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| Number | Title | Issue Date |
| 4819804 | Slide holder A package for transporting a glass slide which carries a specimen for laboratory analysis makes use of a particularly light-weight yieldable material of the nature of Styrofoam. A thin base sheet of the material is provided with a rectangular recess sligh... | 04/11/1989 |
| 4632407 | Inside/outside chucking device For selective outside or inside chucking of a workpiece on a lathe use is made of a base unit split to provide a set of three or more holding segments capable of being either contracted for grasping the exterior of a workpiece or spread for grasping the i... | 12/30/1986 |
| 4632657 | Apparatus and method for injection molding of elongated hollow plastic container walls Straight walled hollow containers may be molded without taper, according to the present invention. Two mold halves, when brought together define a cavity configured to the outer wall of a hollow plastic container to be injection molded, and also an openin... | 12/30/1986 |
| 4616491 | Key operated electronic lock A special type of key is made use of to actuate an electronically triggered release mechanism to unlock a door. To enable the electronic means to function, insertion of the key in the keyway initially closes a switch to energize the electronic circuit. Al... | 10/14/1986 |
| 4609003 | Method and apparatus for generation of a pneumatic feedback trigger signal An entirely pneumatic feedback signal can be generated within a gas delivery system by diverting the portion of the gas from the main supply line to a cryostat. The gas is cooled in the cryostat and flows within a restricted passageway defined by the cryo... | 09/02/1986 |
| 4608571 | Collapsible parabolic reflector A portable, lightweight, folding parabolic reflector antenna for reception of microwave signals includes an axial wave guide tube which constitutes the main structural supporting member of the antenna, a ten to fifteen foot diameter dish mounted to the wa... | 08/26/1986 |
| 4606416 | Self activating, positively driven concealed core catcher A core spring type core catcher and a full closure core catcher are completely concealed from the core within a coring tool. The full closure catcher is reliably actuated to assume a closed configuration without dependence upon gravity or an interference ... | 08/19/1986 |
| 4603931 | Anti-theft device for appliances with electrical AC power cords The AC plug of an appliance is captured within an enclosure mounted to an electrical power outlet, the AC power cord of the appliance extending through restricted openings in the enclosure provided with relatively sharp edges so as to cut through the cord... | 08/05/1986 |
| 4603749 | Apparatus for downward displacement of an inner tube within a coring barrel Downward displacement of an inner tube with respect to the outer tube in a coring tool is effectuated by an apparatus comprising a bearing assembly, a cylinder, a piston telescopically disposed within the cylinder, and a mechanism for selectively applying... | 08/05/1986 |
| 4602547 | Electric guitar An improved electric guitar is disclosed, having strings closely spaced from the body and fingerboard of the guitar and magnetic pick-ups mounted under the pick-guard of the guitar, the cores of the magnetic pick-up protruding through the pick-guard into ... | 07/29/1986 |
| 4597930 | Method of manufacture of a felted fibrous product from a nonaqueous medium Hydrogen bonding between cellulosic fibriles can be improved in an air-laid process by injecting ammonia or organo-amine catalysts and steam into the cellulosic fibrile mass after such fibers have been reduced to fibrile form and prior to their dispersion... | 07/01/1986 |
| 4596484 | Lock for telescoping tubular support A lock for a tubular telescoping support such as tripod leg includes a clamping lever for locking inner and outer members against telescoping displacement and load bearing portions interposed between the two members such that the locking force applied by ... | 06/24/1986 |
| 4591708 | High-intensity opto-electronic sensor having low power consumption An opto-electronic end-of-tape sensor has a pulsed light source for producing high intensity, short duration light pulses and a photodetector controlling a clock driven digital counter. In a normal condition with tape blocking the light pulses, the counte... | 05/27/1986 |
| 4589341 | Method for explosive blast control using expanded foam An improved method of blast suppression involves forming an expanded foam barrier maintained in position by a barrier element which, in a preferred form, is inflated and maintained inflated by the foam used to form the foam barrier. Various barrier struct... | 05/20/1986 |
| 4586486 | Multilevel air distribution panel for air ventilation hood Improved air flow characteristics are obtained in a ventilating hood of the make-up type used over cooking surfaces by providing an air distribution panel comprising a panel frame to which is mounted a duct which serves to partition air flow between a fir... | 05/06/1986 |
| 4586574 | Cutter configuration for a gage-to-shoulder transition and face pattern Shortening of the bit life and premature failure of cutting elements on a rotating bit near or at the gage of the bit can be avoided by disposition of the cutting elements at or below a key level on the shoulder-to-gage transition. A first tooth is placed... | 05/06/1986 |
| 4585930 | Slotless magnetic card reader A slotless card reader for reading magnetically encoded cards is disclosed having an array of magnetic sensors defining a card plane, a magnetically permeable covering over said array and defining a card touch surface exposed for manually applying a magne... | 04/29/1986 |
| 4583569 | Wireline blowout preventer A ram-type blowout preventer having a removable seal insert contained in an insert cavity formed in the forward end of the ram body. Each seal insert includes an elastomeric body which forms an inner seal portion having a forward seal face and two outer s... | 04/22/1986 |
| 4580643 | Adjustable bearing section core barrel The longitudinal position of an inner barrel within a core barrel assembly can be adjusted and locked in the field without necessitating the disassembly of the cartridge cap assembly within the core barrel tool, and therefore without entailing loss of exp... | 04/08/1986 |
| 4580635 | Automatic drill pipe inside wiper A direct acting slug and wipe tool for use in drill pipe in drilling operations effects a cleaning operation by placing a rib inflated bladder in contact with the inside surface of a drill pipe in connection with a free floating pneumatic chamber. The inf... | 04/08/1986 |
| 4577730 | Mechanical lock An infinitely positionable mechanical lock having a housing and at least one bushing fixed to the housing, the bushing having an inclined spring abutment surface. A rod is axially slidable through the bushing relative to the housing. A coil spring is woun... | 03/25/1986 |
| 4576271 | Coin operated pull-down door and door spring mechanism for vending machine A coin operated pull down door mechanism for a vending machine is disclosed having a latch mounted to the door above a coin receiving and sorting mechanism, a coin seat disposed underneath the coin mechanism, a rod mounted for normally yielding to a cammi... | 03/18/1986 |
| 4573873 | Collective and cyclic in-mast pitch control system for a helicopter A compact, rugged, streamline, stiff, pitch control system is devised in a helicopter by concentrically nesting a cyclic pitch control tube and collective pitch control tube within the drive shaft and stationary mast of a helicopter rotor system. The coll... | 03/04/1986 |
| 4573539 | Hydraulically pulsed indexing system for sleeve-type core barrels A coring tool, which includes a flexible wire mesh in which the core is disposed, includes a mechanism for maintaining tension on the wire mesh sleeve which then seizes the core disposed within the sleeve, and which serves to retain the core and maintain ... | 03/04/1986 |
| 4572467 | Roller shade mounting bracket A mounting bracket for roller shade has two planar mounting portions joined at right angles to each other and a third portion perforated for receiving the end pin of a shade roller attached to one of the mounting portions in parallel relationship thereto ... | 02/25/1986 |
| 4571896 | Gutter assembly A gutter assembly is provided which comprises an elongated, preferably transversely flexible sheet which when in an installed position extends along a building roof adjacent an edge of it, while extending below the roof edge. A pipe is provided which has ... | 02/25/1986 |
| 4570987 | Swivel eyebolt The invention involves a swivel eyebolt of the type which relies on a threaded stud to anchor a bonnet and accompanying ring to a load allowing the bonnet 360° or rotation. Of special consequence is the structure which features a bushing applied around t... | 02/18/1986 |
| 4570319 | Universal joint dismantler A device for dismantling a universal joint. The device comprises a bridge member having a central hole formed in it and parallel spaced arms extended at one side. There is a U-shaped grasping member having a threaded hole formed in its top and opposing fi... | 02/18/1986 |
| 4570952 | Fluid collet chuck A chuck provided with a collapsible collet for holding one of a number of twist drills of different diameters is equipped with a holder for the collet, the holder being one for mounting in an appropriate power tool such as a drill press or lathe. There is... | 02/18/1986 |
| 4569529 | Game board with slides and cards A game. There is a game board having openings on its surface and headings, each indicating an occurrence in a competitive event. Indicia are marked on the board at each side of the openings and slides are received on the board. Each slide extends across a... | 02/11/1986 |
| 4568922 | Ice deposition detector employing impedance change of a vibratory body A vibrating body is connected as one element of a voltage divider. A detector circuit is connected to the measuring point of the voltage divider. If ice is deposited on the body, its impedance changes and the resulting voltage change at the voltage divide... | 02/04/1986 |
| 4567954 | Replaceable nozzles for insertion into a drilling bit formed by powder metallurgical techniques and a method for manufacturing the same Replaceable nozzles may be provided in a tungsten carbide drill bit manufactured by powder metallurgical infiltration techniques wherein at least one nozzle is threaded into a corresponding molded threaded bore in the bit. Despite the practical nonmachina... | 02/04/1986 |
| 4567461 | Electronic dart game scoreboard An electronic dart game scoring device includes individual game select switches for each of several games including cricket, team select switches, numerical entry keys for score entry and numerical score displays. The device is particularly adapted for sc... | 01/28/1986 |
| 4566545 | Coring device with an improved core sleeve and anti-gripping collar with a collective core catcher An improved coring device that incorporates a nonrotatable inner barrel disposed within the outer driving structure of the drill string which is coupled to the coring bit. A woven metal mesh sleeve is circumferentially mounted outside the inner barrel and... | 01/28/1986 |
| 4563936 | Weapon with next round select feed system An improvement is made in an externally driven gun having an ammunition feeder capable of providing at least two types of ammunition to the gun by incorporating a gear transmission into the driving mechanism coupled to the ammunition feeder to appropriate... | 01/14/1986 |
| 4564336 | Low drag, bearingless rotor head for helicopters A low drag, bearingless coupling is provided between a blade and hub of a helicopter rotor system by coupling the hub and blade together by means of a planar, elastic flexure or element which extends between the blade and the hub in a generally azimuthal ... | 01/14/1986 |
| 4562985 | Pan head The pan head consists of a single tube for supporting the tilt arm and the table in mutual rotatable relationship. A knob is attached to the rod for retaining the table and tilt arm against separation by withdrawal of the axis tube from its bore and also ... | 01/07/1986 |
| 4560364 | Fail-safe improvement for a flexible shaft coupling A fail-safe flexible coupling is provided for coupling shafts, typically in an aircraft, wherein the coupling includes a plug coupled to the first shaft and a socket coupled to the first shaft and a socket coupled to the second shaft. The plug is arranged... | 12/24/1985 |
| 4558749 | Anti-jamming core barrels An improved anti-jamming mechanism for use in a coring tool is devised by providing a rotary jar within the inner barrel of the coring tool. The inner barrel is connected to a bearing assembly into which a bearing shaft is axially and concentrically dispo... | 12/17/1985 |
| 4553613 | Hydraulic lift inner barrel in a drill string coring tool An automatically operable hydraulic lift inner barrel is devised to lift the inner tube of the core barrel on a drill string. An inner mandrel is axially disposed within the outer tube of the coring tool. An outer piston which is selectively locked to the... | 11/19/1985 |
