Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 4394781 | Swimsuit A swimsuit consisting of swim trunks and also, if need be, a corresponding bra, which is improved both esthelically, as well as in its method of making, is made of form inserts which are covered with fabric. The form inserts are in the form of U-shaped cl... | 07/26/1983 |
| 4394782 | Multi purpose head sweatband A head sweatband. The band has a cloth member for wrapping around a person's head. The cloth member has a peak at the top, two flaps at the bottom, and an end fastener to insure a comfortable fit as desired. Stitching on the cloth member reinforces it and... | 07/26/1983 |
| 4394783 | Body cushion A body cushion for use in minimizing discomfort and fatigue is disclosed. The body cushion includes a top cushion, a bottom cushion, a base cushion disposed therebetween and flexible connectors connecting the top and bottom cushions to the base cushion. T... | 07/26/1983 |
| 4394784 | Air bed with firmness control A bed or mattress structure having at least one pneumatic bladder confined within an outer perimeter of resilient but relatively firm edging material, with top and bottom covers, wherein air flow tubes are coupled into the penumatic bladder and are connec... | 07/26/1983 |
| 4394785 | Apparatus for cleaning soldering iron bits For cleaning hot soldering iron bits which are contaminated or soiled by tin oxides and soldering residues a flat felt or sponge has often been heretofore used. This cleaning technique is impractical, incomplete and frequently causes spatters of soldering... | 07/26/1983 |
| 4394786 | Apparatus for cleaning and scale dust removal from steel rod after mechanical descaling An apparatus for continuously removing fine scale dust comprising oxides of iron, such as FeO, Fe2 O3, and Fe3 O4 from mechanically descaled hot-rolled or heat-treated steel strand as preparation for wire drawin... | 07/26/1983 |
| 4394787 | Hydraulic door closer construction A hydraulic door closer is provided with a fluid seal for its output shaft, the seal comprising multiple O-rings disposed side-by-side in an elongated annular chamber.... | 07/26/1983 |
| 4394788 | Ratchet bearing for shutter slats and the like A ratchet bearing is provided for mounting the slats in a shutter frame which incorporates directly into the bearing, by virtue of a trunion pin having a ribbed surface which rotates within a bearing collar having inwardly directed detents, a multiple det... | 07/26/1983 |
| 4394789 | Toothed edging means for textile machinery Toothed edging apparatus for mounting on a rotatable support of a textile machine includes tooth segments each having a plurality of teeth elements arranged generally along an arc and a foot portion from which the teeth elements extend, the foot portion b... | 07/26/1983 |
| 4394790 | Fiber feeding apparatus with controlled air flow A chute feed having a chute formed in part by an upper perforated wall portion and a lower oscillating wall portion. Two compartments are formed adjacent the chute and are separated therefrom by the upper and lower wall portions, and a divider wall is dis... | 07/26/1983 |
| 4394791 | Closure clamp for food bags A closure clamp is disclosed for use with food bags, such as potato chip bags. It comprises a pair of clamp members in hinged construction and a torsion spring for holding the members together and applying a clamping force. Each clamp member includes a ja... | 07/26/1983 |
| 4394792 | Buckle for a safety belt In this buckle, a stop device which locks a locking device in the closed configuration of the buckle is formed by a body in a single piece which has guiding and maintaining portions adapted to receive return springs for a buckle operating knob and the loc... | 07/26/1983 |
| 4394793 | Roll for use in calenders or the like A calender roll wherein a stationary shaft is spacedly surrounded by a cylindrical shell and carries a row of bearing elements which are movable by pairs of cylinder and piston units and have convex surfaces formed with pairs of fluid-filled pockets adjac... | 07/26/1983 |
| 4394794 | Metal fastening system and method A method and apparatus is disclosed for connecting a plurality of metal sheets or the like without fasteners or welding. A die set is disclosed which is operable to cut ribbons of material from each sheet and to displace the ribbons to one side of the she... | 07/26/1983 |
| 4394795 | Connector insertion tool The disclosed invention is a tool which may be used to mount a connector onto a printed circuit board. The tool is composed of one or more units with each unit consisting of a housing, two rows of push pins, and a retaining bar. The tool is placed into th... | 07/26/1983 |
| 4394796 | Vegetation stem cutting apparatus Vegetation stem cutting apparatus comprises (a) elongated tongs which are interconnected at a pivot, (b) a table carried by one tong proximate the end thereof, (c) and a knife carried by the other tong to close toward the table when the tongs are pivoted to cut the... | 07/26/1983 |
| 4394797 | Cover for a rifle sight A cover for a rifle sight including a substantially hollow elongated body open at the bottom along a pair of first and second parallely disposed side portions, each side portion having a lowermost wall portion arcuately formed transversely of the elongate... | 07/26/1983 |
| 4394798 | Wheel alignment measuring apparatus A wheel alignment measuring apparatus of the invention has angle measuring instruments joined up with the input of an electronic signal processing unit. A first and a second angle measuring instrument (1, 2) are placed on a nearside and on an offside fron... | 07/26/1983 |
| 4394799 | Conduit bending plane indicator A conduit bending plane indicator comprising a base, a clamp for affixing the indicator to conduit to be bent, bubble level indicators to provide an indication that a bend in the conduit is coplanar with reference planes, and an angle indicator to provide... | 07/26/1983 |
| 4394800 | Guide clamp A guide clamp is disclosed which includes a clamping jaw at one end of a guide bar. An opposing shifting jaw is slidably carried on the guide bar to permit a workpiece to be embraced by the jaws. A pull rod associated with and parallel to the guide bar is... | 07/26/1983 |
| 4394801 | Multifunction, multipurpose construction tool A multifunction, multipurpose construction tool comprised generally of two operating arms pivotally connected via their terminal ends, preferably their rounded terminal ends, one to the other, an angle indicator being provided at the pivotal connection, o... | 07/26/1983 |
| 4394802 | Counter-convection vapor control system A method and apparatus for vapor conservation and control for use with vapor phase soldering, degreasing, or similar systems having an open tank containing the vapor into which work is introduced and removed. The present invention comprises apparatus asso... | 07/26/1983 |
| 4394803 | Elasticized overlay The elasticized overlay is particularly adaptable for use in an athletic type shoe which includes a tongue and a modified blucher construction. The modified blucher is fabricated without eyelets and receives thereover the elasticized overlay. An elasticiz... | 07/26/1983 |
| 4394804 | Rotor driven buoyant toy An inverted generally saucer-shaped buoyant toy, containing a battery powered motor, driving a paddle wheel-type rotor, generates movement of the toy with respect to the body of water in which it floats.... | 07/26/1983 |
| 4394805 | Escapable-window-security-guard system An escapable guard system includes means for securance of a grill having at each side thereof to be attached to a window frame or the like a channel with legs outturned; for co-acting with channels of this type a self-protective fastening system is provid... | 07/26/1983 |
| 4394806 | Multiple pane insulating structure having means for removing moisture between facing surfaces thereof An appliance comprising a unitary, atmospheric pressure, equilization chamber and drying chamber in the form of a sealed, flexible walled container with open cell elastomeric material providing communication between the interior of the chamber and the zon... | 07/26/1983 |
| 4394807 | Sheet metal structural shape A one-piece rollformed sheet metal structural shape for use in building construction, the shape being a generally triangular closed shape having mounting flanges extending outwardly at the bottom of the triangular shape and stiffening flanges extending ou... | 07/26/1983 |
| 4394808 | Fastener for attaching panel to stud The fastener comprises the combination of a gang nail plate and a clip. The plate is driven into the gypsum board panel to attach itself thereto. The clip connects with the plate and extends beyond its side edge. A screw or nail is driven through an apert... | 07/26/1983 |
| 4394809 | Coreless hung panel assembly A coreless, fireproof, hung panel assembly which includes a metallic sheet panel member having first and second major sides, stiffened by a plurality of metallic rib members on the second side. A plurality of metallic support members on a wall cooperate w... | 07/26/1983 |
| 4394810 | Chain link repair device The invention comprises a combination vise and breaker pin for facilitating repair of metal drive chains. The vise serves to pull the links of a chain together so that tension is maintained throughout the chain while links between vise jaws become loose a... | 07/26/1983 |
| 4394811 | Fuel control for gas turbine with continuous pilot flame An improved fuel control for a gas turbine engine having a continuous pilot flame and a fuel distribution system including a pump drawing fuel from a source and supplying a line to the main fuel nozzle of the engine, the improvement being a control loop b... | 07/26/1983 |
| 4394812 | Supercharged internal combustion engine for motor vehicles A supercharged internal combustion engine of the type having an exhaust gas turbine driven supercharging blower, exhaust gas bypass for regulating the exhaust gas turbine by diverting exhaust gases around the turbine, and a blow-off valve control charging... | 07/26/1983 |
| 4394813 | Exhaust gas heat recovery system in internal combustion engine An exhaust gas heat recovery system wherein: the system comprises an exhaust gas economizer having of heat transfer sections including a preheating section, an evaporating section and a superheating section, a feed water heater, a steam separation drum, a low ... | 07/26/1983 |
| 4394814 | Energy generation system An energy generation system includes a motive fluid which is alternately heated and cooled to drive a heat engine. An inexpensively built and operated system heats the motive fluid with solar radiation and cools it with atmospheric or wind cooling. Low co... | 07/26/1983 |
| 4394815 | Process for generating electric power by means of turbogenerators using high pressure vapor A hydraulic turbo-generator driven by a water current is used for producing electric power; the water is driven by a high output rotary pump (3) and supplied to the turbine (5) by means of a cylindrical conduit (4). The high pressure vapor is produced in ... | 07/26/1983 |
| 4394816 | Heat pump system A heat pump system comprising a compressor, two heat exchangers, and an expansion device. The expansion device defines two, spaced apart flow passages. A first piston is located in a first flow passage for metering refrigerant flow therethrough at a first... | 07/26/1983 |
| 4394817 | Apparatus for making and maintaining an ice surface A plurality of flexible plastic strips made up of elongated extruded modules with each module including a plurality of parallel tubular sections spaced apart by continuous webs with each strip being laid out on an area on which ice is to be made. The tubu... | 07/26/1983 |
| 4394818 | Transport refrigeration unit with removable power pack frame A transport refrigeration unit for mounting on the front face of a trailer 1 or the like is provided with an exterior section 2 construction and arrangement in which a relatively low center of gravity is obtained by providing a frame means 25 in the lower... | 07/26/1983 |
| 4394819 | Vibration isolation and pressure compensation apparatus for sensitive instrumentation A system for attenuating the inherent vibration associated with a mechanical refrigeration unit employed to cryogenically cool sensitive instruments used in measuring chemical constituents of the atmosphere. A modular system including an instrument housin... | 07/26/1983 |
| 4394820 | Double action barrel lock A lock of the type having an elongated housing open at the rear end with internal operating mechanism to release locking means, in which the mechanism comprises a collar which is spring biased forwardly and a locking stem mounted in the collar and spring ... | 07/26/1983 |
