Did You Know...
...that the first rickshaw was invented in 1869 by an American Baptist minister, the Rev. E. Jonathan Scobie, to transport his invalid wife around the streets of Yokohama?
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| Number | Title | Issue Date |
| 4216803 | Self-sealing fuel lines A puncture sealing apparatus for handing a fluid such as aircraft fuel, and a method for manufacturing a puncture sealing apparatus for handling a fluid. A metallic tubular member is provided which defines a chamber for the fluid; the metallic tubular mem... | 08/12/1980 |
| 4161212 | Pneumatically controlled wide heat load space radiator A three way valve selectively charges or discharges gas under pressure within the annular gaps between a series of transversely extending longitudinally spaced radiator tubes fixed to a radiator panel to control waste heat rejection and coaxial inner tube... | 07/17/1979 |
| 4104523 | Electronic alpha particle counter There is provided an improved radon-222 detector device for counting alpha particles originating from radon-222 gas including an alpha particle permeable window in one end of a body and a surface barrier type semiconductor detector adjacent thereto and sp... | 08/01/1978 |
| 4083636 | Navigational instrument A navigational system for spacecraft use utilizes two telescopes gimbaled on a common axis to measure the scalar angle between a star and the lunar limb. The common axis is the axis of rotation of a momentum wheel carrying a narrow mirror. When each track... | 04/11/1978 |
| 4082462 | Automatic space sextant A navigational system for spacecraft utilizes two telescopes gimbaled on a common axis to measure the scalar angle between a star and the lunar limb. The common axis is the axis of rotation of a momentum wheel that carries a light source on it for the gen... | 04/04/1978 |
| 4069864 | Gas filled swivel joint for cryogenic heat pipes In a vacuum environment such as space, conductive ball and socket members are fixed to respective heat pipes for permitting orthogonal movement of one heat pipe relative to the other and the gap between the ball and socket members is maintained under a li... | 01/24/1978 |
| 4068156 | Rate control system for manipulator arms A manipulator system having a master control console and a slave mainpulator arm controlled by signals from the master control console is disclosed. The master control console includes a translation controller and a rotation controller, and the slave mani... | 01/10/1978 |
| 4061425 | High resolution alignment interferometer In an interferometer a beam-splitter reflector such as a compound prism is provided having an interface and a base normal thereto. An entrance face and exit face are aligned with respect to the interface to provide a zero order interface fringe along an a... | 12/06/1977 |
| 4028522 | Multi-mode structural weld monitor on a time base To provide a plurality of different weld quality indicators in resistance, projection and forge welding, the varying separation of two electrodes during a plurality of different time brackets defined within a weld cycle is measured. At least one interval ... | 06/07/1977 |
| 4013264 | Flow control valve with isolated sequence control mechanism A cylindrical flow tube of tapered cross section bears a spherical valve poppet on one side and is mounted within the valve casing for rotation between an axially in-line position relative to an annular valve seat and a position at right angles thereto, t... | 03/22/1977 |
| 3971891 | Adaptable time division switch A switching network is disclosed that is capable of handling analog, PCM and CVSD signals connected to said network via loops or trunks. All signals are converted into CVSD format, synchronized to the network clocks, and switching is carried out on a time... | 07/27/1976 |
| 3945863 | Process for treating metal powders A process for pretreating metal powders for the preparation of dispersion hardened metal alloys whereby an iron, cobalt or nickel base metal powder is homogeneously mixed with a chromium powder and with a prealloyed metal carbide powder and granulated to ... | 03/23/1976 |
