"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 |
| 4327781 | Wire storage and wrapping tool A wire storage and wrapping tool for making wrapped wire connections on wrapping posts incorporates a portable housing having a front end and a rear end, a hollow open-ended sleeve shaft extending through the housing and rotatably mounted therein with its... | 05/04/1982 |
| 4295275 | Method and apparatus for making raised and flat letter signs A signmaker's jig assembly incorporates a signblank-supporting worktable, a setting bar movable over the signblank for guiding the alignment of a line of letters to be installed on the signblank, a letter staging zone incorporating a letter aligning stagi... | 10/20/1981 |
| 4276594 | Digital computer with multi-processor capability utilizing intelligent composite memory and input/output modules and method for performing the same A digital computer with the capability of incorporating multiple central processing units (CPU's), utilizes an address and data bus between each central processing unit and from one to fifteen intelligent composite memory and input/output modules (MIO). D... | 06/30/1981 |
| 4273143 | Permanent wave composition By providing a single wrapping composition capable of wetting and conditioning unbleached hair fibers while simultaneously protecting, equalizing and conditioning bleached hair fiber so that both the bleached and unbleached hair fibers are capable of resp... | 06/16/1981 |
| 4262753 | Plow blade attachment system By providing a plow and scraper blade assembly with a camming and securing member at one end and a pivotable, blade locking member at the other end, along with a cooperating, interfittingly engageable plow blade, a plow and scraper blade assembly is achie... | 04/21/1981 |
| 4261789 | Device for applying a sheet-like material to a surface A device for applying paper to a wall is disclosed which has a clamp member, a carriage and an actuator. The clamp member is formed of two elongate members for holding the paper therebetween and the carriage is formed of two pairs of wire members which ho... | 04/14/1981 |
| 4261635 | Optical apparatus Optical apparatus, such as head-up display apparatus, for superimposing visual information on an observer's view of a scene or object comprises a substantially flat transmission hologram through which the observer views the scene or object, the hologram b... | 04/14/1981 |
| 4257640 | Drag reducer for land vehicles A drag reducer for a gap in a land vehicle moving through air which consists of a retractable or articulated baffle, spanning approximately the entire distance of the gap. The drag reducer can be used on all land vehicles and is readily adaptable for use ... | 03/24/1981 |
| 4247882 | Universal input/output system construction for programmable controllers By providing an input/output housing which incorporates paired slider assemblies for supportingly maintaining a printed circuit board in secure electronic engagement between a central processor and external devices, with said printed circuit board being q... | 01/27/1981 |
| 4236084 | Apparatus and method for in-line energization and de-energization of external loads in series with an external source of electricity in response to externally sensed parameters A control system for energizing and de-energizing external loads in series with a source of electricity incorporates a rectifying network having inputs in series with the alternating current source and each external load. The control system incorporates o... | 11/25/1980 |
| 4232943 | Modified Petzval lens A collimating magnifier lens which may be used in a head-up display has a focal length of F. The lens has a front part comprising at least one positive element with a focal length between +1 F and +3 F and a negative element with a focal length between -1... | 11/11/1980 |
| 4230513 | Method and apparatus for making raised and flat letter signs A signmaker's jig assembly incorporates a signblank-supporting worktable, a setting bar movable over the signblank for guiding the alignment of a line of letters to be installed on the signblank, a letter staging zone incorporating a letter aligning stagi... | 10/28/1980 |
| 4230092 | Method and apparatus for improvements in convective heating The efficiency of a convective heating system employing an elongate firebox is dramatically increased by, inter alia, increasing combustion zone volume to approach that of the firebox and increasing residence time of rising combustibles at ignition temper... | 10/28/1980 |
| 4219969 | Pivoting breakaway coupling system By securely holding a gate arm connected pivot bar in a retaining and supporting assembly which supportingly holds the pivot bar in one position and allows the pivot bar to drop free when the bar has arcuately rotated into a second position, a universally... | 09/02/1980 |
| 4215386 | Modular panel construction for programmable controller By providing a plurality of input/output housings which are removably connected to a controller interconnecting duct, with each input/output housing accommodating a plurality of input/output modules that are quickly and easily removably connected thereto,... | 07/29/1980 |
| 4213174 | Programmable sequence controller with drum emulation and improved power-down power-up circuitry A programmable sequence controller is disclosed utilizing digital and analog inputs in order to generate digital output driver signals for the control of external systems or devices. The controller emulates mechanical sequence drums so that at any one tim... | 07/15/1980 |
| 4200366 | Microform readers The invention provides a portable reader for reading, by way of a magnified image, microform material such as microfiche or microfilm. The reader has a support for the microform material and a light source to pass light through the material. A projection ... | 04/29/1980 |
| 4199217 | Infra-red optical systems The "eye-piece" for a non-Gallilean afocal infra-red telescope comprises a front element which is meniscus with a convex back surface of greater radius of curvature than its concave front surface but which has a thickness such that it is of positive power... | 04/22/1980 |
| 4197798 | Metal plated plastic base intaglio printing cylinders and plates By providing a molded or extruded plastic base cylinder or plate with a surface coating of an etchable metal, a low cost printing media is achieved for use in intaglio or gravure printing. The plastic base cylinder may be machined to a low tolerance diame... | 04/15/1980 |
| 4195864 | Multi-product coupon A printed promotional coupon comprises a multiple-product base coupon and a plurality of product stamps. The product stamps bear indicia defining a coupon redemption value for a particular product purchase. The coupon acquires value and becomes effective ... | 04/01/1980 |
| 4193615 | Rod selector guide By categorizing alternative hair textures and curl configurations in a display having various hair length and corresponding rod diameters displayed therewith, a compact, easily employable rod sector guide is achieved. In the preferred embodiment, the rod ... | 03/18/1980 |
| 4186855 | Spray pump actuating and bottle holding device By pivotally mounting a pump valve actuating lever to a bottle supporting handle assembly which is removably securable about the threaded portion of the bottle, a spray pump actuating and bottle holding device is achieved in which a plurality of product s... | 02/05/1980 |
| 4183626 | Lenses The invention provides a telephoto lens with a positive front group of lens elements, a negative middle group of lens elements and a rear positive part comprising a lens element or group of lens elements. The front group of elements includes at least one ... | 01/15/1980 |
| 4183624 | Lenses A biocular magnifying lens suitable for use as an eyepiece in a night vision device comprises from front to back a positive element which is bi-convex or meniscus convex towards the front, a negative meniscus element concave towards the front, a positive ... | 01/15/1980 |
| 4182234 | Non-destructing eggshell egg contents remover A non-destructing eggshell egg contents remover incorporates an egg receiving assembly incorporating an egg cup receptacle having a soft resilient hollow concave recess for placement of an egg therein. Protruding through the bottom portion of the egg rece... | 01/08/1980 |
| 4178075 | Lenses with distortion An objective lens particularly for use in a low light level or night vision system designed to introduce a controlled amount of barrel distortion at the edges of its field of view to permit use with a flat input faced imaging tube.... | 12/11/1979 |
| 4178072 | Optical systems Apparatus for biocular viewing comprises a collimating magnifier lens and a prismatic assembly providing inclined partially transmitting/partially reflecting interfaces between solid parts and reflecting faces parallel to the interfaces which give multipl... | 12/11/1979 |
| 4175306 | Molded spring-biased garment clamp A resiliently biassed clamp for use as a clothespin or for incorporation in a garment hanger is formed of two identical and interchangeable jaws, each having an inset trunnion flange and a flush trunnion flange interfitting in pivoting facing juxtapositio... | 11/27/1979 |
| 4173048 | Pillow configuration By providing a pillow having a central head supporting portion with two extension portions, substantially perpendicular to the central portion, an extremely comfortable, restful, sleeper-encircling pillow incorporating built-in arm rests and blanket or sh... | 11/06/1979 |
| 4172311 | Process for manufacturing solar collector panels Lightweight, economical and highly effective solar energy collector panels are formed with a sheet of transparent plastic exposed to solar radiation and spaced by a rigid lightweight spacer frame above a sheet of metallic foil, which embraces in heat cond... | 10/30/1979 |
| 4171199 | Frustoconical burner can assembly A burner can assembly for retrofitting a conventional gun type fuel burner to preheat primary air and effect a fuel/air mix within a frustoconical mixing zone and project a generally cylindrical flame pattern.... | 10/16/1979 |
| 4170735 | Portable X-ray unit By providing a hand-held remote controller capable of controlling, at a low voltage level, all operational functions of an X-ray generating module with all high voltage lines contained within the main housing, a portable X-ray unit is achieved having both... | 10/09/1979 |
| 4166466 | Repeating hemostatic clip applying instruments and multi-clip cartridges therefor The instrument is generally shaped and operated in the manner of prior clip applying instruments. Shaped like a pair of dog-nosed pliers, the outer ends of the jaws are adapted to hold a clip which may be applied to a blood vessel with the instrument. The... | 09/04/1979 |
| 4165714 | Animal handling systems An animal handling system incorporating in one embodiment a vertically movable platform connected by cables to a drive mechanism for lowering an animal into a pool of water. In another aspect, a hydrotherapeutic apparatus for horses comprises a horse acco... | 08/28/1979 |
| 4164958 | Swing check valve A swing-type check valve designed for allowing the flow of fluids in one direction only is constructed with a swinging hanger assembly comprising two hanger members, each member held pivotally captive on a hanger pin secured to the valve casing, whereby e... | 08/21/1979 |
| 4164821 | Snow plow blade attachment system By providing a plow and scraper blade assembly with a camming and securing member at one end and a pivotable, blade locking member at the other end, along with a cooperating, interfittingly engageable plow blade, a plow and scraper blade assembly is achie... | 08/21/1979 |
| 4163900 | Composite electron microscope grid suitable for energy dispersive X-ray analysis, process for producing the same and other micro-components A composite electron microscope grid for support of specimens and suitable for energy dispersive X-ray analysis is fabricated from a low atomic number composite material comprising a polymer formed from a combination of some or all of carbon, hydrogen, ox... | 08/07/1979 |
| 4163753 | Process for the simultaneous preparation of aromatic acid chlorides and aliphatic acid chlorides By reacting an aromatic compound containing at least one trichloromethyl group bonded to an aromatic carbon atom with an aliphatic acid anhydride in the presence of a catalyst, an aromatic acid chloride and an alkyl carboxylic acid chloride are produced. ... | 08/07/1979 |
| 4162536 | Digital input/output system and method A parallel process controller capable of expandable, parallel operating multi-function control of processes. The process controller comprises programmable command memory modules, data memory modules, an input/output system, a programming panel, and a high... | 07/24/1979 |
| 4160206 | Audible voltage-impedance tester An audible voltage-impedance tester for generating distinct sounds when its test probes are connected across an unknown source, be it a resistive source, a DC voltage source, an AC voltage source or combination thereof. No switching is required between re... | 07/03/1979 |