Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 4690654 | Toy vehicle carrying case and launcher A toy vehicle carrying case and launcher having a clip for carrying on the belt of the user. The clip retracts as the case is placed on a surface for launching. The vehicle and launcher are completely enclosed in the carrying mode. A ready button releases... | 09/01/1987 |
| 4682702 | Tamper indicating closure A dispensing closure having a base cap with a top containing a dispensing orifice and a skirt adapted to be attached to a container so that dispensing of the container contents can take place only through the cap orifice. The orifice is sealed with an int... | 07/28/1987 |
| 4682700 | Safety closure and container package A safety closure and container package including an internally threaded closure cap and a container having a threaded neck. A retention flange is located on the container neck below the threads, having a gradually sloping upper surface and an abrupt, inwa... | 07/28/1987 |
| 4681509 | Variable inlet fan assembly A variable inlet vane assembly for use with force draft and induction draft systems having a fan. The vane assembly comprises a mounting base and a hub supported in spaced relationship by a plurality of supports. The inlet vanes are pivotally supported be... | 07/21/1987 |
| 4680428 | Electric fence insulator cap An electric fence insulator cap for mounting on U-posts of varying flange tip to flange tip widths and varying bight to flange depth in either of two 180° oriented positions. The electric fence wire is held in a pair of slotted lugs for simple installati... | 07/14/1987 |
| 4666068 | Two piece dispensing closure A two piece dispensing closure for a container in which one piece is a cap having means for attachment to the container such as internal threads which engage external threads on the container and a flat top having a dispensing orifice. The second piece of... | 05/19/1987 |
| 4662256 | Die set An improved die set for vertical stamping presses producing stamping. Knockout pins are replaceable from the upper end of the reciprocating shoe by movement of a bushing without requiring removal of the die and die retaining components which would require... | 05/05/1987 |
| 4660752 | Vacuum feeder for continuous web A vacuum feed mechanism for precision feeding a printed continuous double-backed corrugated paper board web to a platen die cutter for producing printed foldable box blanks. The feeder has several adjacent horizontal endless belts, with each belt having s... | 04/28/1987 |
| 4660746 | Mouthwash dispenser A liquid dispensing closure cap for application to a flexible wall container. The cap has a delivery tube extending downwardly into the container and upwardly in a pedestal above the cap top. A dosage cap is seated on the top of the cap. A closure lid is ... | 04/28/1987 |
| 4653798 | Sun visor mirror A sun visor and vanity mirror assembly. A sliding door covers the mirror for protection should the mirror be broken, and when the mirror is in use, the door is slid below the visor outer cover obviating the potential danger of a hinge-type door.... | 03/31/1987 |
| 4653662 | Waste container with movable hatch lids An elongate waste storage container having two top hatches serving as inlets for loading the container. The hatches are sealed by movable hatch lids. A trolley running on a track on the top of the container is arranged to pick up one of the lids at a time... | 03/31/1987 |
| 4653368 | Tube cutoff die set A method and apparatus for severing successive lengths of tubing in a die set in which the movement of an upper die shoe is translated by mechanism to clamp the tubing on a lower die shoe, move a notching blade across the clamped tubing to slot the tubing... | 03/31/1987 |
| 4651885 | Tamper indicating dispensing closure (for edible oils) A tamper indicating dispensing closure having a body member forming a dispensing passage at one end and an opening to receive the neck of a container at the other end in which the dispensing passage and opening in the neck are in communication with each o... | 03/24/1987 |
| 4648519 | Vented closure A container or bottle closure in the form of a one-piece cap. The cap is formed with a flat top and a depending skirt having means for attachment to the container neck such as internal threads which mate with complementary threads on the container. An ann... | 03/10/1987 |
| 4643418 | Exercise treadmill A safety interlock for an electric exercise treadmill having an electric powered tilt motor for varying the inclination of the exercise surface. The interlock protects the area below the treadmill frame when the treadmill is being used in an inclined posi... | 02/17/1987 |
| 4643321 | Tamper indicating band for threaded cap A tamper indicating band which can be fitted over the scuff band of a conventional screw cap. The band has a larger diameter upper ring with a retaining bead which snaps over the scuff band and a smaller diameter lower ring which has a bead which snaps ov... | 02/17/1987 |
| 4639387 | Fibrous armor material An improved armor material formed of resin bonded fiberous material. The fiberous material comprises at least one monofilament resin coated, wound and consolidated. Also disclosed is a method for making the armor.... | 01/27/1987 |
| 4630743 | Tamper indicating child resistant closure A tamper indicating and child resistant package including a screw-type closure for use with a container having a threaded neck. The container is equipped with lock members along the threaded neck and a loading ramp carried on the threaded portion of the n... | 12/23/1986 |
| 4629870 | Tamper proof odometer A tamper resistant and tamper-proving odometer construction. Driving of the odometer mechanism in the reverse direction to lower the count is prevented by a one-way locking mechanism associated with the lowest order digit wheel. A marking mechanism is ass... | 12/16/1986 |
| 4628780 | Air ejector system An air ejector system for use in a horizontal or vertical stamping press which reciprocates the moving member of a die set to produce an annular product. Air is introduced through a central punch for shedding and ejecting a slug. Air is also introduced th... | 12/16/1986 |
| 4625897 | Metering dispensers A metering dispenser assembly comprises a squeeze bottle 1 with a metering cup 3 fitting in the neck of the bottle and carrying a dip tube 9 which extends to the bottom of the bottle. The dip tube, or at least a pillar 7 into which it fits, terminates at ... | 12/02/1986 |
| 4623756 | Fence post insulating cap An electric fence insulator cap for mounting on various weight and flange configuration T-posts in any of four 90° spaced positions. The electric fence wire is held in a pair of spaced slotted lugs for simple installation. The cap top is generally sloped... | 11/18/1986 |
| 4618268 | Method and apparatus for sensing average temperature A device and method for detecting average temperature, particularly adapted for determining the average liquid temperature in an underground horizontally disposed cylindrical tank. The sensing element, in the form of a wire of known temperature versus ele... | 10/21/1986 |
| 4613063 | Dispensing package A three piece safety dispensing package for granular or pellet material. A cap is rotatably attached to a container. The cap has dispensing windows that are aligned with openings in the container to a desired degree to control the dispensing rate. The cap... | 09/23/1986 |
| 4605224 | Exercise apparatus Exercise equipment is disclosed which comprises a spherical sector-shaped member with an upright column erected therein, a base plate mounted on the upper end of said column, an arm with the base end rotatably carried on said column and the free end proje... | 08/12/1986 |
| 4603785 | Tamper indicating closure A tamper indicating closure including a transparent outer cap and an inner insert disc with an integral depending plug seal which relies on the relative movement of the outer cap and the inner disc during opening movement to indicate tampering of the cont... | 08/05/1986 |
| 4599488 | Universal nail-on insulator A molded one-piece electric fence post insulator which can be installed on a flat or round wood post with a single nail. A forward planar post engaging panel has a vertically extending wing at each lateral side. The wings extend forwardly of the panel pla... | 07/08/1986 |
| 4598736 | Solenoid operated valve with balancing means A balanced solenoid operated valve having a balanced solenoid plunger, and the valve can be made as a three-way valve or a four-way valve. In the four-way valve embodiment the solenoid plunger balancing means also functions as a sliding spool valve for co... | 07/08/1986 |
| 4592531 | Linear switch positioning device This invention relates to linear positioning means and more particularly to a movable carriage and rod assembly for positioning switch elements such as limit switches relative to their actuating means. The primary purpose of this invention is to provide a... | 06/03/1986 |
| 4587991 | Valve with uniplanar flow A reversing fluid flow control valve with a valve base having an elongated longitudinal cavity open along the top side thereof. Said valve base having inlet, cylinder and exhaust ports connected to inlet cylinder and exhaust passages. A valve spool body r... | 05/13/1986 |
| 4587280 | Tank tread pad and composition for making A tank tread pad and composition for making. A tank tread pad is formed from a polymeric material which is formed by an inter penetrating polymer network comprising a first urethane component and a second resinous component which cures under different con... | 05/06/1986 |
| 4577770 | Tamper indicating screw cap A threaded one piece closure having a tamper indicating ring attached to the lower end of the cap skirt by shear webs which fracture upon the initial opening of the closure leaving the detached ring on the container indicating the initial opening or tampe... | 03/25/1986 |
| 4548238 | Directional control valve with straight through flow A reversing, four-way, two position fluid directional control valve having a valve body with an enclosed chamber therein and at least two oppositely disposed sides. Two outlet ports are formed through one of the two sides, and they communicate with the ch... | 10/22/1985 |
| 4526202 | Valve with straight through flow A reversing, fluid directional control valve having a valve body with an enclosed exhaust chamber therein and at least two oppositely disposed sides. One, or two outlet ports are formed through one of the two sides, and they communicate with the chamber, ... | 07/02/1985 |
| 4098649 | Conversion of organic waste material Apparatus and the method of converting organic material such as that separated from municipal and industrial waste into useful products by using a form of an extruder in a continuous destructive distillation process and in which the material being process... | 07/04/1978 |
| 4010949 | Plugs for pocket billiard tables Pocket plug assemblies for converting a pocket billiard table to a carom billiard table and to a snooker pool table in which the plug has a cushion rail portion supported from the permanent rail portion of the table in a manner positioning the ball engagi... | 03/08/1977 |
| 3968814 | Hydraulic booster brake pressure regulator A hydraulic booster brake mechanism for use in an open center power steering system of a motor vehicle in which the booster brake mechanism employs a pressure regulating mechanism which limits the maximum pressure at which the booster operates to protect ... | 07/13/1976 |
| 3965222 | Carburetion system A carburetion system wherein the choke opening is modulated in accordance with the ambient temperatures. A choke modulator mounted in the carburetion system's air cleaner employs a temperature sensitive provision to vary air flow to the choke thermostat a... | 06/22/1976 |
| 3964707 | Underground conduit holder An underground conduit holder including a pair of identical conduit holding frames held together in spaced relationship by a pair of identical clamping structures. The clamping structures include latch portions which flex to facilitate easy attachment and... | 06/22/1976 |
| 3965223 | Charge forming device A carburetor has a vacuum operated diaphragm type choke control device that acts in connection with a thermostatic control to permit the carburetor choke valve to be closed during starting but provides a controlled gradual opening of the choke valve after... | 06/22/1976 |
