In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
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| Number | Title | Issue Date |
| 7416393 | Apparatus and method for joining a rotor blade to a rotor mount of a gas turbine rotor A gas turbine rotor and a method for manufacturing a gas turbine rotor having integral blading, is disclosed. A rotor blade has a blade pan and a blade footing connected to the blade pan. The blade footing is designed with a V-shaped cross section in at least some p... | 08/26/2008 |
| 7316057 | Method of manufacturing a rotating apparatus disk A method (20) of fabricating a large component such as a gas turbine or compressor disk (32) from segregation-prone materials such as Alloy 706 or Alloy 718 when the size of the ingot required is larger than the size that can be predictably formed with... | 01/08/2008 |
| 7096561 | Separator plate for wet-type multiplate clutch and wet-type multiplate clutch provided with such separator plates A separator plate useful in a wet-type multiplate clutch is provided on a friction surface thereof with elongated asperities extending with regularity in a predetermined direction. Peak portions of the elongated asperities, said peak portions being to project toward... | 08/29/2006 |
| 7066375 | Aluminum coating for the corrosion protection of welds A method for coating and an associated assembly including such a coating are provided. The assembly includes a workpiece defining a weld portion, such as a friction weld joint and a heat affected zone. A coating is disposed on the weld portion to at least partially ... | 06/27/2006 |
| 6627055 | Manufacture of fine-grained electroplating anodes A continuously cast copper ingot is made by a procedure in which turbulence is imparted to the metal/solid interface during the casting operation. The ingot is then hot worked to form a billet having a smaller average grain size and a larger diameter than... | 09/30/2003 |
| 6305461 | Drop leg booster for carburetors A booster equipped carburetor in which the venturi bores in the carburetor have an enhanced drop leg booster therein. The drop leg booster has a venturi orifice and a "bent" channel member. The channel member communicates fuel to the venturi orifice and p... | 10/23/2001 |
| 5787565 | Continuous rolling method Billets 10 which were continuously cast in a continuous casting machine 1 are directly supplied to a joining line 12. Scale on the billets is removed by a de-scaling apparatus 3. Then the rear end of a preceding billet is welded with the front end of a su... | 08/04/1998 |
| 4967458 | Process for renewing cylinder heads A process for renewing a cylinder head, preferably a cast aluminum water cooled cylinder head from a used condition to a rebuilt condition suitable for reuse. In a qualifying stage the used cylinder head is stripped of removable parts, inspected, heat tre... | 11/06/1990 |
| 4685192 | Appliance for removal of burrs on flame-cut slabs; blooms and billets Burrs on flame-cut semi-products are removed with the aid of a transversely guided flat chisel driven pulsatingly by a pneumatic percussion device, which reduces the advance forces required. The inclination of the flat chisel may be varied during operatio... | 08/11/1987 |
| 4317271 | Method of making metal tubes A method and apparatus for making metal tubes (12) by centrifugally casting muffs (12) in a rotating mold (10), the inner diameter of which is tapered, having a smaller diameter at the pouring end (14) and a larger diameter at the non-pouring end. The out... | 03/02/1982 |
| 4250610 | Casting densification method The hot isostatic pressure (HIP) method for densification of a metal casting which includes surface-connected discontinuities over which a coating is applied to bridge surface openings associated with the discontinuities and to prevent pressurizing fluid ... | 02/17/1981 |
| 4079312 | Continuous testing method and apparatus for determining the magnetic characteristics of a strip of moving material, including flux inducing and pick-up device therefor Continuous testing apparatus for determining the magnetic characteristics of a strip of moving material including a flux inducing and pick-up device to induce a quantity of flux into the material and dual voltage output producing coils for producing diffe... | 03/14/1978 |
| 4043023 | Method for making seamless pipe A method for making seamless pipe from molten premium steel which is cast by a centrifugal process into hollow billets. The billets are then outer diameter turned, cut to length, and bored. By such centrifugal casting followed by machining, the inner diam... | 08/23/1977 |