Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 7134210 | Systems and methods for dimensionally inspecting threaded fasteners Systems and methods for obtaining dimensions for threaded fasteners are disclosed. In one embodiment, a system includes an apparatus that determines a dimension of a fastener using a probe that senses a linear displacement of the fastener. A probe tip is rotatably d... | 11/14/2006 |
| 5383286 | Hand held device for measuring screw threads by the three-wire method A device for holding wires for measuring screw threads by the three wire method with a micrometer includes a body portion and a plurality of wire holder ears in a vertical position, the wire holding ears being responsive to rotational movement and the wir... | 01/24/1995 |
| 5377417 | Thread pitch cylinder gage A thread pitch cylinder gage for an internally threaded bore in a workpiece, according to one embodiment, includes a gage post having a bearing surface extending through an externally threaded sleeve. The sleeve is trapped on the bearing surface by a reta... | 01/03/1995 |
| 5317809 | Apparatus for measuring screw threads by 3-wire method An apparatus for holding wires for measuring screw threads by the three wire method includes a body portion and a plurality of wire holder ears in a vertical position, the wire holding ears being responsive to rotational movement and the wire holder ears ... | 06/07/1994 |
| 5276971 | Thread gauge for tapered threads The thread gauge permits the user to determine the pitch diameter of tapered threads at the intersection of the pitch cone and the end face of the object being measured. A pair of opposed anvils having lines of threads which match the configuration and ta... | 01/11/1994 |
| 5182862 | Indicating thread gage An improved indicating thread gage for gaging the functional fit and individual thread parameters of threaded products, especially taper threaded products. Thread form elements engage the threaded product and are capable of longitudinally traversing the t... | 02/02/1993 |
| 5175935 | Screw-thread gauge-wire holder I have invented a new and novel "holder" to hold individual threadwire gauges used to measure the thread pitch of screws and bolts. The holder takes full advantage of the properties of new materials used in the holder, including magnets, rubber and synthe... | 01/05/1993 |
| 5048197 | Apparatus and method for measuring pitch diameter An apparatus and method empolying a notched precision caliper in conjunction with a transfer tool such as a conventional dial gauge caliper having ball-point type contact surfaces to provide a direct quantitative indication of a threaded member's pitch di... | 09/17/1991 |
| 4989331 | Gage A gage including two relatively movable structures which carry two gaging elements for contacting a screw thread or other work surface at different locations and which control an indicator producing a display representing a measurement of the thread or ot... | 02/05/1991 |
| 4965937 | Tool joint gauge A gauge to evaluate the flatness, planar disposition, and location of the sealing surface of a rotary shouldered threaded connection, the gauge being adjustable and convertible to gauge either pin or box ends of different size connections, with multiple c... | 10/30/1990 |
| 4965936 | Thread pitch cylinder gage A thread pitch cylinder gage for an internally threaded bore in a workpiece, according to one embodiment, includes a gage post having a bearing surface extending through an externally threaded sleeve. The sleeve is trapped on the bearing surface by a reta... | 10/30/1990 |
| 4955140 | Device for measuring thread minor diameter A device is shown for measuring the minor diameter of a screw thread. The device includes a frame and an adjustable indicator blade which moves in a vertical plane for engaging a thread root of a screw arranged on the frame transverse to the adjustable bl... | 09/11/1990 |
| 4947555 | Hand held pitch diameter gauge A pitch diameter gauge is disclosed which includes a gauge body and a first arm attached to the body and extending perpendicular outward therefrom. A second arm is attached to the body and extends perpendicular outward therefrom along the same side as the... | 08/14/1990 |
| 4547970 | Thread anvils for inside micrometer A thread gauge which attaches to an inside micrometer to measure the thread pitch diameter of internally threaded parts. A pair of anvils have external threads which match in pitch with the threads of the part. Each anvil has a bore which receives a ball ... | 10/22/1985 |
