Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 7017919 | Chuck A chuck includes a holder body, a clamp sleeve, and a large number of needle rollers. The holder body has a shank portion, a flange, and a chuck sleeve. The clamp sleeve is fitted onto the outer circumference of the chuck sleeve such that the clamp sleeve is rotatab... | 03/28/2006 |
| 6131916 | Chuck A chuck comprises a mounting base 11, and a protruding shaft 12 protruding from a center of a front surface of the base and having a tapered surface 13 on the outer peripheral surface thereof. A hole 16 is formed in the protruding shaft and has an opened ... | 10/17/2000 |
| 6105974 | Chuck A chuck includes a holder body, a clamp sleeve, and a large number of needle rollers. The holder body has a shank portion, a flange formed at one end of the shank portion, and a chuck sleeve that extends from the flange in the direction away from the shan... | 08/22/2000 |
| 5335922 | Chuck A chuck for fixing a rotary tool such a drill and an end mill to a machine tool is disclosed. This chuck comprises a main body comprising a taper shank for fixing the chuck to the machine tool and a tool support for clamping the rotary tool, a fastening r... | 08/09/1994 |
| 5158408 | Chuck device In a support device to hold a tool or a workpiece, a tightening cylinder is provided at inside with an insertion hole for a substance to be held and on an outer circumference with a taper surface, a rotary cylinder is rotatably and externally fitted to ou... | 10/27/1992 |
| 4865336 | Apparatus for securing a cutting tool in a tool holder and machine tools employing the same An apparatus and tool assembly containing the same which includes a rotatable ring and a series of bearings in contact with the inner surface of the rotatable ring wherein the bearings are angled with respect to the longitudinal axis of the cutting tool a... | 09/12/1989 |
| 4799838 | Milling cutter A milling cutter having an internal thread in the end face of a shank thereof for preventing accidental detachment, wherein a small-diameter thread part provided in one end of an adapter is screwed in to the internal thread set forth above while a large-d... | 01/24/1989 |
| 4721423 | Chuck A chuck allowing to mount a cutting tool on the spindle of a machine tool. The chuck includes an ahead projecting chuck cylinder provided on the one side of a chuck body in a mated fashion to each other, and a tightening rotary sleeve mounted through need... | 01/26/1988 |
| 4660840 | Needle-roller type chuck An improved needle-roller type chuck having a cylindrical portion extending forwardly from a chuck main body which is constituted by an inner cylinder integrally formed with a chuck main body and an outer cylinder fixed as one unit, onto the outer periphe... | 04/28/1987 |
| 4657454 | Chuck for holding rotary cutting tool In a chuck comprising a holding cylinder having a tapered outer circumferential surface and an objective tool or an adapter for holding such a tool inserted therein, and a clamping cylinder rotatably mounted at a predetermined distance from the outer circ... | 04/14/1987 |
| 4630980 | Chuck assembly for a machine tool A chuck assembly for use in a machine tool for holding a tool element comprises a chuck body having a sleeve integrally formed therewith so as to extend in the direction, which sleeve has a support bore defined therein for the receipt and support of the t... | 12/23/1986 |
| 4379667 | Chuck for machine tools A needle-roller type chuck for machine tools which includes a chuck body having a chuck barrel integral with the leading end portion of the chuck body. The chuck barrel has a leading end portion and an outer peripheral surface tapered to form a conical su... | 04/12/1983 |
| 4252333 | Keyless chuck A keyless chuck adapted to grip an object, such as a drill bit, is disclosed. The keyless chuck includes a cylindrical body provided with an axially extending tapered bore. The surface of the tapered bore includes first and second cam surfaces. A control ... | 02/24/1981 |
| 4129945 | Clamping device for dental handpiece A clamping device for a dental handpiece to clamp a tooth treatment tool and provide for rapid connection with and disengagement from the dental handpiece. The clamping device includes a pre-clamping element provided with flexible tongues to clamp the sha... | 12/19/1978 |
| 4021051 | Chuck for machine tools There is disclosed a chuck adapted to be attached to the spindle of a machine tool, for gripping an intended tool, comprising a chuck barrel adapted to grip an intended tool and having a conical outer peripheral surface and not having slots extending alon... | 05/03/1977 |
