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 |
| 7866068 | Snowblower drive assist systems and methods A snowblower can include a snowblower housing, an auger connected to the housing, at least one wheel attached to the housing, and a machine control component. The machine control component can be movable to selectively control the movement of the wheels relative to ... | 01/11/2011 |
| 7866067 | Heater box for snow blower A snow blower is provided that includes a muffler and a heater box that has a top wall. The heater box has a plurality of side walls that extend from the top wall. The top wall and side walls define an interior of the heater box. One of the side walls defines a muff... | 01/11/2011 |
| 7325755 | Rotary tool for spreading particulate materials and method of using the same The rotary tool for spreading particulate materials from a mound of the same. The tool has an elongated shaft with a rotatable body mounted proximate a first end thereof. The body has a peripheral edge with a plurality of flexible fingers radiating outwardly therefr... | 02/05/2008 |
| 7320192 | Motorized grain scoop An apparatus for moving particulate matter includes a body having a drive mechanism that operatively connects a motor to a shaft of a paddle assembly. A drive housing is disposed on the body and houses the drive mechanism. A cavity having a first side, a second side... | 01/22/2008 |
| 7159343 | Working machine A working machine has a transmission case having a transmission mechanism accommodated therein. The transmission mechanism has an input shaft having a first longitudinal axis and an output shaft having a second longitudinal axis extending in a direction generally pe... | 01/09/2007 |
| 7137214 | Snow removal machine with system for applying a surface treatment material A snow removal machine including a housing with a forward opening through which snow enters the snow removal machine. At least one rotatable member is positioned and rotatably secured within the housing for engaging and eliminating the snow from within said housing.... | 11/21/2006 |
| 7134208 | Ergonomic handle for vegetation trimmer A vegetation trimmer having a head, a handle and an intermediate portion interconnecting the head to the handle. The intermediate portion is configured to include a first portion, a second portion and a third portion that are each arranged about a respective axis. T... | 11/14/2006 |
| 7096608 | Overload prevention device for a snow removing machine An overload prevention device has a first rotational member for driving engagement with an input shaft of an auger transmission of a snow removing machine, a second rotational member engaging the first rotational member for rotation therewith over a predetermined to... | 08/29/2006 |
| 7059071 | Self-propelled walk-behind snowplow vehicle A self-propelled walk-behind snowplow vehicle has a vehicle body and a vertical engine mounted on an upper part of the vehicle body. The vertical engine has a crankshaft disposed generally vertical and a cylinder head disposed generally horizontal to a longitudinal ... | 06/13/2006 |
| 7032333 | Snowthrower chute and deflector control A single joystick type control handle controls the chute and deflector of a snowthrower. The control handle can be moved laterally from side to side and a second linkage including a gear connection laterally rotates the chute from side to side in the same direction,... | 04/25/2006 |
| 6948569 | Snow auger assembly A device for removing material from a surface includes a blade, an auger positioned in close proximity to a front side of the blade and operably mounted on an axle for rotary motion relative to the blade whereby material accumulating at the front side of the blade d... | 09/27/2005 |
| 6945333 | Convertible rear-tine tiller A rear-tine roto-tiller with a chassis having a forward end and a rearward end; a set of rotating tines at the rearward end; a set of ground-engaging wheels between the forward end and the tines; and a tine transmission mounted on a substantially vertical shaft at t... | 09/20/2005 |
| 6941739 | Quick attach mechanism for walk-behind mowers A quick attaching mechanism is provided for a walk-behind mower power unit. The walk-behind mower power unit deck has upper brackets attached to the front of the deck and lower holes drilled into the lower part of the vertical sides of the deck. The accessory unit d... | 09/13/2005 |
| 6740888 | Electron beam apparatus In order to ensure that an electromagnetic field lens is capable of high-resolution observation using a magnetic field lens without leakage of magnetic flux, there is provided a magnetic field superimposing-type lens 1 for focusing an electron beam onto a sam... | 05/25/2004 |
| 6643959 | Implement having engine and transaxle module An implement having an engine and a transaxle which may be rigidly and directly attached to one another in a vertically stacked orientation to form an engine and transaxle module. The implement also includes ground engaging wheels attached to the transaxl... | 11/11/2003 |
| 6502335 | Friction drive cable shifter A self-propelled power implement having a friction drive system to transmit rotation from the engine to the wheels. The friction drive system includes an output disc and a friction disc. The output disc rotates in response to rotation from the engine's ou... | 01/07/2003 |
| 6470602 | Snowthrower having impeller assist propulsion An improved single-stage snow thrower including a wheeled frame assembly for supporting the snow thrower upon a ground surface and a driven impeller capable of being placed in ground contact to forwardly propel the snow thrower across the ground surface. ... | 10/29/2002 |
| 6449800 | Blower apparatus with brush for scavenging surface A blower head, comprising a frame, a brush rotatably supported by the frame, a sweeper drive adapted for rotating said brush to sweep a surface, and a blower unit adapted for removing swept-up particles away from the surface. The frame includes a mouth po... | 09/17/2002 |
| 6260293 | Device for removing snow and other debris from ground surfaces A snow removal device that picks up snow from the ground and flicks the snow into impeller units that transport the snow into a discharge tube whence the snow is expelled from the system. The system primarily includes a pick-up assembly, an impeller assem... | 07/17/2001 |
| 6170179 | Battery powered electric snow thrower A snow thrower (10) includes a rotatable wheel (12) for collecting the snow and a chute (14) for throwing the snow away from the snow thrower (10). The snow thrower (10) includes a motor (22) and a battery (24) connected thereto for providing power to the... | 01/09/2001 |
| 6131316 | Snow thrower machine A snow thrower machine having an axle driving unit comprising a housing, consisting of a front housing and a rear housing and containing an axle. Disposed in the housing are a hydraulic pump, which receives power from an engine, a hydraulic motor, which i... | 10/17/2000 |
| 6035561 | Battery powered electric snow thrower A snow thrower (10) includes a rotatable wheel (12) for collecting the snow and a chute (14) for throwing the snow away from the snow thrower (10). The snow thrower (10) includes a motor (22) and a battery (24) connected thereto for providing power to the... | 03/14/2000 |
| 5966846 | Two-piece impeller An improved single stage snowthrower includes a housing with an open front portion, the housing including two side walls, a rear wall therebetween and a discharge chute. The rear wall includes deflecting ledges that angle upwardly toward the discharge chu... | 10/19/1999 |
| 5915835 | Snowblower with a side draft compensator assembly The snowblower of the present invention includes a housing and attached to the snowblower is an drive mechanism that actuates a snow gate for movement about a vertical axis, inwardly towards and outwardly away from the snowblower housing. This snow gate e... | 06/29/1999 |
| 5893224 | Cutting arrangement for a snow blower A snow blower is provided with cutting devices which are housed within, but project beyond, a housing provided for the blower's auger. As the cutting devices engage snow during the blower's advance, the cutting devices move in a direction which tends to u... | 04/13/1999 |
| 5603173 | Snow thrower A portable, hand-held snow thrower comprising a power unit and an attachment removably securable to the power unit. The attachment includes an impeller having a first pulley and a flexible drive shaft. A first end of the drive shaft is connected to the po... | 02/18/1997 |
| 5553406 | Small lightweight snow flinger A small lightweight snow flinger comprising a central post adapted to be held by a user. A motor is mounted on the upper end of the post. Motion imparting mechanisms extend from the motor to a lower end of the post. A box is secured with respect to the lo... | 09/10/1996 |
| 5540004 | Apparatus for removing scraping a ground surface An apparatus for removing ice and snow from a surface consisting of a support frame and a elongate member rotatably mounted on the support frame. The elongate member has a first end and a second end. A plurality of flexible arms extend from the elongate m... | 07/30/1996 |
| 5513453 | Reversing snow plow A combined snow plowing and snow throwing vehicle includes an elongate plow blade at its forward end. The plow blade can be shifted to direct snow to either of the right or the left and includes separate snow throwing fans mounted, respectively, at the ri... | 05/07/1996 |
| 5444927 | Motorized mechanism for adjusting snow blowing discharge chute An electrically powered snow blower discharge chute adjustment mechanism generally comprised of a meshingly engaging gearing arrangement wherein one of the gears is operably connected to a conventional electric motor (the drive gear), and the other gear i... | 08/29/1995 |
| 5203102 | Device on rotary snow plough A rotary snow plough includes a ploughing drum, a running gear and a motor drive. A holding-down member is connected to the running gear and is arranged in front of the ploughing drum. The holding-down member includes upwardly directed holding-back surfac... | 04/20/1993 |
| 5177888 | Discharge chute assembly for snowthrower A discharge chute assembly (30) includes a chute (32) and a pivotal deflector (34), the overlapping end portions of which define a partial spherical or ball joint (40) which maintains a tight seal against backflow and leakage over the entire range of rota... | 01/12/1993 |
| 5161318 | Power sweeping tool The present invention provides a hand held, readily portable power sweeping tool. The tool includes an elongate boom having a power generation means disposed at one end thereof and a power sweeping means disposed at the other end. Power transmission means... | 11/10/1992 |
| 5083387 | Removable snowthrower chute The invention is directed toward a removable chute assembly (33) for a snowthrower (10). Chute (33) is connected to housing (12) of snowthrower (10) by using a plurality of locking assemblies (52) and a detent assembly (50). Each locking assembly (52) inc... | 01/28/1992 |
| 5054217 | Hard insert for ice/snow clearing tool An ice and snow scraping insert includes a cylindrical or slightly conical rear surface portion, a blunt front surface portion, and a smoothly curved transition surface portion interconnecting the front and rear surface portions. The rear surface portion ... | 10/08/1991 |
| 5052135 | Convertible grass cutting and snow blowing machine having a cylindrical rotor A convertible grass cutting and snow blowing machine which is supported on wheels and displaced on a surface where grass is to be cut or snow removed by a user controlling the machine from a handlebar. An engine is connected to the rotor housing which ser... | 10/01/1991 |
| 5020250 | Powered snowplow A powered snowplow includes a snowplow body housing which houses at least a power source, a self-propelling mechanism supporting the snowplow body and drivable by the power source for propelling the snowplow, an auger mechanism mounted on a front portion ... | 06/04/1991 |
| 5018592 | Steering control for snowblowers The disclosure relates to the use of two clutches, one associated with each wheel of a two wheel snowblower, selectively operated by a pivoting control on the handle so as to allow for power steering of the snowblower.... | 05/28/1991 |
| 4989351 | Snowthrower platform A wheeled platform towable behind a snowthrower to apply a downward force on the traction wheels of the snowthrower. The person operating the snowthrower stands on the platform so that a portion of his/her weight is applied to a towbar that extends from t... | 02/05/1991 |
| 4986012 | Retractable drift cutter A motorized rotary blade snowblower is used for the removal of snow. This snowblower has a housing which covers the rotary blades and a drift cutting arm that is fastened to and extends p from the sides of the housing. The drift cutter is fastened to the ... | 01/22/1991 |