"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 |
| 4659080 | Racquet handle A racquet for use in tennis and racquet ball having an offset handle having an angular deviation of 13° with respect to the longitudinal axis of the racquet. The handle may have a cross-sectional area having a round or oval shape. The oval configuration ... | 04/21/1987 |
| 4655365 | Hatch cover lock A railway hopper car has a hatch opening defined by its upper deck surface. A hatch cover is adapted to close the hatch opening. A hinge arrangement is connected with the upper deck surface and a locking arm extends from the hinge arrangement and across t... | 04/07/1987 |
| 4651771 | Hydrant protective cap and cover structure and operating wrench therefor A fire hydrant cap and cover assembly which is provided with a hydrant operating wrench therefor. The cap of the assembly has an interior threaded cap portion which attaches to the threaded portion of the hydrant water outlet discharge pipe. The exterior ... | 03/24/1987 |
| 4651650 | Axle stabilizer for railway truck An elastomeric pad placed in shear and having one portion or surface engaged with a portion of a railway car body and another portion or surface engaged by pivotal linkage means to a wheel housing dampens vibrations of a wheel and axle assembly which is r... | 03/24/1987 |
| 4633787 | Light weight gondola type railway car A light weight, aerodynamically efficient gondola car for hauling bulk cargo, such as coal, ores and grains, has a cargo carrying structure formed of welded aluminum. A side sill member formed of extruded aluminum has side and bottom connective portions w... | 01/06/1987 |
| 4630548 | Center sill horizontal divider A railway car underframe includes a center sill having a central section and opposite end sections. The sill includes spaced vertical walls, and upper and lower walls which are slotted in registry the length of the central section, and which form in cross... | 12/23/1986 |
| 4630547 | Cross bearer arrangement for slotted center sill A railway car underframe includes a center sill having a central section and opposite end sections. The sill includes spaced vertical walls, and upper and lower walls which are slotted in registry the length of the central section, and which form in cross... | 12/23/1986 |
| 4630546 | Double groove center sill A railway car underframe includes a centersill having a central section and opposite end sections. The sill includes spaced vertical walls, and upper and lower walls which are slotted and in registry the length of the central section, and which form in cr... | 12/23/1986 |
| 4626154 | Trailer hitch with elastomer in shear cushioning A trailer hitch for securing trailers to a platform or deck of a railway flat car comprises an upright pedestal pivotally connected so that it and a fifth wheel plate can be attached to the kingpin of a trailer. The hitch includes a diagonal assembly pivo... | 12/02/1986 |
| 4624189 | Heated outlet valve for railway tank car A valve attachment flange comprising the lading outlet for a railway tank car is placed in an insulative space between a heat element, heated fluid medium carrying heat ducts and the bottom of the car. The outlet is surrounded by a heat chamber in fluid f... | 11/25/1986 |
| 4622902 | Hatch cover and locking structure The hatch of a cargo vessel, such as the hopper of a covered hopper car, is sealed by a hatch cover having a locking arrangement which prevents the hatch cover from being blown open by pressure within the hopper upon unlocking the lock. An over center loc... | 11/18/1986 |
| 4622729 | Apparatus for removing burrs from welded material A scarfing apparatus for removing a weld bead from a tube being produced by a continuous method, wherein the tube enters one end of a hollow spindle which rotatably supports a scarfing tool holder on which is mounted a tool bit. The tool bit has an arcuat... | 11/18/1986 |
| 4620487 | Aerodynamically structured railway car Air flow guide members at each end of the cargo carrying structure of an open top gondola type railway car, together with rounded transition or corner surfaces on the exterior of the car and aerodynamically shaped and oriented cross braces within the car ... | 11/04/1986 |
| 4603733 | Heated railroad tank car A heated tank such as in a railroad tank car has a heat exchanger spaced from the bottom of the car to define a dead air space to insulate the heat exchanger from the bottom. The heat exchanger extends substantially longitudinally and transversely across ... | 08/05/1986 |
| 4590864 | Single axle truck suspension for railway flat car A railway flat car is supported on an underframe which includes suspension support frames provided with single axle suspensions. The frames include longitudinally spaced bolsters including horizontal frame structures on which leaf springs are supported wh... | 05/27/1986 |
| 4589346 | Axle stop arrangement for single axle wheel truck for a skeleton type railway car The wheel and axle assembly of a single axle wheel truck for a railway car is prevented from exceeding acceptable lateral and longitudinal movement with respect to fixed body portions of the railway car by an axle stop arrangement positioned laterally out... | 05/20/1986 |
| 4573843 | Hitch mounting means Pivot mounts for enabling pivotal attachment of support struts of a fifth wheel hitch assembly to the deck of a raiway car are provided with a fabricated inverted U shaped torque box or beam fixed transversely between upright pivot mount plates of the cen... | 03/04/1986 |
| 4570807 | Railway car underframe A railway car underframe comprises a center sill having bell mouth draft housings at opposite ends thereof. The housings accommodate the use of drawbars or shank type couplers. With the use of a shank type coupler a draft housing extension is secured to t... | 02/18/1986 |
| 4562760 | Tube notching apparatus Apparatus for cutting notches in the ends of tubing comprises an upright support and a horizontal base member. The upright support includes a ram guide and leverage mechanism for reciprocating a ram. The ram is provided at its lower terminal end with a cu... | 01/07/1986 |
| 4553642 | Brake arrangement for single axle wheel truck of railway car The brake beams of a single axle railway car wheel truck are swingingly suspended from a body portion of the car and engage with the axle housings of the wheel and axle assembly to enable the brake beams to move laterally and longitudinally with the wheel... | 11/19/1985 |