Quotables
"Without question, the greatest invention in the history of mankind is beer. Oh, I grant you that the wheel was also a fine invention, but the wheel does not go nearly as well with pizza."
Dave Barry
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7743847 | Cam operated devices A number of cam-operated devices such as power tools (10) are described, the tools having a rotary drive device (24) for rotating a drive shaft (36) having a cylinder cam (42) mounted thereon. A pair of cam followers (54) are locat... | 06/29/2010 |
| 7624815 | Powered hammer with vibration dampener A powered hammer includes a housing, a tool holder coupled to the housing and configured to hold a tool, a motor within the housing, and a piston slideably mounted within the housing. A drive mechanism converts rotary output of the motor into a reciprocating motion ... | 12/01/2009 |
| 7398835 | Rotary hammer having both a reciprocating hammer mechanism and a ratcheting hammer mechanism A rotary hammer incorporating both a reciprocating drive for generating a first hammering action transmittable to a tool bit and ratcheting mechanism for generating a second hammering action transmittable to the tool bit. The first hammering action and the second ha... | 07/15/2008 |
| 7360606 | Hand machine tool with a removeable tool holder A hand power tool has a striking element via which a tool (10) in a tool holder (12) can be driven in striking fashion, which the tool holder can be detachably secured—via its body (14)—to a drive part (16) via at least one locking el... | 04/22/2008 |
| 7350592 | Hammer drill with camming hammer drive mechanism A reciprocating drive mechanism for a striker in a hammer, a rotary hammer, or a power drill having a hammer action, includes a sinusoidal cam channel formed on a drive member and a cam follower, in the form of a ball bearing, attached to a driven member which, due ... | 04/01/2008 |
| 7334715 | Electric fastener driver A stationary annular abutting member 14E is provided with a first projecting section that operates as part of a ratchet mechanism. A rotational flange section is provided with a second projecting section that operates as part of the ratchet mechanism. The fir... | 02/26/2008 |
| 7331407 | Vibration reduction apparatus for power tool and power tool incorporating such apparatus A vibration reduction apparatus for use with a hammer tool having a hammer piston is disclosed. The hammer piston is caused to reciprocate in the cylinder by rotation of a gear wheel and crank drive. A cam is mounted around the gear wheel, a counterweight surrounds ... | 02/19/2008 |
| 7225884 | Hand power tool, in particular drilling screwdriver A hand power tool has a tool spindle rotatable by a drive train, a cam device located in the drive train and having two cam discs in engagement with one another for transmitting axial percussion motions to the tool spindle, an overloading coupling located in the dri... | 06/05/2007 |
| 7213659 | Impact drill An impact drill includes a first ratchet together with a spindle and movable in an axial direction, and a second ratchet engageable with the first ratchet. The second ratchet can be moved in the axial direction, and rotated with a predetermined range in a rotational... | 05/08/2007 |
| 7198116 | Wholly air-controlled impact mechanism for high-speed energy-accumulating pneumatic wrench A wholly air-controlled impact mechanism invented for creating a more compact and powerful pneumatic wrench comprises a flying hammer, a pressure impulse generator and a pressure container containing the hammer and the generator. The main part of the flying hammer i... | 04/03/2007 |
| 7152380 | Apparatus and method for repairing popped wallboard nails An apparatus and a method for repairing nail pops in a wallboard is disclosed. The apparatus can be placed In a first state in which it acts as a cutting tool and can be used to cut a bore hole into a wallboard to separate a popped nail from the wallboard. The appar... | 12/26/2006 |
| 7137458 | Impact mechanism for a hammer drill An impact mechanism for a hammer drill, which has a housing and a drill bit protruding outside the housing, is provided. The mechanism includes firstly an impact platform within the housing; the impact platform is in connection with the drill bit for receiving impac... | 11/21/2006 |
| 7134508 | Rotary to reciprocating motion conversion attachment for a power rotary hand tool A preferred embodiment of a rotary tool reciprocating motion conversion attachment for a rotary power hand tool is described which is configured to be attached to a nose portion of the hand tool housing. The attachment has a rotary drive train in a housing that is c... | 11/14/2006 |
| 7096972 | Hammer drill attachment Power tools of the type under consideration include hammer drills, for example, which are electric or battery powered and includes two modes of operation: a rotation mode and a rotation-hammer mode. A manually operable selector lever enables the hammer drill to be s... | 08/29/2006 |
| 7090032 | Electric power tool An electric power tool includes a housing, an inner case and a hammer case. The housing receiving a motor has a pair of half portions. The inner case receives a planetary gear train. An input side of the planetary gear train is connected to a drive shaft of the moto... | 08/15/2006 |
| 7059425 | Reciprocating power tool It is an object of the present invention to provide a reciprocating power tool having a further improved power transmission mechanism for converting a rotating output of a driving motor into linear motion in the axial direction of the tool bit. According to the pres... | 06/13/2006 |
| 7051628 | Impact wrench An impact wrench is disclosed. The wrench has a handle and a housing pivotally secured to one end of the handle. A socket drive cooperates with the housing and the socket drive receives a socket for engagement with a fastener. A follower is associated with the housi... | 05/30/2006 |
| 7036608 | Apparatus for producing self-exciting hammer action, and rotary power tool incorporating such apparatus An apparatus for providing percussion action in a rotary power tool having a rotary output shaft, the apparatus comprising at least one moveable mass adapted to have a component of movement parallel to the axis of the rotary output shaft to cause impacts to be appli... | 05/02/2006 |
| 7032687 | Percussion device Percussion device, includes a housing and two movable bodies, an impact body for an impact pin protruding from the housing, and a balancing body for counterbalancing impact motions of the impact body. The housing includes springs, which constantly strive to bring th... | 04/25/2006 |
| 7025151 | Device for limiting a torque to be transferred The invention relates to a device for limiting torque to be transferred, having first and second shafts having a longitudinal axis; at least first and second transfer elements arranged coaxial with the longitudinal axis of the first and second shafts, the first tran... | 04/11/2006 |
| 6971567 | Electronic control of a cordless fastening tool A fastening tool that drives a fastener into a work-piece. The tool includes a motor that is connected to a transmission. The transmission includes a flywheel. The tool also includes a driver mechanism that is adapted to drive the fastener into the work-piece. The f... | 12/06/2005 |
| 6902012 | Percussion electrical hand-held tool An electrical hand held tool for producing at least a percussion movement of a working tool includes an electrical drive, a first, oscillating subassembly including a percussion mechanism (2) and a rotor (5) of the electrical drive for transmitting tor... | 06/07/2005 |
| 6863134 | Rotary tool A rotary tool, such as an impact wrench, includes a housing having a forward end and supporting a motor. The motor has a motor shaft extending axially through the housing and defining an axis. The rotary tool further includes a frame coupled to the motor shaft and r... | 03/08/2005 |
| 6814159 | Impact tool driver An impact tool driver includes a hollow holding member having a surrounding wall defining a chamber. A solid and rigid shank of a handle is formed with a V-shaped cam hole, and extends into the chamber such that the V-shaped cam hole is registered with two diametric... | 11/09/2004 |
| 6769593 | Synchronous drive pin clutch This invention relates to the design of a pin clutch to allow for coupling of a rotational shaft to an output mechanism in a synchronous fashion. Specifically, this is related to impacting or operations requiring intermittent or semi-intermittent coupling of an inpu... | 08/03/2004 |
| 6766935 | Modified electrical motor driven nail gun A portable electric nailing gun operating from a power source. The motor accelerates a flywheel which at the appropriate energy state is coupled through a mechanism to an anvil acting directly on the nail. The motor accelerates a flywheel that is then clutched to th... | 07/27/2004 |
| 6733414 | Gear assembly for a power tool A gear assembly for a power tool. The gear assembly includes a gear assembly housing, a ring gear supported by the gear assembly housing, one of the gear assembly housing and the ring gear having an end defining a first bearing race, a planetary gear carrier member ... | 05/11/2004 |
| 6725945 | Impact tool with improved operability An impact driver (1) includes a main housing (2) encasing a motor (5); an internal gear case (8) which is secured by screws to the main housing (2) and is provided with an externally threaded portion (12); and a hammer case ... | 04/27/2004 |
| 6705503 | Electrical motor driven nail gun A portable electric nailing gun operating from a power supply. The motor accelerates a flywheel, which at the appropriate energy state is coupled through a mechanism to an anvil acting directly on the nail. The actuation is governed by a control circuit and initiate... | 03/16/2004 |
| 6684964 | Hammer drill A hammer drill with rolling contact at the contact surfaces for transmission of axial force between a drive shaft and hammer shaft. In the case of ball bearings, point contact is obtained. In the case of roller bearings, line contact is obtained. The area... | 02/03/2004 |
| 6669072 | Flywheel operated nailer Disclosed and taught is a novel drive mechanism for a cyclic operating tool employing an energized flywheel to provide the necessary energy to perform a working cycle. The drive mechanism disclosed is particularly useful in hand tool applications such as ... | 12/30/2003 |
| 6604666 | Portable electrical motor driven nail gun A portable electric nailing gun operating from a power supply. The motor accelerates a flywheel which at the appropriate energy state is coupled through a mechanism to an anvil acting directly on the nail. The actuation is governed by a control circuit an... | 08/12/2003 |
| 6550546 | Spindle lock and chipping mechanism for hammer drill A hammer drill has a motor which drives an axially displaceable intermediate gear mounted in an intermediate gear arrangement. An impact mechanism is formed by including interacting impact cams between either the intermediate gear and the housing, or the ... | 04/22/2003 |
| 6543663 | Automatic fastening scheduler An automatic fastening scheduler apparatus is described for scheduling the placement of fasteners such as nails, staples or screws for joining materials along a preselected path on the material. The apparatus spaces the fasteners by sequentially operating... | 04/08/2003 |
| 6484815 | Impact generator In a conventional impact generator, a grease receives centrifugal force by the rotation of a rotary member, thereby keeping away from surfaces of the rotary member and a weight. Consequently, insufficient lubrication is caused between the weight and a mem... | 11/26/2002 |
| 6481509 | Impact generator In a conventional impact generator, a great shock is generated when a weight collides with a rotary member, and a rotary shaft of the rotary member and a bearing supporting the rotary shaft receive the great shock. Therefore, it is necessary to employ a b... | 11/19/2002 |
| 6408951 | Automatic cable-cutting apparatus A cable-cutting apparatus includes a housing, a cutter rod with a fixed blade, an impact rod, a resilient unit for biasing the impact rod to press against the cutter rod, a rotating unit, and a driving unit. Normally, an engagement surface of the impact r... | 06/25/2002 |
| 6360828 | Retaining device for a power drill shaft A retaining device for a power drill has multiple brake shoes movably received in the housing, a cam securely engaged with the output shaft to selectively abut the brake shoes to move and engage with an inner periphery of a through hole and a driving disk... | 03/26/2002 |
| 6316890 | Hand controlled motor driven oscillating device A hand-controlled motor-driven oscillating device having an elongate casing, an electric motor having an output shaft, and an oscillating unit having an output shaft and being connected in drive terms to the output shaft of the electric motor. The electri... | 11/13/2001 |
| 6269888 | Reciprocating and rotary power tool An apparatus is provided that allows a working element to undergo either rotary or reciprocation motion in a transmission system that is very compact in terms of the amount of space it requires to convert the rotary output of the motor into either rotary ... | 08/07/2001 |
