Did You Know...
...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 7814881 | Engine connecting rod and crankshaft assembly A four cycle piston engine has a crankshaft that includes a crank pin and a guide pin rotatable as a unit around the crankshaft rotational axis. The connecting rod has a linear trackway that slidably engages the guide pin so that the rod has linear slidable motion r... | 10/19/2010 |
| 4881293 | Wedge member for use on carpeted floors A wedge member usable as a door stop on a carpeted floor. Special triangular cross-sectioned grooves are formed in the lower face of the wedge member to bend and trap carpet pile yarns, whereby the wedge member is prevented from sliding out from beneath t... | 11/21/1989 |
| 4839871 | Underwater communication device An underwater speaker system having a pressure equalization system enabling the speaker to operate in its intended fashion over a wide range of water depths, e.g. from two feet up to sixty feet. Water pressure is applied to a diaphragm that forms one wall... | 06/13/1989 |
| 4836483 | Support mechanism for insect repellant holder A support device for a bug repellant holder, wherein the device is attachable to a conventional wrought iron railing. Vertical posts in the railing serve as attachment points as well as confining mechanisms for the bug repellent holder.... | 06/06/1989 |
| 4787123 | Oyster shucking device A device for separating the shells of an oyster and removing edible meat cleanly from one of the shells. A flat-surfaced blade is inserted into the hinged connection between the shells and then twisted around the blade axis to break the shells apart. The ... | 11/29/1988 |
| 4743904 | Military countermeasures passive signature cancellation system A radiometric countermeasures system installable on a military tank to det a passive millimeter wave sensor in a guidance system on an enemy missile. The system comprises an oscillator source of mm waves; a variable attenuator connected to the oscillator... | 05/10/1988 |
| 4738230 | Variable compression ratio control In an internal combustion engine, an improved mechanism for adjusting the rotational axis of the crankshaft to vary the engine compression ratio. The crankshaft is supported at spaced points therealong in circular disks that are swivably adjustable about ... | 04/19/1988 |
| 4736965 | Vehicle suspension A vehicle suspension wherein hydraulic fluid is delivered to or from each spension unit via a pilot-operated shuttle valve. Each shuttle valve is controlled by the pressure within the suspension unit, such that suspension force is maintained during jounce... | 04/12/1988 |
| 4733596 | Add-on missile container for military vehicles For use on a military vehicle a missile container wherein a pop-up rack scture is utilized to carry individual missiles. When the container cover is opened a linkage mechanism elevates the pop-up rack structure to present the missiles above the container... | 03/29/1988 |
| 4723473 | Detachable connection between a military tank and a mine roller assembly A detachable hinge-like connection between a military tank and a mine rol assembly; the hinge connection is designed to be broken (disconnected) from a remote point, e.g. from within the tank, whereby the mine roller assembly can be left on the battlefie... | 02/09/1988 |
| 4719323 | Simplified vehicle lighting switch A rotary circuit-selector switch wherein a manual actuator knob must be pushed in and then rotated in order to effect a switching action. A releasable retainer or detent assembly is provided within the switch housing to maintain the switch in selected pos... | 01/12/1988 |
| 4715754 | Tiedown assembly In a flat bed cargo vehicle having a series of upwardly-opening pockets spaced therealong, and cargo tie-down anchor members swingably disposed therein: the improvement wherein each pocket has a porous bottom wall permitting water to drain out of the pock... | 12/29/1987 |
| 4715248 | Manual differential lock-up An improved mechanism for delivering motive power to the wheel-tire units on a land vehicle, comprising a differential having two operating modes, namely a "locked" mode and an "unlocked" mode. The unlocked mode is used when a tire is punctured; differenc... | 12/29/1987 |
| 4702027 | Thermal liner for gun firing chamber A liner for the firing chamber of a gun, designed to prevent ammunition "cook-off". The liner minimizes flow of heat into the chamber wall, incident to the combustion process. The liner also retards the flow of heat in the reverse direction, i.e. from the... | 10/27/1987 |
| 4693320 | Fire suppression test apparatus A military tank is equipped with an auxiliary (extra) power source located utside the tank. With the tank engine inactive (non-running) the auxiliary power source can be energized to deliver power to the engine transmission and to the air-coolant fans for ... | 09/15/1987 |
| 4683801 | Remotely-operated travel lock for vehicle main gun A remotely-operated lock mechanism for the main gun of a military vehicle. n arm structure is swingable between a prone (inactive) position and an upright position disposed to bear the weight of the main gun. A clamp device is swingably attached to the arm... | 08/04/1987 |
| 4683797 | Line charge detonation interlock assembly An existing military system for clearing a path through an enemy mine field (by use of an explosively-charged line) is equipped with a safety mechanism for preventing premature detonation of explosive charges. The safety mechanism includes means responsiv... | 08/04/1987 |
| 4681148 | Tire deflation mechanism A semi-automatic tire deflation device attachable to a tire filler valve. A spring-urged plunger mechanism within the device is alignable with the filler valve element so that manual depression of the plunger mechanism opens the filler valve to start the ... | 07/21/1987 |
| 4679459 | Concave-convex gear pair having staggered teeth A spur gear system wherein each gear comprises two gear sections; gear te in the respective sections are staggered a one half tooth pitch distance. The effect is to achieve a relatively high contact ratio with relatively small diameter gears. Teeth on ma... | 07/14/1987 |
| 4671162 | Protective box for explosive line launcher A military tank is equipped with an armored box structure in the space nolly occupied by the gun turret. A lid on the box structure is raisable to an inclined position suitable for the firing of a missile carried on the lid undersurface. As the missile i... | 06/09/1987 |
| 4671614 | Viewing of objects in low visibility atmospheres A viewing system for use in low visibility atmospheres, such as fog, rain, snow, dust, smoke, etc., particularly under nighttime conditions. A cyclically-operated pulsed light source illuminates the scene for brief instances. A shutter is operated in sync... | 06/09/1987 |
| 4655514 | Sound reduction for tracked vehicles An add-on mechanism for high pitched sounds emitted by the tracks of miliy vehicles. Centerguide structures on the tracks are equipped with special U-shaped vibration dampers. Squeaks (high pitched sounds) associated with rubbing contact between the cent... | 04/07/1987 |
| 4655619 | Tapered roller bearing A resilient hollow annular frustro-conical roller bearing whose wall thicss varies according to the roller diameter. Any abnormal load placed upon the roller causes an increase area of contact between the roller and the opposing race surfaces. The hollow... | 04/07/1987 |
| 4619590 | Air diverter for supercharger An engine supercharger is modified to include an auxiliary turbine downstream from the main turbine wheel. The main shaft of the supercharger is tubular (hollow) to accommodate a second shaft. The opposite ends of the second shaft are suitably connected t... | 10/28/1986 |
| 4607547 | Stripped hex head drive socket A socket wrench modified by the addition of auxiliary gripper ribs to either prevent bolt head stripper action or to minimize the adverse effects of such stripper action. In one case the bolt head is initially formed to have grooves in its side surfaces m... | 08/26/1986 |
| 4601633 | Hoist A hoist that includes a winding drum for a load-lift cable mechanism. The um has two drum sections of slightly different diameter; end portions of the cable are wound in different directions on the drum sections, so that one cable section winds onto a dru... | 07/22/1986 |
| 4598750 | Tire inflation/deflation system An automatic tire inflation/deflation system for a vehicle with pneumatic tires. The system may be incorporated into existing vehicles without modification of the axles, wheels or tires. A pressure-responsive bellows is utilized at each wheel to open or c... | 07/08/1986 |
| 4582107 | Vehicle tire inflation-deflation mechanism A compressed air passage system carried by an axle on a road vehicle for nsferring compressed air from/to a central air pressure source to/from the associated vehicle wheel. The passage system comprises a specially-constructed duct installable in a clear... | 04/15/1986 |
| 4581887 | Pulsation valve A valve mechanism for delivering time-spaced pulses of coolant air to coog passages within a turbine engine. The mechanism is designed for varying the pulse frequency to ascertain the affect that pulse frequency variations have on the cooling effect. The... | 04/15/1986 |
| 4580943 | Turbine wheel for hot gas turbine engine A turbine wheel for a hot gas turbine engine operable at relatively high peratures, e.g. above 2,000° F., and high velocities, e.g. above 30,000 r.p.m. The blades are formed of temperature-resistant ceramic material. A special annular band of high tensi... | 04/08/1986 |
| 4575870 | Remote control of industrial fluoroscope An industrial fluoroscope having a television camera optically trained on the area between the X-ray tube and the fluoroscope to provide pictorial information on the tube-test object spacing and the tube-fluoroscope spacing. The pictorial information is d... | 03/11/1986 |
| 4570691 | Tire pressure regulation system A vehicle wheel-tire assembly wherein the tire has a low inflation pressure (large tire footprint) in a low vehicle speed range, and a large inflation pressure (small tire footprint) in a high vehicle speed range. The tire is partitioned into a series of ... | 02/18/1986 |
| 4569363 | Tire deflation mechanism A hand held mechanism that can be applied to a conventional tire inflation valve on a vehicle tire to facilitate a tire deflation operation. The mechanism includes a rod-like element that automatically engages a tire check valve to open said valve for tir... | 02/11/1986 |
| 4569234 | Torque sensor In a rotary drive system, mechanical means for sensing turning torque gented by the load forces. The sensing means is designed to operate with minimal effect on normal operation of the drive system.... | 02/11/1986 |
| 4568995 | Electromagnetic interference suppression in a vehicle horn circuit In a military vehicle having an electric horn actuator circuit, the improent comprising the addition of a capacitor in the circuit at a location between a brush and contact ring assembly disposed within the vehicle steering column. The capacitor is elect... | 02/04/1986 |
| 4567787 | Compound planetary hydro-mechanical transmission with speed-responsive centrifugal clutch means A hydro-mechanical transmission wherein the mechanical power path comprises three planet gears rotating at different speeds (for any given speed of the associated sun gear). The hydrostatic power path includes a different sun gear, three other planet gear... | 02/04/1986 |
| 4564356 | Laboratory turret shaker A mechanical shaker mechanism used in the laboratory for imparting oscillry motions to a military tank turret. The mechanism can be programmed to duplicate test track conditions at lesser cost then would be required to operate a complete tank on a provin... | 01/14/1986 |
| 4558606 | Variable speed drive A variable speed drive that uses cone clutch surfaces, and an adjusting manism for shifting certain ones of the cone surfaces parallel to the cone angle, thereby changing the speed ratio between the input and output members. The engaged clutch surfaces p... | 12/17/1985 |
| 4533183 | Military wheel-tire assembly A mechanism for protecting the tires of military vehicles from destruction y enemy small arms fire. The mechanism includes a plate or disk of armor material radiating from the vehicle wheel to a point slightly less than the expected radial deformation of t... | 08/06/1985 |
| 4531847 | Shaft-mounted equipments An adjustable shim structure for use between shaft-mounted equipments and aft-support bearings, whereby axial play of the equipments is prevented. The shim structure includes two collars having meshed threads enabling the collars to be rotated relative to... | 07/30/1985 |
