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| Number | Title | Issue Date |
| 4614585 | Frangible bonded disposable filtration unit with recoverable filter A disposable filtration unit having a breakaway reservoir to facilitate recovery of the filter membrane.... | 09/30/1986 |
| 4600384 | Swivel coupling for illuminated dental handpiece A swivel coupling for connection between a dental handpiece and a supply hose. The coupling includes a lamp in its handpiece connector portion, and an annular commutator in its hose connector portion. The lamp base is in sliding contact with the commutato... | 07/15/1986 |
| 4596696 | Disposable sterilizer mechanical air removal test pack A disposable sterilizer mechanical air removal test pack comprising an outer container in the form of a box having a definite shape and being formed of a relatively air and steam permeable material coated with a form-stabilizing layer of a relatively air ... | 06/24/1986 |
| 4588095 | Single-piece injection molded rack A single-piece, injection molded rack for holding test tubes or similar articles and a mold for producing the same. In a preferred three-tiered form, the intermediate tier is a lattice defined by the intersection of two superposed sets of parallel bars. T... | 05/13/1986 |
| 4588158 | Single-piece injection molded rack A single-piece, injection molded rack for holding test tubes or similar articles and a mold for producing the same. In a preferred three-tiered form, the intermediate tier is a lattice defined by the intersection of two superposed sets of parallel bars. T... | 05/13/1986 |
| 4575338 | Ball type bur gripping mechanism for dental handpiece A dental handpiece head having a bur-gripping mechanism which includes a spring-loaded ball carrier urged by the spring into operative engagement with a tapered ramp which in turn forces the several balls into clamping engagement with the shank of a denta... | 03/11/1986 |
| 4571188 | Occlusal matrix for light cured composites The disclosed invention is directed to a method of restoring a tooth with a light cured composite which comprises utilizing a light transparent impression or matrix which constitutes a negative reproduction of the occlusal surface of the tooth. The matrix... | 02/18/1986 |
| 4568284 | Dental handpiece A dental handpiece including motor portion and swivelable attachment portion. The motor portion includes an annular electrical commutator on its end facing the attachment. The attachment includes a lamp and associated electrical contacts for swivel contac... | 02/04/1986 |
| 4557376 | Self activating amalgam capsule A two-piece, two chamber self-activating capsule having mercury in one chamber and metal powder in the other. In use, the capsule is shaken and the resulting force due to the inertia of the mercury forces its way through a normally-closed valve into the m... | 12/10/1985 |
| 4556638 | Microorganism capable of degrading phenolics Mutant microorganism, Pseudomonas putida CB-173 degrading phenolics, and at a temperature as low as, e.g., about 1° to 4° C., at a faster rate than known Pseudomonas putida type strains, and process for treating wastewater containing phenolics using the... | 12/03/1985 |
| 4554336 | Urethane modified orthodontic adhesive A trifunctional methacrylate or acrylic terminated urethane resin of the following chemical structure: ##STR1## Where: R1 is --H, --CH3, --CH2 CH3, or --CH2 CH2 CH3, R2... | 11/19/1985 |
| 4553938 | Low torsional restraint instrument handpiece hose A hose having multiple conduits or conductors for transmitting drive air, water, chip air, light and/or electricity to a turbine-driven dental handpiece or other tool and for conveying exhaust air away from that handpiece, such hose being equipped with a ... | 11/19/1985 |
| 4541802 | Swivel hose coupling for dental handpiece or the like A swivel coupling for connecting a hose containing a drive air conduit, a secondary air conduit, a water conduit and an optical fiber conduit to a handpiece, such as a dental handpiece, having like conduits. The coupling permits unlimited swiveling, and e... | 09/17/1985 |
| 4536157 | Lever actuated chuck mechanism for dental handpiece In a dental handpiece, a drawback bur chuck actuable to open by a cam lever mounted atop the handpiece head and acting axially downward on the chuck against a spring which urges the chuck upward into clamping engagement with a bur shank when the cam lever... | 08/20/1985 |
| 4533321 | Braided elastomer orthodontic tensioning device An orthodontic tensioning thread comprising a plurality of elastomeric strands braided together, the combined effect of the braid providing significantly improved tensile strength, elasticity retention, tieability and knot retention as compared to prior a... | 08/06/1985 |
| 4504733 | Dry bath temperature control An electrically-heated dry bath wherein a metal block having receptacles for receiving test tubes or the like has resistor heaters fixed thereto and a thermistor temperature sensor therein. A control circuit is provided which connects and disconnects elec... | 03/12/1985 |
| 4483923 | Microbiological process for removing non-ionic surface active agents, detergents and the like from wastewater and microorganism capable of same A process for degrading and removing anionic and/or non-ionic surface active agents, detergents and the like from wastewater containing the same comprising treating wastewater containing the anionic and/or non-ionic surface active agents, detergents and l... | 11/20/1984 |
| 4481246 | Microscope slide with raised marking surface A microscope slide having a raised marking surface formed of pigmented resinous material, such as an epoxy resin, which dries to a matte finish which is absorptive and retentive of marking ink.... | 11/06/1984 |
| 4473664 | Colored inert material for separation of anion and cation resin components An inert bead form polymer, of intermediate settling velocity between cation and anion exchange resins, which is dyed a highly visible color.... | 09/25/1984 |
| 4473884 | Electronic medication dispensing system A portable medication dispensing unit has several compartments for storing pills or other forms of medicine. The dispensing unit is programmed with a medication schedule which causes visual and audio signals when it is time for the medication to be consum... | 09/25/1984 |
| 4456297 | Dental chair A dental chair has its backrest connected to the seat by a scissor linkage arrangement which effects the moving together of the contiguous portions of the backrest and seat concurrently with movement of the backrest from an upright to a reclined position.... | 06/26/1984 |
| 4447539 | Microorganism capable of degrading phenolics Mutant microorganism, Pseudomonas putida CB-173 degrading phenolics, and at a temperature as low as, e.g., about 1° to 4° C., at a faster rate than known Pseudomonas putida type strains, and process for treating wastewater containing phenolics using the... | 05/08/1984 |
| 4445789 | Thermometer or other instrument assembly The circular crystal of a temperature indicating instrument has a circular flange rotatable in a channel in the instruments' casing. Fingers on the casing have teeth which mesh with teeth on the flange. The fingers yieldably hold the crystal in place but ... | 05/01/1984 |
| 4444888 | Microorganism for decolorizing pulp and paper mill wastewater A process of decolorizing pulp and paper mill wastewater comprising treating wastewater effluent from a pulp or paper mill with a novel microbial strain of Pseudomonas aeruginosa under aerobic conditions; and the novel microorganism of the strain Pseudomo... | 04/24/1984 |
| 4435262 | Electrically neutral nonpermselective porous membrane A nonpermselective porous membrane sheet, which comprises a natural or synthetic fiber material substrate having coated thereon a mixture of a plastic binder material and a non-ion exchangeable filler material, said membrane being capable of transmitting ... | 03/06/1984 |
| 4421483 | Delivery system for dental instruments or the like A dental unit has dental instruments carried by individual nests, the nests being selectively movable from a storage position to a readiness position. Each nest is carried to the readiness position in a controlled manner such that the axis of the instrume... | 12/20/1983 |
| 4419091 | Metalized medical treatment electrode with insulated edge An ion treatment electrode has a porous polymer substrate with a conductive coating. A non-conductive solution impervious border is provided by applying to adjacent substrate, sufficient heat and pressure to melt the polymer and disrupt the conductive coa... | 12/06/1983 |
| 4415330 | Orthodontic bracket assembly An orthodontic bracket assembly is adapted for use with an arch wire in straightening a tooth having a crown long axis preferrably disposed at a particular angle with respect to an occlusal plane. The bracket assembly includes a base for fixing the assemb... | 11/15/1983 |
| 4410493 | Indicator device for use in steam sterilization An indicator device which comprises a backing member, an indicator chemical, such as sebacic acid, which has the capability of wicking through a wick material, wicking means having one end of said wicking means in physical contact with said indicator chem... | 10/18/1983 |
| 4408247 | High voltage protection circuit for x-ray systems A circuit protects a high voltage supply for x-ray tubes from the damaging effects of a tube flashover or the like. The circuit monitors line current, and high voltage and reacts to an increase in line current occurring with a corresponding drop in high v... | 10/04/1983 |
| 4407958 | Slant culture tube rack Test tube rack for holding a plurality of test tubes in an upright position and further adapted for holding the test tubes at slant angles of 5° from horizontal and 20° from horizontal for the preparation and growth of agar slant tube cultures or liquid... | 10/04/1983 |
| 4397908 | Electrically neutral nonpermselective porous membrane A nonpermselective porous membrane sheet, which comprises a natural or synthetic fiber material substrate having coated thereon a mixture of a plastic binder material and a non-ion exchangeable filler material, said membrane being capable of transmitting ... | 08/09/1983 |
| 4394266 | Pressure filter adapter and containment vessel Disclosed is a pressure adapter and containment vessel for converting a vacuum filter unit to use as a pressure filter. The containment vessel includes an off center well in the bottom of the vessel for supporting the filter unit, the off center well also... | 07/19/1983 |
| 4391478 | Drawer seal Drawers for storage units such as dental cabinets are provided with a sealing system that eliminates the need for seal mounting partitions between vertically stacked drawers. Flexible seal members are attached to upper drawer handles, and these flexible s... | 07/05/1983 |
| 4388572 | Constant speed regulator for DC motors An electric motor is supplied a voltage from a control circuit. The control circuit is powered by an AC to DC rectifier having a shunt capacity. An increase in motor load will result in lower speed and an increase in current. This causes an increase in AC... | 06/14/1983 |
| 4380794 | Surgical lamp characterized by having an improved reflector A surgical lamp includes a thermoplastic reflector which reflects visible light but passes infrared radiation. The reflector is fabricated from molded polyetherimide plastic resin. A dichroic coating is vacuum deposit directly upon the front surface of th... | 04/19/1983 |
| 4378501 | Power supply for triode x-ray tubes A power supply provides high voltage for a grid controlled x-ray tube. In the supply an oscillator generates a high frequency signal which is amplified and transformed to kilovoltage. A voltage multiplier increases the kilovoltage to a potential suitable ... | 03/29/1983 |
| 4375966 | System for making direct oral impression tray A system and materials for making oral impression trays in situ is disclosed, including a transporter member, tray member, and spacer member. Materials are disclosed for use as mold materials for polymerization in situ against or in close proximity to liv... | 03/08/1983 |
| 4373699 | Fluid flow control valve for dental instruments A fluid flow control valve uses a solenoid to control flow wherein the fluid path extends axially through the core of the solenoid. Flow is variable over the range of 0 to maximum flow and varies linearly with the voltage applied to the solenoid coil.... | 02/15/1983 |
| 4371223 | Cabinet door hinge Cabinet doors are supported by a hinge system that allows the doors to swing into an open space below the cabinet as they are opened. The hinge also reduces the room that must be provided in front of the cabinet to open the door. The door is mounted on hi... | 02/01/1983 |
