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| Number | Title | Issue Date |
| 5598618 | Mainrotor machining process and apparatus A method and apparatus for making a globoid screw for use as a mainrotor in a compressor or expander wherein a cylindrical rotor body is mounted for rotation about the longitudinal axis thereof, a cutter having a plurality of teeth at spaced locations aro... | 02/04/1997 |
| 5042137 | Dimpling and riveting method and apparatus A method for dimpling and riveting a workpiece wherein the workpiece is clamped, the dimpling, drilling and riveting are performed sequentially while the workpiece is clamped, and the workpiece is heated prior to dimpling. During clamping a pressure foot ... | 08/27/1991 |
| 5023556 | Sensor circuit response to different fluid conductivities and having time delay feature A circuit for operating a load in response to predetermined external conductivity conditions comprising a pair of sensing electrodes, a source of electrical energy connected to one of the electrodes, a load connected to the other of the electrodes, a cont... | 06/11/1991 |
| 5012590 | Disposable layout tape A layout tape is disclosed for use in positioning building materials, such as studding, joists and rafters, in a building, wherein the tape is intended to be left in place within the building upon completion. The layout tape preferably has an adhesive bac... | 05/07/1991 |
| 5005677 | Adjustable stop for locking device A stroke-limiting stop for a fluid locking device wherein movement between a piston and cylinder is influenced by fluid in the device, the stop comprising a housing having internal shape and dimension enabling one end of the cylinder to move longitudinall... | 04/09/1991 |
| 5003888 | Rail fastener applicator An applicator for applying two rail fasteners at right angle to a rail. The applicator incorporates a pair of applicator arms pivoted midway between their ends and having an hydraulic ram connected between their upper ends. This enables the abutment faces... | 04/02/1991 |
| 4991642 | Fluorine-free mold powders A glass frit composition having the theoretical oxide values (in weight %) of 0.5-9 Li2 O, 29-38 Na2 O, 0-25 CaO, 5-10 B2 O3 and 38-50 of SiO2 is characterized in that it is virtually fluorine-free an... | 02/12/1991 |
| 4988291 | Orthodontic appliance and method An orthdontic/facial orthopedic appliance for use in applying a pulling force to select teeth, the associated arch, and or jaw component(s) for moving/modifying and positioning the same. The appliance includes a frame supported primarily on the forward cr... | 01/29/1991 |
| 4966323 | Five axis riveter and system Riveting apparatus for operation on a workpiece having opposite sides and supported vertically on a horizontal surface comprising a frame having a pair of spaced apart sides movable along the supporting surface and straddling the workpiece, first and seco... | 10/30/1990 |
| 4964877 | Non-aqueous lithium battery A solid cathode liquid organic electrolyte lithium cell for delivering high current pulses comprising a casing, a cathode structure in the casing comprising a plurality of plates in spaced apart relation, a lithium anode comprising a plurality of anode se... | 10/23/1990 |
| 4958267 | Portable lamp A portable electric lamp of explosion-proof construction including an elongated hand grip, an elongated flourescent bulb having a U-shaped joint light-generating portion supported at one end of the hand grip and a transparent tube positioned about the lig... | 09/18/1990 |
| 4954184 | Solder tinning paste for automolbile application A new and improved solder tinning paste composition suitable for use as an underlay for metallic solder when solder filling base metal braze joints to facilitate formation of the solder joint between the base metals. The paste composition comprises substa... | 09/04/1990 |
| 4946595 | Process and apparatus for re-cycling engine coolant A process for physically and chemically treating a used engine coolant containing one or more glycol and/or alcohol-based antifreeze components. The process includes the steps of oxidation with one or more known oxidizing agents, precipitation with one or... | 08/07/1990 |
| 4934289 | Hole-forming gardening device A gardening device facilitating the planting of seeds, bulbs or the like includes a platen member having two opposite sides and a plurality of pegs releasably secured to one side of the platen member so as to project therefrom. A carrying handle is attach... | 06/19/1990 |
| 4934048 | Method of making surface mountable electronic device A surface mountable electronic device and method of making same wherein a discrete electronic device is encapsulated in a body of electrical insulating material having opposite ends and a mounting surface extending between the ends, and an electrode is pr... | 06/19/1990 |
| 4934306 | Anode coating for lithium cell In an alkali metal/halogen or oxyhalide electrochemical cell wherein an alkali metal anode, preferably lithium, has a surface in operative contact with a halogen-containing or oxyhalide cathode/electrolyte including a solvent if necessary, a coating on th... | 06/19/1990 |
| 4928878 | Fastening rails to wooden sleepers Spikes for holding elastic rail clamps for use with wooden rail ties. The spike portion incorporating recesses in its surface to accommodate an adhesive which improves adhesions between the spike and the wooden tie. The lower end of the spike which faces ... | 05/29/1990 |
| 4928057 | High speed D.C. non-contacting electrostatic voltage follower A non-contacting electrostatic voltage follower comprising a detector electrode sensitive to electrostatic quantities such as electrostatic fields, voltages, charges and the like, a modular coupled to the electrode for modulating the capacitance coupling ... | 05/22/1990 |
| 4917348 | Filling nozzle cut-off valve A diaphragm valve suitable for use as filling nozzle cut-off valve in the container filling industry. The valve includes a valve head (18) having a operational surface (62) provided with a centrally located shallow recessed portion (64) and an air hole (6... | 04/17/1990 |
| 4909657 | Straddling dowel for anchoring in a bore having an undercut Straddling dowel for anchoring in a bore having an undercut, comprising an expanding shell (10) having an axial bore (12, 14), which tapers gradually towards the front, for guiding a spreader (26) and having lamellae (28), which are formed by longitudinal... | 03/20/1990 |
| 4905688 | Portable light weight completely self-contained emergency single patient ventilator/resuscitator A portable light weight completely self-contained emergency single patient ventilator/resuscitating apparatus (10) usable at the scene of an emergency by persons with minimal training. The apparatus (10) includes a housing assembly (12) which supports a s... | 03/06/1990 |
| 4901943 | Apparatus for dispensing thread from a spool Apparatus for dispensing at least one thread to the head of a recipient of a hair replacement unit for interweaving the thread with the recipient's natural hair comprising a housing including a front wall defining an opening and including a cavity for sup... | 02/20/1990 |
| 4901836 | Settable slip clutch A settable slip clutch or coupling between a driving (1) and a driven (2) shaft includes balls (11) accommodated in recesses (3) on the driving shaft and in engagement with chambers (18) in the driven shaft. To achieve an unloading effect when the clutch ... | 02/20/1990 |
