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| Number | Title | Issue Date |
| 5913379 | Articulated aerial work platform system An articulated aerial platform system having a lift assembly including an upper parallelogram riser and a lower parallelogram riser. The upper and lower risers are raised and lowered by a single riser cylinder mounted between a base of the system and the ... | 06/22/1999 |
| 5790422 | Method and apparatus for determining the quantity of a liquid in a container independent of its spatial orientation A sensor apparatus is described that detects and indicates the quantity of cryogenic liquid in a Dewar container independent of the spatial orientation and physical motions acting on the Dewar container. The sensor apparatus comprises a first conductor, p... | 08/04/1998 |
| 5772976 | Chemical gas generator A chemical oxygen or other gas generator which has a container composed of thermally-conductive and gas-impervious material which contains pyrotechnic material, the container being in heat transfer relation with a block of oxygen-producing material for tr... | 06/30/1998 |
| 5745377 | Method and apparatus for determining quantity of liquid in a container and/or lack of motion thereof A sensor apparatus is described that detects and indicates the volume of cryogenic liquid in a Dewar container independent of the spatial orientation and physical motions acting on the Dewar container. The sensor apparatus comprises a first conductor, pre... | 04/28/1998 |
| 5726908 | Liquid quantity sensor and method A sensor apparatus is described that detects and indicates the quantity of cryogenic liquid in a Dewar container, independent of the spatial orientation and the physical motions acting on the container.... | 03/10/1998 |
| 5720360 | Limited slip differential hydraulic drive system An hydraulic drive system for driving a plurality of wheels of a vehicle. The drive system comprises an hydraulic fluid source, at least two motors for driving the vehicle wheels, a pump connected between the fluid source and the motors for drawing hydrau... | 02/24/1998 |
| 5704073 | Quick donning goggles for use with breathing mask A face mask for covering the nose and mouth of the wearer for supplying breathing gas thereto and a pair of strapless goggles which are easily and quickly donnable. The goggles are detachably attachable to the face mask by a tongue-and-groove connection w... | 01/06/1998 |
| 5689968 | Apparatus for providing a conditioned airflow inside a microenvironment and method An apparatus for providing a conditioned airflow inside a microenvironment using a portion of the breathing supply diverted to an ejector from a breathing respirator gas stream, is described. The respirator includes an expansion ejector and the microenvir... | 11/25/1997 |
| 5572880 | Apparatus for providing a conditioned airflow inside a microenvironment and method An apparatus for providing a conditioned airflow inside a microenvironment using a portion of the breathing gas supply diverted to an ejector from a breathing respirator gas stream, is described. The respirator, such as a liquified-gas type respirator, in... | 11/12/1996 |
| 5567053 | Temperature sensing apparatus A temperature sensing apparatus (10) adapted for sensing the temperature of a food item or the environment in an oven includes a body (12) which encloses a chamber (38). The chamber houses an indicator (22) which is viewed through a frangible glass pane (... | 10/22/1996 |
| 5438320 | Personal alarm system A motion responsive alarm system including a motion sensor having a housing with a rotatable disk therein, a slot in the disk and a ball bearing in the slot and being loosely confined within an annular chamber in the housing surrounding the disk. The disk... | 08/01/1995 |
| 5433927 | Ozone generator having a conductor with projections extending through an inner electrode and associated fabrication method An ozone generator includes an inner electrode formed of a mass of helical windings through which an elongate electrical conductor extends. The elongate conductor is preferably a metal strip having opposing rows of sawtooth projections extending outwardly... | 07/18/1995 |
| 5419450 | Storage canister for protective breathing equipment A storage canister apparatus (10,110) particularly useful for housing a Protective Breathing Equipment (PBE) device therein, is described. A first embodiment of the storage canister comprises a container (12) provided with a removable closure means in a v... | 05/30/1995 |
| 5414233 | Method of electrical discharge machining for manufacture of Belleville springs A circular steel blank (10) having a central opening (12) is first press formed into a frusto-conical shape and then subjected to a heat treating process to provide the unfinished spring with the requisite shape and hardness. The spring is then mounted in... | 05/09/1995 |
| 5408995 | Continuous flow passenger oxygen dispensing unit A continuous flow passenger oxygen dispensing unit of the type used on pressurized aircraft by passengers during decompression emergencies. The present invention includes an integrally reinforced reservoir bag with an easily connectable and detachable cou... | 04/25/1995 |
| 5337417 | Rib protector A rib protector is disclosed for protecting a player's torso while playing athletic events, such as football. The rib protector includes an pad having an inner surface and an outer surface opposite the inner surface. A flexible belt is attached to the out... | 08/16/1994 |
| 5312188 | Temperature sensing apparatus A temperature sensing apparatus (10) adapted for sensing the temperature of a food item in an oven includes a body (12) which encloses a chamber (34). The chamber houses an indicator (20) which is viewed through a glass pane (28). Slight amounts of water ... | 05/17/1994 |
| 5273084 | Gas flow check valve for bottle filling device A gas flow check valve for a bottle filling device employs a piston received within a bore which is maintained at the bottom of the filling head vent tube. The piston has a head thereon which is interposed within the flow path of escaping gas during the f... | 12/28/1993 |
| 5253365 | Baseball or softball glove constructed to facilitate closure of the glove A baseball or softball glove constructed to facilitate closure of the glove. The glove is designed readily to flex along a flex line extending up from the heel of the glove, generally midway between the sides of the glove, and through the ball-catching po... | 10/19/1993 |
| 5167680 | Vacuum cleaner bag assembly A bag assembly for a vacuum cleaner of the type having a housing defining a bag-receiving compartment, and a lid for closing an opening in the housing above the bag-receiving compartment. The bag assembly comprises a bag having a side wall with upper edge... | 12/01/1992 |
| 5159641 | Microphone circuit control mechanism for breathing apparatus A microphone circuit control mechanism which is utilized to control the output of a microphone (20) disposed in a breathing mask (12) the microphone circuit extending to a communications device (22) and wherein the microphone circuit control mechanism inc... | 10/27/1992 |
| 5146621 | Shoulder pad A shoulder pad comprising a left-hand member which fits over the left shoulder and a right-hand member which fits over the right shoulder. Each of the members is of generally inverted U-shape as viewed from the side and has a chestplate portion, a backpla... | 09/15/1992 |
| 5145032 | Mason's scaffold Standard platforms are integrated into a mason's scaffold to reduce manufacturing and assembly costs. The standard platforms having hooks on both ends. The hooks are supported on lower horizontal members of respective rectangular frames. Platform fastener... | 09/08/1992 |
| 5113854 | Quick-donning protective hood assembly A quick-donning protective hood assembly for respiratory protection from smoke and noxious gases. The assembly consists of a clear "TEFLON" film hood (12) having a scrubber canister (20) and an exhaust valve (42) supported thereon. A neck seal (14) is con... | 05/19/1992 |
| 5100108 | Guard fence system A guard fence system is useful for preventing persons from falling off bleachers. The guard fence system comprises at least two upright posts mounted to the bleachers. Each post has a lower U-channel and an upper U-channel spaced a predetermined distance ... | 03/31/1992 |
| 5088527 | Choke valve for bottle filling device A bottle filling apparatus is provided in which a non-contact choke valve is employed. The choke valve comprises a disc having an outer cylindrical wall which is received within a valve seat having an inner cylindrical wall. The cylindrical walls have a c... | 02/18/1992 |
| 5069205 | Quick-donning head harness assembly A quick-donning head harness assembly (10) used in combination with a respirator face mask assembly (12) of the type including a rigid facepiece (14) and a flexible face seal (16), which head harness assembly and face mask assembly may be quickly donned a... | 12/03/1991 |
| 5063725 | Method and apparatus for applying rectangular closures to rectangular containers A method and apparatus for applying closures to containers, and capable of applying stake-on caps having generally rectangular cross-sectional exterior surfaces to container whose bodies are also of the same general cross-section, the parts being delivere... | 11/12/1991 |
| 5002177 | Case drive conveyor A conveyor or case drive mechanism includes a continuous chain loop having two or more drive motors positionally spaced there along. A sensor is associated with the motors for sensing slack in the chain at the associated motor. When a predetermined amount... | 03/26/1991 |
| 4960121 | Half-face mask assembly An improved half-face mask assembly (10) which can be easily donned and doffed. The assembly includes a hard shell (12), a rubber-like face seal (14), a head harness assembly (16) and two harness anchors and adjusters (18). These parts can be readily asse... | 10/02/1990 |
| 4949808 | Aerial apparatus and stabilizing means therefor An aerial apparatus swingable outwardly of a fire truck chassis is stabilized by outriggers on opposite sides of the chassis with the aerial apparatus being swingable to one side or the other only if an extendible section of an outrigger for that side has... | 08/21/1990 |
| 4941546 | Aerial ladder rotation limiter A fire truck includes an aerial ladder mounted on a rotatable base and outriggers on each side of the truck to stabilize the ladder in use. The outriggers may be deployed on only one side of the vehicle to permit use in confined areas. The ladder base is ... | 07/17/1990 |
| 4930578 | Automatic sprinkler An automatic sprinkler having a force transmitting mechanism for releasably maintaining a water outlet closed includes a frangible glass bulb having a very quick response characteristic to thermal input. Substantially less than one-half the force transmit... | 06/05/1990 |
| 4925631 | Method of casting a hopcalite filter and cast ceramic fiber-hopcalite A method of making a cast hopcalite filter. The filter is formed by adding to "green" hopcalite a given weight of ceramic fibers. Additional water may also be added as required. This mixture is blended briefly in a high speed blender and then poured into ... | 05/15/1990 |
| 4921177 | String positioning device and method A string positioning device to attach strings on a core to wind baseballs includes a holding device to hold an end of the string leaving a free end free with a head member with a face facing in the general direction that the string is to be positioned alo... | 05/01/1990 |
| 4909247 | Aircraft emergency breathing assembly An emergency breathing assembly adapted for use in an aircraft to automatically present a breathing mask to a user upon a loss of cabin pressurization. The assembly includes a storage container having an access opening for deployment of the mask stowed wi... | 03/20/1990 |
| 4891189 | High flow chemical oxygen generator assembly A high flow sodium chlorate oxygen generator assembly (10) of a relatively small diameter. The generator assembly includes a chlorate candle (12) mounted within a containment vessel (14, 16, 18), the chlorate candle being provided with a deep conical rece... | 01/02/1990 |
| 4877655 | Ball holding and cementing apparatus and method A holder and cementing apparatus for string wound baseball cores includes six vertically downwardly depending tines arranged in a circular pattern to allow the ball to be wedged between the tines with an ejector pin moved upwardly by engagement of the bal... | 10/31/1989 |
| 4855583 | Structure and method of making combination proximity/insertion identification cards An identification card contains retrievable identification data in at least two formats. One format comprises a magnetic material that stores magnetically encoded data. Another format comprises electronic circuitry that stores electronically encoded data.... | 08/08/1989 |
| 4844460 | Method of fabricating a ball-striking implement A method for fabricating a bat for striking a ball. The bat has a tapered barrel and a tapered handle and is formed of at least two pieces. Each piece, in its barrel, has a recess formed in it of a length less than the length of the barrel and which is fo... | 07/04/1989 |
