Celebrity Inventors
Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 7284939 | Fastener with tightening structure A tightening structure for locking, comprises a nut, a bolt, and a washer with a hole through which an axis of the bolt passes. To enable the structure to lock more firmly, a recessed part symmetrical with respect to an axis, and having a generally trapezoidal shape... | 10/23/2007 |
| 7246411 | Methods and systems for sliding windows and doors An adjustable mechanism for sliding panels, such as sliding windows and doors is disclosed. One embodiment comprises adjustable buttons that extend from a housing positioned in the sliding panel. The adjustable threaded buttons of the present invention provide a sur... | 07/24/2007 |
| 7246979 | Multi-pitch screw, multi-pitch nut, feed screw device using the screw and nut, and method of producing the nut A flat portion 12a and a slope portion 12b are provided on a thread 12 of a multi-pitch screw 10 alternately. The flat portion and the slope portion are provided on the thread of a multi-pitch nut which fastens with this. Co... | 07/24/2007 |
| 7163366 | Screw with two types of threads A screw includes a first thread on the shank and located close to the point of the shank, and a second thread which is connected to the first thread and extends toward the head of the screw. Each of the first and second threads includes an upper flank and a lower fl... | 01/16/2007 |
| 6974289 | Pressure flank screw and fastening system therewith A male threaded fastening member is provided with depressions in at least one or several helix wraps of the thread adjacent the head, the depressions extending inwardly from an edge of the thread at least part way toward a shank of the male fastening member. In a fa... | 12/13/2005 |
| 5131690 | Self-locking connector A self-locking connector comprising first and second tubular fittings, the first fitting having an annular ramp and a threaded end adjacent to the ramp, and the second fitting having an annular shoulder adjacent to one of its ends. A nut is rotatably moun... | 07/21/1992 |
| 4690600 | Threaded connection having multi-part threaded bolt The threaded connection is formed between a tapped component and an externally threaded two part bolt. The two bolt parts are each provided with an external thread of the same pitch and hand in order to be threaded simultaneously into the tapped component... | 09/01/1987 |
| 4588163 | Valve stem travel limiting apparatus A stem travel limiting apparatus provides a relatively tamper proof limit setting device for an adjustable valve stem. In a preferred embodiment, an internally threaded annular collar is positioned about an externally matingly threaded stem, the collar ha... | 05/13/1986 |
| 4470735 | Self-locking bolt A snap ring cooperating with a double acting cam provided by a land formed on the shank of the bolt serves to lock the bolt into place and requires a positive predetermined torque to retract the bolt.... | 09/11/1984 |
