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| Number | Title | Issue Date |
| 7367409 | Latch mechanism for pivoting handle assembly of a power tool A latch mechanism for a power tool is disclosed, in which the power tool has a housing (3), a motor provided in the housing, an output shaft adapted to be caused by said motor to actuate a working member, and a handle assembly (2) adapted to pivot rela... | 05/06/2008 |
| 7275322 | Pivoting handle assembly for power tool There is disclosed a power tool comprising a housing (3), a motor provided in the housing and having a rotary output shaft, a reciprocating output shaft adapted to be caused by the motor to execute reciprocating motion to actuate a blade assembly, and a handl... | 10/02/2007 |
| 7236849 | Safety system for power equipment Apparatus and method is disclosed for providing a safety system for power equipment comprising a machine having a lower tool, an upper tool, and a safety controller. The lower tool is electrically isolated from the reversible upper tool. A safety controller is coupl... | 06/26/2007 |
| 7211972 | Power tool with remote stop The present invention is directed to a power tool including a wireless remote stop for terminating the flow of electricity to an electric motor. The electric motor is configured for operating a working element assembly of a power tool, such as an arbor/circular saw ... | 05/01/2007 |
| 7049967 | Safety system for machine tools Safety system for a manufacturing machine provided with at least one tool which can injure the operator, comprising a pair of gloves to be worn by the operator and provided with an outer surface of dielectric material and an electrically conductive inner surface; an... | 05/23/2006 |
| 6698566 | Clutch type safety switch for power tools A clutch safety switch of a power chainsaw includes a safety member slidably connected to the casing and a trigger which is not able to be squeezed when the safety member is not slid away. A gear connected to the power source has engaging recesses and a c... | 03/02/2004 |
| 6575285 | Safety switch for power tools A clutch safety switch of a power chainsaw includes a safety member slidably connected to the casing and a trigger which is not able to be squeezed when the safety member is not slid away. A gear connected to the power source has engaging recesses and a c... | 06/10/2003 |
| 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 |
| 5724737 | Switch mechanism A manual tool is driven by an electric motor, and has a primary handle and a secondary handle arranged at a distance from each other. A switch is situated in the manual tool and can only be switched on by the simultaneous actuation of two contact mechanis... | 03/10/1998 |
| 5697258 | Operation lever mechanism for handle The present invent provides an improvement in the handling and operation of portable working machines, particularly in a loop front handle and an operation lever adjacent to the handle for easy operation. An operation lever mechanism for a handle accordin... | 12/16/1997 |
| 5361644 | Combination control grip for two-hand operation or guided-surface industrial trucks A control panel (24) of an industrial truck is provided, on two sides, with combination control grips (2a, 2b), which can both be rotated in the circumferential direction and deflected vertically, and on which control levers (45a, 45b) are arranged. Signa... | 11/08/1994 |
| 5341036 | Two hand operated machine control station using capacitive proximity switches A machine operator control station circuit which uses capacitive proximity switches to replicate the function of mechanical switches used in prior art control stations. A monitoring circuit for monitoring the "on" state of the capacitive proximity switche... | 08/23/1994 |
| 5319250 | Pushless run bar with electronics A two-hand operator's control station mounted on a common enclosure detects an operator's hands and provides output signals without requiring the operator to push buttons. Such control stations, called pushless run bars, are for use with automatic machine... | 06/07/1994 |
| 5272946 | Safety control system for power operated equipment A safety control system for power operated equipment which ensures operator safety by immediately disconnecting the power drive from a power driven rotating member, such as a toothed feed shaft of a meat skinning machine or a moving blade of a band saw, a... | 12/28/1993 |
| 5235217 | Capacitive press control actuation system In a preferred embodiment, a capacitive switch system including two capacitive switches which must be activated nearly simultaneously to operate a piece of equipment. When one switch is touched, a timing function is activated. If a predetermined length of... | 08/10/1993 |
| 5212621 | Proximity switched machine control method and apparatus A control station for a machine is equipped with capacitive proximity sensors in two locations for sensing the presence of operator's hands at the locations. The sensors are enclosed in a protective housing behind exterior target surfaces forming exterior... | 05/18/1993 |
| 5198702 | Control and safety system for electrically operated devices A control and safety system for electrically operated devices with a cutting tool (9) connected to a reversible electric motor (88), and control means for halting and reversing the movement of said motor comprises a pair of electrically conducting gloves ... | 03/30/1993 |
| 5168173 | Pushless two-hand run bar apparatus A two-hand operator's control station mounted on a common enclosure detects an operator's hands and provides output signals without requiring the operator to push buttons. Such control stations, called pushless run bars, are for use with automatic machine... | 12/01/1992 |
| 5145044 | Two-handle arrangement for a handheld portable tool The invention relates to a two-handle arrangement for a handheld portable tool having a drive motor and equipped with forward and rearward handles for two-handed operation. Each of these handles includes respective actuating elements which can be actuated... | 09/08/1992 |
| 5083973 | Safety method and means for stopping meat skinning machines This invention utilizes a conventional meat skinning machine having a frame, an elongated skinning blade, a rotatable gripping roll closely positioned adjacent the blade, an electrical motor operatively connected to the gripping roll and to a source of el... | 01/28/1992 |
| 5079489 | Method of operating press machine and servo controller therefor In a method of operating a press machine having a servomotor (20) and a servo controller therefor, the tool stays substantially still immediately after the completion of working a workpiece for a period of from 0.05 to 2 seconds and also the speed of the ... | 01/07/1992 |
| 5076411 | Two-handle arrangement for a handheld portable tool The invention relates to a two-handle arrangement for a handheld portable tool having a drive motor and equipped with forward and rearward handles for two-handled operation. Each of these handles includes respective actuating elements which can be actuate... | 12/31/1991 |
| 4965909 | Safety control for power operated equipment A safety control system for power operated equipment ensures operator safety by immediately disconnecting or reversing the power drive from a power driven rotating member such as a circular blade of a meat trimming knife or a toothed feed shaft of a meat ... | 10/30/1990 |
| 4914721 | Safety device A safety device for an apparatus to be manipulated by an operator. The apparatus is connected via a supply line for a supply means to a supply means source. A handgrip is provided to be grasped by the operator for controlling the operation of the apparatu... | 04/03/1990 |
| 4898039 | Throttle lever holding device A throttle lever holding mechanism is disclosed in which an intermediate locking member is provided for at least one of first and second throttle levers. The throttle lever is moved in an operational direction so that the throttle lever is kept under a pr... | 02/06/1990 |
| 4850182 | Radial ground drive and blade clutch control for lawnmower A compact, versatile lawnmower control is provided which is especially useful for holding and releasing ground drive and blade clutch cables and which allow connection and removal of the cable end without dismantling the control, allows the optional inclu... | 07/25/1989 |
| 4814632 | Safety device A safety device for an apparatus to be manipulated by an operator. The apparatus is connected via a supply line for a supply means to a supply means source. A handgrip is provided to be grasped by the operator for controlling the operation of the apparatu... | 03/21/1989 |
| 4794273 | On/off control system for power operated hand tools An electronic ON/OFF control system for use on a powered hand tool to ensure operator safety and ease of operation. The hand tool is driven either by an electric motor driven, flexible drive shaft or a source of pressurized air supplied to the hand tool t... | 12/27/1988 |
| 4621300 | Safety monitoring system for punch press operators This safety monitoring system for punch press operators is designed to prevent the operators from being injured by such presses or other factory equipment. Primarily, it consists of a pair of wrist units which are strapped to the wrists of the operators, ... | 11/04/1986 |
| 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 |
| 4569431 | Dual hand control A dual hand control actuation mechanism for a manually actuated device has a pair of opposed actuating rods that have wedge shaped ends defining forward and rearward camming surfaces to interact with forward and rearward cam surfaces on a cam member posit... | 02/11/1986 |
| 4493377 | Electronic two-hand safety system for power tools To permit operation of the power tool only if both hands of an operator are engaged, the tool is formed with a handle portion which has a sensing surface thereon, electrically coupled to a current flow sensing circuit, preferably including an opto-coupler... | 01/15/1985 |
| 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 |
| 4463636 | Holding fixture and trimmer for PC boards The trimming apparatus and fixture for holding a PC board prior to and during trimming of an upper surface of the PC board utilizes a trimming blade rotated by a variable speed motor. This apparatus includes X and Y motion mechanism moved by hand grips th... | 08/07/1984 |
| 4369869 | Safety device for mechanical or hydraulic presses A cylindrical chamber full of oil, without any valves or inlet/exit ports for this oil. A piston travels in said sealed cylindrical chamber with a rod on either side, assembled with sealing rings and provided with a series of peripheral axial holes all of... | 01/25/1983 |
| 4321841 | Press safety device The specification discloses a safety device for presses and other similar machines in which stock material is manually inserted between converging machine parts. A ram and sleeve arrangement cooperates with a collar mounted on the moving portion of the ma... | 03/30/1982 |
| 4298114 | Control circuit for a press A control circuit for a press can perform various control functions simply by electrically detecting two modes of change, i.e. from OFF to ON and from ON to OFF, of a single rotary cam switch mounted on a press. Until reaching a first slide stroke angle a... | 11/03/1981 |
| 4265385 | Manual stock feeder A manual stock feeder apparatus for feeding stock to a machine for processing said stock, said manual stock feeder having a moveable carriage capable of engaging a length of linear stock and capable of sliding along a plurality of parallel linear guide me... | 05/05/1981 |
| 4252228 | Two-hand mechanical control device A mechanism for controlling either momentary or maintained, continuous operation of devices such as valves, presses, machines and other devices which require simultaneous use of two hands by an operator to prevent accidents and injury. The mechanism inclu... | 02/24/1981 |
| 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 |
