving power and a mechanical treadle linkage connecting the treadle to the driving power. The control comprises at least one sensor for sensing the presence of an operator's hand remote from a work... | 02/18/1986 |
| 4548095 | Barrier guard for shears, presses and the like A barrier guard for a machine having a machine surface including a grille having a plurality of horizontal bars, a plurality of links having first ends pivotally mounting the grille and second ends pivotally mounted on the machine, brackets mounted on the... | 10/22/1985 |
| 4528868 | Barrier guard for shears, presses and the like A barrier guard for a machine having a machine surface including spaced brackets mounted on the machine, spaced elongated links pivotally mounted on the spaced brackets, a grille mounted for sliding movement in first slots in the elongated links, second s... | 07/16/1985 |
| 4527684 | Ram supported sensing shield for power presses A reciprocating sensing shield for use in connection with a power press such as a press break or bending machine is operatively mounted on the press ram for relative vertical movement and is controlled to be positioned to guard the "pinch point" of the di... | 07/09/1985 |
| 4488630 | Movable barrier apparatus A movable barrier apparatus for a power press and the like and having a fluid circuit for controlling operation of a machine tripping device responsive to a predetermined sequence of rotary cam mechanism movements for positively locking the barrier in an ... | 12/18/1984 |
| 4479571 | Protective glove system A guard for protecting the hand or hands of an operator to limit the extension thereof and prevent entry into a hazardous or danger zone of a machine, such as a stamping press or the like, includes a shield in the form of a transparent or partially transp... | 10/30/1984 |
| 4457418 | Safety system A safety system for a power stroke machine including: a probe for sensing an obstruction in the work area; means for moving the probe between an extended position to sense obstructions in the work area and a retracted position; means for detecting the pro... | 07/03/1984 |
| 4424741 | Press machine safety apparatus Safety apparatus for use on press machines of the type including a barrier guard. The apparatus isolates the kinetic energy source from the point of operation by removing a section of the ram whenever the barrier guard opens to provide access to the die a... | 01/10/1984 |
| 4420071 | Safety device for machine having forceful reciprocation A safety device comprising an obstacle-detecting sensor and a plate cam pivotally coaxially mounted on a forceful reciprocation machine which has a stationary block and a reciprocating member adapted for vertical reciprocation thereto, the plate cam and t... | 12/13/1983 |
| 4402389 | Press brake safety device In a mechanical press brake, a photoelectric sensor causes extension of an air cylinder in the linkage between the operating pedal and the clutch lever, thereby disabling the pedal whenever the operator's hand or arm is in dangerous proximity to the machi... | 09/06/1983 |
| 4395641 | Point of operation safety device A point of operation safety device for hydraulic or pneumatic presses. The safety device includes a probe which descends by gravity toward the work area when the operator initiates the cycle. If during the descent of the probe no obstruction is encountere... | 07/26/1983 |
| 4391358 | Hardware press and punch apparatus Presented is a hardware punch and/or press apparatus adapted to assemble fastening devices to or punch holes in hardware for various purposes. The apparatus includes a stationary tool or anvil on which hardware on which an operation is to be performed is ... | 07/05/1983 |
| 4309696 | Trouble detecting unit in an optical security device A trouble detecting unit in an optical security device intentionally produces a state which is equivalent to a state in which the security system is out of order so as to check whether an emergency stop signal is produced or not and judges that the securi... | 01/05/1982 |
| 4279335 | Safety device having machine drive cam control A hollow clearance indicator is mounted for reciprocable movement toward and away from a fixed machine work area. A movable work-forming element is received in an aperture of the clearance indicator to effect an operation on a workpiece in the machine wor... | 07/21/1981 |
| 4232773 | Safety device for mechanical eccentric cam presses A safety device for a mechanical cam press having a ram attached to a vertically extending shaft arranged for reciprocating movement and utilizing a brake and clutch for controlling the reciprocating strokes of the cam, the shaft including a stepped edge ... | 11/11/1980 |
| 4220032 | Power press break guard A reciprocating preferably transparent break guard is disclosed for use in connection with a reciprocating machine, such as a bending machine. Adjustable switching means are operatively associated with the machine for controlling the actuation of a hydrau... | 09/02/1980 |
| 4202433 | Tool protection arrangement for hydraulic presses An arrangement for protecting tools in a hydraulic press against overloading if a foreign object or body is present in a tool space of the hydraulic press. A displacement or travel switch monitors at least a portion of a path of movement of a press ram wi... | 05/13/1980 |
| 4192414 | Hydraulic press tool protection arrangement An arrangement for protecting tools in a hydraulic press against overloading if an object is present in a tool space of the hydraulic press. A displacement switch monitors at least a portion of a path of movement of a press ram with an additional switchin... | 03/11/1980 |
