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"Flight by machines heavier than air is unpractical and insignificant, if not utterly impossible."
Simon Newcomb, astronomer ; Said in 1902, less than two years before the first flight at Kitty Hawk
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| Number | Title | Issue Date |
| 7669511 | Shaving product A razor head has blade members with straight front cuffing edges which are mutually parallel and lie in a cutting plane. Imaginary median surfaces of the blade members are continuously curved from the cutting plane, from the cutting edges toward the rear edges. The ... | 03/02/2010 |
| 6979153 | Deep-grooving insert having stepped cutting edge A deep-grooving chip-forming cutting insert includes a rear mounting portion, a front cutting portion, and a pair of side walls, each side wall extending along the front and rear portions. The front cutting portion includes a front end surface, a top surface, and a ... | 12/27/2005 |
| 6484613 | Electromagnetic bounce back braking for punch press and punch press process A method of punching a via or through hole in a polymer-metal laminate workpiece in a punch press. The punch press has a punch tool, a driver coil for driving the punch tool through the polymer-metal laminate workpiece, and a stopper for stopping the punc... | 11/26/2002 |
| 6253652 | Slitter blade locking device In a web slitter of the type used for cutting continuous webs of material, such as paper, a top slitter assembly features a hub cylinder attached to its frame. The hub cylinder supports a freely rotating hub to which the top blade of the web slitter is mo... | 07/03/2001 |
| 5974927 | Circular saw cutting machine A circular saw having a cutting position for cutting a workpiece at a predetermined location thereof, a gripper for gripping a workpiece at a predetermined location on the workpiece, a drive having a plurality of gears including final and penultimate stag... | 11/02/1999 |
| 5605087 | Tape cutting apparatus A tape cutting apparatus which provides for cutting a multi-layered tape through only one layer of the tape. The apparatus includes a cutting device with a cutting blade wherein the cutting device is actuated by a drive mechanism and the position of the c... | 02/25/1997 |
| 5361663 | Chain cutter A chain merchandising apparatus includes a frame, a cabinet secured to the frame, and a chain support mounted to the frame and located within the cabinet for supporting a plurality of chain containers. A chain cutter is moveably fixed to the apparatus so ... | 11/08/1994 |
| 5024130 | Flyknife cutter for extruded materials Apparatus (10) for repeatedly severing rubber and plastic material (T) at selected locations along a length thereof including a frame (15), an arbor (41) mounted on the frame carrying a knife blade (50) for rotation in a circular path, a guide for support... | 06/18/1991 |
| 4994979 | System for preventing the collision of two cutting tools A system for preventing the collision of two cutting tools in a computer-controlled cutting unit in which the two cutting tools may at times be moved toward each other. This system determines the actual position of each cutting tool during the cutting pro... | 02/19/1991 |
| 4574669 | Automatic punch A power sheet punching apparatus is provided in which a reversing drive operates initially to drive punches through a stack of sheets and thereafter to reverse direction of the drive to withdraw the punches from the sheets. Should the drive be insufficien... | 03/11/1986 |
| 4466318 | Drive system for a cutting station in a platen press A drive system for the cutting station in a platen press has four toggle joints supporting the platen and each having a cam follower for moving the toggle joint by an associated rotating cam. The four toggle joints are disposed in pairs perpendicularly to... | 08/21/1984 |
| 4362076 | Electrostatic copying apparatus A cutting apparatus for an electrostatic copying machine includes a fixed blade having a straight cutting edge, a rotary shaft mounted for rotation on the frame of the machine, and a rotary fixed to an carried by the rotary shaft, the rotary blade having ... | 12/07/1982 |
| 4344551 | Transportable apparatus for cutting and dispensing roll material An apparatus for transporting, cutting and dispensing heavy web sheet material such as cardboard, plastic film and the like, while in roll form. The apparatus includes a manually wheelable frame that can be selectively raised and lowered by a retractable ... | 08/17/1982 |
| 4319504 | Damping device for abruptly occurring forces in a shear or shear press machine Apparatus is provided for damping a billet shears assembly and includes a damping cylinder and piston mounted to the stationary portion of the assembly opposite the moving shear blade. The damping piston defines a control cylinder and the base of the damp... | 03/16/1982 |
| 4000673 | Punching machine A machine for punching a series of aligned holes in suitable stock, e.g., for forming binding holes in a stack of sheet material such as paper. The machine is electrically operated and generally includes a pressure bar which is guidingly constrained for m... | 01/04/1977 |
