Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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 |
| 7824079 | Light tower diffuser The invention provides a diffuser for a portable light tower that has an envelope of fire resistant material designed to diffuse light situated on a frame forming a generally spherical structure that can be opened and closed by use of a pulley and cable system. ... | 11/02/2010 |
| D602961 | Ride-on power trowel | 10/27/2009 |
| 7044682 | Mechanical pitch control A concrete finishing machine having a rotatable trowel blade assembly and a mechanism for controllably adjusting the pitch of the trowel blades relative to a wet concrete surface on which the blades rest. The machine's engine's drive shaft rotation itself is utilize... | 05/16/2006 |
| 7039986 | Vibration isolation machine handle Disclosed is a vibration dampening handle for power tools. It includes a branch handle attached to a main handle, but at least one resilient connection. The upper connection is through a resilient connection, and the lower connection is typically a solid connection.... | 05/09/2006 |
| 6637974 | Roller wall guard for floor finishing machines A roller wall guard system for use on a surface-finishing machine having a circular guard ring of a given circumference made up of a pair of wall guards. Each wall guard has an arc shaped arm having a first end attached to a roller and extending along a l... | 10/28/2003 |
| 6592290 | Power trowel gearbox A gearbox for a self-propelled power trowel for finishing a concrete surface having a rigid frame adapted to be disposed over a concrete surface, an engine assembly, at least one rotor assembly. The gearbox uses an input shaft having a first bevel gear, a... | 07/15/2003 |
| 6578924 | All wheel drive power buggy A motorized dump-type vehicle is provided having a chassis frame, an engine mounted on said frame, a dump container pivotally mounted on the front of said frame and a hydraulic system enabling said container to be raised and lowered by a hydraulic cylinde... | 06/17/2003 |
| 6536845 | All wheel drive power buggy A motorized dump-type vehicle is provided having a chassis frame, an engine mounted on said frame, a dump container pivotally mounted on the front of said frame and a hydraulic system enabling said container to be raised and lowered by a hydraulic cylinde... | 03/25/2003 |
| 6484711 | Automatic depth of cut control for concrete saw An automatic depth of cut control for use with concrete saws. The control allows an operator to set a maximum depth of cut for which the concrete saw can be used at. Further, the control allows the user to move the concrete saw from one location to anothe... | 11/26/2002 |
| 6443718 | Shuttle valve for concrete pump A shuttle valve for use in a pumping apparatus for pumping concrete or the like. The valve uses belleville springs to hold a wear ring against the concrete hopper, thereby creating a seal.... | 09/03/2002 |
