In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
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 |
| 8161655 | Motor-driven reciprocating saw, in particular a jigsaw A motor-driven, hand-guided reciprocating saw or jigsaw includes a saw blade which performs a working motion and a base plate which is connected to a housing of the reciprocating saw, where an underside of the base plate is used as a bearing surface which faces a wo... | 04/24/2012 |
| 8156656 | Hedgetrimmer with rotatable rear handle A hedgetrimmer having a housing, a motor located within the housing for driving a reciprocating blade for cutting vegetation. A front handle located at a front end of the housing and a rear handle located at a rear end of the housing. The rear handle having a trigge... | 04/17/2012 |
| 8156655 | Pneumatically powered pole saw A pneumatically powered pole saw, comprising: an extendable pole; a head member secured to the extendable pole; a cutting blade movably mounted to the head member; a piston linked to the cutting blade; a reciprocating valve disposed in the head member configured to ... | 04/17/2012 |
| 8141257 | Hand-held reciprocating power saw A hand-held reciprocating power saw (10) includes a reciprocation member (21) for reciprocatingly moving a working tool, a compensation mass (22), a motor-driven eccentric wheel (23) having a first eccentric (24) for reciprocatingl... | 03/27/2012 |
| 8136257 | Hand-held power tool A cutting tool includes a working member power coupled to a power drive arrangement held by a housing. The housing includes a front housing portion from which the working member protrudes and a rear housing portion. A first handle includes a first hand-grip portion ... | 03/20/2012 |
| 8117757 | Cutter adapter for cutting machine A cutter adapter includes a holder having a receiving portion for inserting a cutter therein; a sleeve sleeved onto the holder and having an annular bevel; a lock pin inserted into the holder and having an active end and a passive end, the passive end being squeezed... | 02/21/2012 |
| 8112895 | Power hacksaw with a fastening device for a saw blade A reciprocating saw has a locking element (9) for axially fixing the saw blade (5) in a fastening device, wherein a release device (10) is provided, with which the locking element can be displaced into its release position against the spring for... | 02/14/2012 |
| 8099872 | Guide device for a saw blade that executes lifting motions The invention relates to a guide device (1) for a saw blade (2), in particular for an electric tool, which is operated in reciprocating motion (H) and which comprises a clamping device (4) engaging in the clamping end (3) of the saw blade... | 01/24/2012 |
| 8096055 | Pendulum guide device for a jigsaw blade that executes reciprocating motions A pendulum guide device for a power jigsaw saw blade that executes reciprocating motions includes guide elements that engage a saw blade spine of the saw blade and are associated with a support frame. A first two guide elements is fixed in place on the support frame... | 01/17/2012 |
| 8082671 | Hand-held jigsaw with clamping device for reciprocating tool, in particular a jigsaw blade A hand-held power jigsaw includes a clamping device which has an insertion slot (26) for a shaft (153) of the tool and has a transverse aperture (27) extending transversely to the insertion slot (26) and opening out into it. A clamping el... | 12/27/2011 |
| 8046926 | Clamping arrangement for receiving a saw blade in multiple orientations A saw blade clamping arrangement for a power tool including a housing, a drive shaft mounted for reciprocating motion relative to the housing and having a longitudinal drive axis, and a saw blade releasably interconnected with the drive shaft. The saw blade clamping... | 11/01/2011 |
| 8024865 | Clamping device for a jigsaw The invention relates to a clamping device (8) for connecting a saw blade (12) to a reciprocating rod (6) of a jig saw, in particular a hand-operated compass saw (2), comprising a mounting (20), which is connected to the reciprocat... | 09/27/2011 |
| 7996996 | Reciprocating power tool The present invention provides a technique for achieving weight reduction of the counter weight while reducing vibration in a reciprocating power tool. A tool bit performs a predetermined operation by reciprocating. A slider reciprocates to drive the tool bit. A mot... | 08/16/2011 |
| 7958642 | Hedge trimmer A hedge trimmer has a housing. A blade bar projects forwards from the housing along a longitudinal axis. An electric drive motor drives the blade bar. At least one battery supplies the drive motor with electrical energy. The blade bar, the drive motor and the batter... | 06/14/2011 |
| 7937841 | Electric jigsaw An electric saw (2) includes a stroke arrangement (4) driven in a reciprocating manner and having a tool receptacle (8) for a saw blade (10), a housing (14) which extends along a stroke axis (A) of the stroke arrangement (4)... | 05/10/2011 |
| 7913403 | Reciprocating pruning saw An apparatus for the cutting of tree limbs includes an extensible drive shaft that is detachably-attachable at one end to a portable electric drill and is secured to a housing at an opposite end thereof. The housing converts the rotary motion that is supplied by the... | 03/29/2011 |
| 7861418 | Reciprocatory saw A reciprocatory saw, in particular, a jigsaw, is made up of a pitman with a chuck arranged for the releasable clamping of a saw blade. The chuck contains a movably mounted chuck jaw arrangement able to be clamped laterally against the saw blade shank, a wedge elemen... | 01/04/2011 |
| 7818887 | Handheld power tool, in particular handheld power saw The invention relates to a handheld tool, in particular a handheld saw, with an electric drive motor (12), a serially switched gearbox (13), and a movement converter (14) that converts the driven movement of the gearbox (13) into an axial... | 10/26/2010 |
| 7797841 | Drive mechanism for a reciprocating saw Embodiments of a reciprocating drive apparatus are disclosed which comprise a housing, a drive shaft rotatably mounted in the housing, an elongated plunger mounted in the housing for reciprocating motion; the plunger having a rear end portion configured to engage a ... | 09/21/2010 |
| 7793419 | Cutting and forming tool assembly A cutting and forming tool assembly is disclosed that cuts and forms many types of material while remaining easy to use. The tool assembly may include a cutting or forming and an underlying board. The cutting and forming tool has a drive assembly and a shaft assembl... | 09/14/2010 |
| 7774944 | Saw blade adaptor and holder An adaptor for attaching new, worn or broken blades to reciprocating saws. The adaptor has a slot wide enough to accommodate the working portion of the blade and includes a clamping member to clamp the blade in the slot. Since the blades are slightly flexible, the s... | 08/17/2010 |
| 7748125 | Reciprocating saw with fastening device for a saw blade A reciprocating saw has a saw blade, a fastening device provided for the saw blade and holding the saw blade in a non-rotating fashion, a reciprocating lifting rod having a free end supporting the fastening device, a locking element provided for axially fixing the s... | 07/06/2010 |
| 7743514 | Reciprocating power tool It is an object of the invention to provide a useful technique for reducing vibration of a handgrip and improving the cutting efficiency while achieving weight reduction of a reciprocating power tool. According to the invention, a representative reciprocating power ... | 06/29/2010 |
| 7721450 | Blade clamp for reciprocating saw The present invention provides a blade clamp for an electrically powered reciprocating saw. The clamp is arranged to eliminate, or at least reduce, misalignment of a blade during use with the cut direction and the longitudinal axis of a jigsaw. Thus, so-called “cr... | 05/25/2010 |
| 7665216 | Saw blade clamping assembly for reciprocating saw The present invention generally provides a saw blade clamping assembly. The assembly has a main body, a clamping device, a rotating sleeve and a biasing device. The main body has a receiving slot for receiving a fixing end of a saw blade and an oblique and elongate ... | 02/23/2010 |
| 7661195 | Tool coupling and dust collection system A tool coupling and dust collection system for collecting dust and debris generated by the use of a reciprocal saw being releasably attached to the reciprocal saw. A planar foot is attached to and extends downwardly the plate. Each of a plurality of attachments is r... | 02/16/2010 |
| 7658012 | Drive mechanism and power tool A reciprocating saw generally includes a housing and a motor supported by the housing. A spindle is mounted for reciprocation relative to the housing, the spindle having a front end for supporting a saw blade and being movable through a cutting stroke and a return s... | 02/09/2010 |
| 7637018 | Power tool A power tool includes a housing, a rotary motor disposed in the housing, a jack shaft coupled to the motor and a spindle mounted in the housing for carrying a tool. A first wobble plate assembly is coupled to the jack shaft for driving the spindle to reciprocate at ... | 12/29/2009 |
| 7562457 | Foam cutter blade attachment device An improvement for a reciprocal saw is disclosed, the saw being of the type having an oscillating drive shaft and a counter weight that oscillates in opposing phase to the drive shaft for the purpose of reducing vibration. The improvement comprises a lateral extensi... | 07/21/2009 |
| 7533470 | Electric knife adapted for safely carving pumpkins and other fruits and vegetables According to one embodiment of the present invention, an electric knife is provided that includes a blade that is adapted to cut the pulp and shell of pumpkins and other fruits and vegetables but not readily cut the skin and flesh of humans. According to a preferred... | 05/19/2009 |
| 7526868 | Power tool with vibration reduction It is an object of the invention to provide a useful technique for reducing vibration of a handgrip and improving the cutting efficiency while achieving weight reduction of a reciprocating power tool. According to the invention, a representative reciprocating power ... | 05/05/2009 |
| 7526867 | Tool with clamping apparatus and an improved scrolling mechanism Cutting apparatus is provided which includes clamping apparatus with two clamping members movable between a clamped position, wherein a portion of the saw blade is secured in position in use, and an unclamped position, wherein the saw blade is movable with respect t... | 05/05/2009 |
| 7513047 | Handheld power tool with a detachable handle A jigsaw with the functions of blade scrolling and blade pendulum movement comprises a housing, a motor, a reciprocating rod and a motor transmission system. The motor transmission system transfers the rotation of the motor to an up-and-down movement of the reciproc... | 04/07/2009 |
| 7506447 | Reciprocating saw A reciprocating saw includes a carrier operable to cooperate with a motor to translate rotational movement of the motor into reciprocal linear actuation of a saw blade. A carrier is slidably disposed within the housing and includes a first portion adapted to receive... | 03/24/2009 |
| 7497017 | Debris removal apparatus for a jigsaw A jigsaw comprising a debris or dust collection system is described. A shroud is arranged to encapsulate a portion of a saw blade such that debris from the blade ejected during cutting of a work-piece is captured in the shroud and entrained in an airflow provided by... | 03/03/2009 |
| 7493698 | Keyless clamp device for reciprocating saw A clamp device for a reciprocating saw is disclosed herein, which does not require the use of a tool for saw blade replacement. The main feature of the device is that two clamping blocks are pivotally mounted on a bracket and each of the clamping blocks has a tooth ... | 02/24/2009 |
| 7451546 | Jigsaw machine A hand-held jigsaw machine includes a machine housing (11), a saw blade (13) that is drivable in a reciprocating manner by a motor, a support device (20) with a support roller (23) that supports the saw blade on its back (132), and... | 11/18/2008 |
| 7448137 | Reciprocating saw A reciprocating saw, including a housing, a spindle mounted for reciprocation relative to the housing, the spindle having an end adapted to receive a saw blade, the saw blade having a first orientation relative to the spindle to have a first cutting direction and a ... | 11/11/2008 |
| 7441338 | Clamping device for toolless clamping of a saw blade A clamping device for toolless clamping of saw blades equipped with the clamping shank for a hand machine tool has two clamping parts that are pressable against each other. Each of the clamping parts is provided with a support surface for the clamping shank of a saw... | 10/28/2008 |
| 7437824 | Adjustable shoe assembly for a reciprocating saw A reciprocating saw includes a locking mechanism for a shoe of the reciprocating saw. The mechanism includes a lever mounted on the saw body movable to a first position where the saw blade is clamped in place. It also includes a lock pin with a body, a reduced circu... | 10/21/2008 |