Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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 |
| 7216873 | Drill chuck A drill chuck has a chuck body centered on and axis, and a tightening element surrounding the body and rotatable thereon about the axis. The tightening element has a front sleeve formed with jaw-holding guides and a rear sleeve releasably coupled with the front slee... | 05/15/2007 |
| 7014397 | Self-aligning handheld tapping tool A self-aligning tapping tool comprises an elongate handle having a longitudinal counterbore through a first end. A tap is received in the counterbore. A collar is operatively secured to the tap. The collar is slightly smaller than the counterbore to enable slidable ... | 03/21/2006 |
| 6997654 | Tapping tool for use with drill press A tapping device is configured to be used within a drill press or lathe or other device capable of holding a cylindrical object. The tapping device has an upper projection for being axially fixed in, for example, a drill press. The remainder of the body of the tappi... | 02/14/2006 |
| 6945145 | Quick action tap wrench A quick action, cam operated hand tool holder, such as a tap wrench. The cam is moveable between at least one released and one locked positions, preferably by a conventional T-handle. A third position may also be provided which may be either a second locked or a sec... | 09/20/2005 |
| 5573357 | Portable, handheld, power tool A portable, handheld, power tool is operable to rotate a tap in an opening in a workpiece to form an internal thread convolution in the opening. The power tool includes a chuck which holds the tap. Left and right handles extend in opposite directions from... | 11/12/1996 |
| 5490746 | Cylindrical thread cutting aid The disclosure is directed to a pipe cylindrical thread cutting aid that has an inner cylindrical wall, which extends throughout its length; a pair of outer cylindrical walls between which lies a shoulder which is substantially perpendicular to these oute... | 02/13/1996 |
| 5299895 | Ratcheting threading tool A tool member includes a ratchet head having a central polygonal aperture arranged to selectively receive a die holder member or alternatively, a collet assembly for mounting a threading tap. A second handle member is arranged for selective securement to ... | 04/05/1994 |
| 4856946 | Threading assembly A threading assembly including biasing means for biasing a threading tap or die in a selected direction and a reversible ratchet assembly for applying a torque about an axis coinciding with the axis of the tap or die. An alignment guide concentrically ali... | 08/15/1989 |
| 4799832 | Ratchet tap wrench A compact tap wrench includes a ring-base, a pair of diametrically opposed handles, and a chuck mechanism friction-fit into the ring-base. A ratchet mechanism is built into one of the handles. The chuck mechanism includes interchangeable jaws for accommod... | 01/24/1989 |
| 4780031 | Ratchet die stock A ratchet die stock comprised of a main body from which there protrude two parallel portions each possessing a hollow, and where such hollows accommodate a ratchet and pawl to provide unidirectional travel of the dies which are assembled in the head of th... | 10/25/1988 |
| 4752163 | Thread cutting diestock assembly A thread cutting diestock assembly is disclosed comprising a ratchet housing having a bore adapted to selectively and detachably receive a large thread cutting die head or an adaptor ring, each of which is provided with ratchet teeth engaged by a pawl on ... | 06/21/1988 |
| 4355931 | Tapping drill The tapping drill having a drive shaft driven with an alternating rotational movement, comprises, disposed between this drive shaft and the tool carrier, a ratchet mechanism capable, at will, of transforming the alternating rotational motion into a rotati... | 10/26/1982 |
| 4291727 | Pipeline flow restrictor and process An apparatus and process for restricting fluid flow in a pipeline by inflation of an expandable flexible sleeve which is attached to a plug having a through hole for the inflation fluid. Several embodiments of flow restrictor cartridges are disclosed incl... | 09/29/1981 |
| 4213723 | Thread cutting die stock A thread cutting die stock with a die stock head structure which has a first inner guiding surface for detachably receiving the shank of a first cutting head while radially inwardly of the aforementioned first guiding surface there is detachably arranged ... | 07/22/1980 |
| 4149820 | Pipe tapping ratchet assembly A pipe tapping ratchet assembly is disclosed herein which comprises a ratchet handle and a socket attachment received thereon. The socket attachment defines an aperture within which an adapter is received, the aperture and the adapter being configured to ... | 04/17/1979 |
