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| Number | Title | Issue Date |
| 4704052 | Foundation and method for improving the resistance to sliding of civil engineering structures A foundation for a retaining wall-type of structure acted upon by a principal force tending to slide same in a predetermined direction is anchored by a plurality of slide resisting walls. The slide resisting walls extend parallel to the predetermined dire... | 11/03/1987 |
| 4641427 | Method and apparatus for applying two piece connector blocks to multiconductor cable A method and apparatus is provided for attaching a plurality of two-piece connectors of varying configuration to a specified length of multi-conductor cable at precise locations along the length of the cable and in any sequence of connector attachment. A ... | 02/10/1987 |
| 4583936 | Frequency modulated burner system A furnace (A) defines a combustion chamber (10) in which a pair of burners (B) are mounted for oxidizing the fuel to heat the combustion chamber. An air blower (12) supplies air to the burners at a rate controlled by a rate control valve (18). A frequency... | 04/22/1986 |
| 4578031 | Dimensionally stable movable furnace hearth An upper furnace portion (A) includes side walls (12, 14) extending along its lower edge. A dimensionally stable furnace hearth (B) is movably mounted adjacent the furnace lower edge and is displaced a small distance from the side walls, such that the hea... | 03/25/1986 |
| 4548052 | Apparatus for cooling a strip prior to a minispangle operation A steel strip (10) is conveyed through a galvanizing bath (20) of molten zinc, a zinc coating weight control device (12), and a minispangle box assembly (16). The steel strip emerges from the zinc coating weight control device (12) with a non-uniform temp... | 10/22/1985 |
| 4547150 | Control system for oxygen enriched air burner A combustion controller (C) controls the relative rates at which a combustion component source (B) supplies fuel, air, and oxygen to nozzles (A). A fuel source (30) supplies fuel to the burners at a rate (50 in FIG. 2) which is appropriate to produce a de... | 10/15/1985 |
| 4542947 | Locking assembly for fluorescent lamps A securing assembly for an axially rotatable body or workpiece such as a fluorescent lamp provided with a pair of pins which extend axially outward from at least one end thereof and into a socket in a lampholder. The securing assembly includes a generally... | 09/24/1985 |
| 4527506 | Apparatus for cooling a strip prior to a minispangle operation A steel strip (10) is conveyed through a galvanizing bath (20) of molten zinc, a zinc coating weight control device (12), and a minispangle box assembly (16). The steel strip emerges from the zinc coating weight control device (12) with a non-uniform temp... | 07/09/1985 |
| 4503293 | Interlocking plug and receptacle mechanism with actuating means An interlocking plug and receptacle mechanism which involves actuating means for operating an electrical device which is environmentally isolated from the atmosphere in an enclosure. The electrical device, specifically a circuit breaker, includes a toggle... | 03/05/1985 |
| 4501553 | Floating equipment and floating-type heat treating furnace for striplike works An improved floatation-type pressure pad is described as having lines of jet nozzles which are so arranged at the opposing ends of the pad that streams or jets of gas, emitting from the nozzles and striking a strip of material passing nearby, tend to stre... | 02/26/1985 |
| 4499668 | Automatic minimum differential pressure control for dryer cylinders A supply of steam is fed to a drying cylinder (10) from a steam line (20) through a steam pressure control valve (22). Condensate and steam are removed from the drying cylinder to a separator (32). The pressure of the removed steam is controlled by a stea... | 02/19/1985 |
| 4493040 | Apparatus and method of phase control for resistance welding and other resistive-inductive loads A computer-controlled welding apparatus includes a phase-controlled resistance welding circuit (A) for selectively conducting pulses of a welding current to a workpiece (B) and a control circuit (C) for controlling the conduction of the welding current. T... | 01/08/1985 |
| 4486133 | Retainer for mechanical fastener member A nut retainer for use with a structural member having a nut entrance channel defined between a pair of opposed shoulders or flanges of some predetermined thickness and a nut receiving channel disposed beneath the shoulders. The nut retainer has a general... | 12/04/1984 |
| 4470649 | Low profile integrated circuit electrical socket assembly The low profile integrated circuit electrical socket assembly includes a drawn metallic socket (A) into which a leaf spring insert (B) is press fit. The socket includes a hollow upper body portion (10), a hollow lower body portion (12), a transition porti... | 09/11/1984 |
| 4455136 | Floating equipment and floating-type heat treating furnace for striplike works An improved floatation-type pressure pad is described as having lines of jet nozzles which are so arranged at the opposing ends of the pad that streams or jets of gas, emitting from the nozzles and striking a strip of material passing nearby, tend to stre... | 06/19/1984 |
| 4440213 | Recuperator with floating interior housing A metal recuperator is described as having an exterior casing with a replaceable inner housing which forms with the casing a pair of separated fluid passageways through which two fluids, at different temperatures, are circulated into heat exchanging relat... | 04/03/1984 |
| 4439212 | Process and device for gaseous atmosphere separation in plants for heat treatment under atomosphere A process is described for the separation of gaseous atmospheres in heat treatment plants, under atmosphere, especially in dip metal coating plants; this process being characterized by the fact that the gaseous atmosphere separation is performed near the ... | 03/27/1984 |
| 4429938 | Locking device for interfitting members A locking device for interfitting connector members, particularly an electrical plug and receptacle/connector, for automatically locking the members in an axially interconnected relationship. The members include interfitting cylindrical male and female po... | 02/07/1984 |
| 4429201 | Electrical switch having a reciprocating wiping actuator A switch including a housing in which a pair of electrical contacts are positioned for movement between open and closed positions. An actuator movably mounted in the housing moves between contacts open and contacts closed positions. The actuator includes ... | 01/31/1984 |
| 4427220 | Flexible joint for conduit A flexible joint for conduit includes inner and outer conduit parts having a common longitudinal axis. The inner conduit part includes a spherically curved end portion received in the outer conduit part and having inner and outer surfaces. Inner and outer... | 01/24/1984 |
| 4422016 | Constant energy transfer rate strobe source A strobe light power source transfers a constant amount of energy to a capacitor bank for each flash of a strobe lamp by maintaining a constant energy transfer rate between a power source and the capacitor bank and allowing the capacitor bank to charge fo... | 12/20/1983 |
| 4419560 | Welding control with automatic percent heat adjustment This welding control method and apparatus automatically adjusts the percent heat of a welding machine in response to the duration of the preceding welds. The duration of each weld is measured by counting the line cycles. The line cycle count is compared w... | 12/06/1983 |
| 4417871 | Method and apparatus for cooling skid pipes in continuous slab reheating furnace An apparatus is disclosed for cooling the skid pipes of a continuous slab reheating furnace by the circulation of pressurized hot water, not cold water or steam, through the skid pipes where the hot water is heated to even higher temperatures. The heated ... | 11/29/1983 |
| 4414440 | Waterproof electrical switch with safety interlock A water-tight housing (80) has a circuit breaker (71) mounted in its interior. A plug receiving structure (70) selectively receives an electrical plug (75). A locking pin (12) is slidably mounted through the housing to engage the electrical plug and under... | 11/08/1983 |
| 4408816 | Terminator connector for shielded cables A terminator connector for shielded cables includes a cylindrical base portion clampable against a cable shield, and a plurality of circumferentially-spaced spring fingers extending outwardly from one edge of the base portion for engaging a metal housing ... | 10/11/1983 |
| 4399984 | Automatic installation for the heat treatment of workpieces in fluidized beds Workpieces are heat treated in a fluidized bed contained within a vessel having a central well surrounded by helical ramps along which the workpieces move into and out of the bed. A perforated platform connects the ramp and movement of the workpieces alon... | 08/23/1983 |
| 4398700 | Annealing furnace with an improved cooling section The cooling section of an annealing furnace is described as having the capabilities of maintaining, increasing, or decreasing the temperature of a strip of metal as it passes through the section. Moreover, special means are provided for forming around the... | 08/16/1983 |
| 4397600 | Device for feeding material to a furnace A device is described for feeding bars and tubes into a treatment furnace. The device comprises a rotary drum positioned in front of a long horizontal opening provided in the sidewall of the furnace for receiving a bar and introducing it into the furnace ... | 08/09/1983 |
| 4394982 | Liner plate for grinding mills A liner plate for grinding mills includes a short integral lifter bar section having a bolt receiving hole therethrough for securing the plate to the shell of a grinding mill. A replaceable lifter bar section fits onto the liner plate in alignment with th... | 07/26/1983 |
| 4384546 | Device for cleaning a filter used in conjunction with a galvanizing process A device is described for filtering zinc powder from an airstream which is exhausted from a galvanizing process. The device comprises an enclosed chamber to which the airstream is circulated for removal of zinc powder. The chamber has a horizontally dispo... | 05/24/1983 |
| 4311422 | Screw retainer A screw retainer comprises a substantially flat clip having a central resilient tang engaged by a screw for preventing withdrawal of the screw from an opening. Engagement of the screw with the tang also causes a reversely curved porton of the tang to enga... | 01/19/1982 |
| 4214349 | Tie wrap A tie wrap includes a toothed strap extending from a head having a strap receiving passage with a pawl for cooperating with the strap teeth to prevent withdrawal of the strap from the passage when the strap is inserted through the passage in one direction... | 07/29/1980 |
| 4211370 | Lining for grinding mills A lining for grinding mills is formed by generally rectangular plates having integral raised lifter bars extending across diagonally opposite corners, and bolt receiving holes extend through the plates and lifter bars for securing the plates within a grin... | 07/08/1980 |
| 4207563 | Gas charged accumulator with failure indicator A gas charged accumulator includes a gas chamber and a hydraulic reservoir on opposite sides of a movable member. A fill passage for pressurizing the gas chamber includes a movable operating device for operating an indicator when the accumulator is substa... | 06/10/1980 |
| 4207564 | Piston overtravel indicator A piston overtravel indicator for indicating overtravel of a piston from a rest position adjacent one end of a cylinder to working positions displaced from the rest position toward the other end of the cylinder. The indicator includes an elongated indicat... | 06/10/1980 |
| 4207565 | Piston overtravel indicator An overtravel indicator for a piston received in a cylinder having an end wall toward which the piston moves includes an elongated indicator rod slidably mounted through a dielectric bushing in the end wall. A conductive garter spring is compressed betwee... | 06/10/1980 |
| 4206455 | Piston overtravel indicator An overtravel indicator for a piston received in a cylinder having an end wall toward which the piston moves includes an elongated indicator rod slidably extending through the end wall. The rod has an armed position extending inwardly of the end wall and ... | 06/03/1980 |
| 4204555 | Exhaust valve assembly An exhaust valve assembly includes a housing having a plurality of ports and a flexible diaphragm movable between opposite positions for selectively connecting the ports. A central elongated stem on the diaphragm extends tightly through a hole in the hous... | 05/27/1980 |
| 4194522 | Air pressure regulator An air pressure regulator includes a housing having inlet and outlet ports extending along a common axis. A movable valve member and a piston are positioned in the housing on opposite sides of a housing flow passage. The movable valve member is adjacent t... | 03/25/1980 |
| 4191428 | Air brake system with pressure holding valve A vehicle air brake system includes spring set air released parking brakes to which air is supplied through a pressure holding valve which maintains the air chambers of the parking brakes at a predetermined pressure even though the air brake system may be... | 03/04/1980 |
