Famous Patents
William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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 |
| 7172380 | Wheel nut assembly A wheel nut assembly includes a stud (1), a main wheel nut (4) mountable on threads (3) provided on the stud, and a retaining nut (6) engageable with threads (5) provided on the stud to prevent accidental loosening of the wheel nut... | 02/06/2007 |
| 7014404 | Nut member with tightness-indicating protrusions and loosening-preventing recesses A nut member has first and second end faces and corners, and is formed with a plurality of protrusions, each of which is disposed at a respective corner and each of which has a lateral inner face that extends from the second end face, and a plurality of recesses, ea... | 03/21/2006 |
| 6810571 | Method of tightening and loosening an object A method of tightening and loosening an object to a rotary base torsion-free includes providing a single power tool having a tool housing portion and a driving portion which are coaxial with one another and provide equal but opposite forces, connecting a bolt with t... | 11/02/2004 |
| 6257815 | Lock structure using nut A lock structure, in which a nut member is screwed on a threaded portion formed in a shaft member in the axial direction and in which a fixed member fitted on the shaft member is thrust in the axial direction and fixed by the nut member. The lock structur... | 07/10/2001 |
| 6113329 | Lock nut This invention relates to a lock nut in which, when a double nut is fastened against a bolt, projections at the lock nut are deformed and crushed to be applied around the threaded part of the bolt and a frictional force is increased to improve an effect o... | 09/05/2000 |
| 5954467 | Method and apparatus for anchor bolt reinforcement An apparatus for attaching an item to a floor comprising an anchor bolt, an anchor nut, and an annular collar comprising an upper annular outer ring, a lower annular ring, and an annular side wall connecting the rings, the annular collar held in place ove... | 09/21/1999 |
| 5888041 | Lock nut A lock nut for connecting a joint having a threaded connector has a first nut member which is engageable with a threaded connector and is axially displaceable, a second nut member which is engageable with the first nut member and is rotatable about an axi... | 03/30/1999 |
| 5640749 | Method of and device for elongating and relaxing a stud In order to elongate and relax a stud, a first part which is movable only in an axial direction engages the stud, a second part is connected with the first part, a friction element is connected with at least one of the parts radially inside the one part s... | 06/24/1997 |
| 5622465 | Lock nut A lock nut to connect a joint having a threaded connector has a first nut member engagable with the threaded connector and axially displaceable, a second nut member engagable with the first nut member and turnable about an axis, a third nut member which i... | 04/22/1997 |
| 5539970 | Method of and device for elongating and relaxing a stud In order to elongate and relax a stud, a first part which is movable only in an axial direction engages the stud, a second part is connected with the first part, a friction element is connected with at least one of the parts so that the first part has mor... | 07/30/1996 |
| 5388866 | High pressure coupling with provision for preventing separation of parts and with anti-galling provision A high pressure fitting is provided .which comprises an adjustment nut with nipples extending therefrom in axial extension of one another. The nipples are provided with exterior threads and with conically shaped ends which are respectively engaged by ferr... | 02/14/1995 |
| 5318397 | Mechanical tensioner A mechanical tensioner for elongating and relaxing a stud having an axis and arranged in an object, comprises at least two parts including a first part connectable with the stud and a second part connected with the first part, and a friction element which... | 06/07/1994 |
| 5248232 | Fixing means The nut includes a first half having a short shank with an internal screw thread therethrough and an external screw thread on the short shank and a second half with a threaded bore. The internal thread has a first pitch and the external thread has a secon... | 09/28/1993 |
| 4423992 | Self-retaining locking assembly for threaded couplings A self-retaining locking assembly for threaded couplings. An externally threaded bolt rod end bearing is threadedly secured to a nut or internally threaded piston rod. The bearing includes an axially extending keyway along the threads, and the piston rod ... | 01/03/1984 |
| 4369011 | Preloaded ball screw assembly Ball nuts are preloaded onto a ball screw by rotating the nuts relative to one another to jam adjacent end faces of the nuts together. Thereafter, the nuts are held against relative rotation by tightening a clamping ring secured to one of the nuts and ada... | 01/18/1983 |
| 4364136 | Formation of threaded elements having a self-locking action A fatigue resistant self-locking fastener is formed by screwing two threaded elements into engagement with a part having a thread which is slightly off-size with respect to the threads of those elements, locating the two elements just in contact with one ... | 12/21/1982 |
