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 |
| 7255320 | Mold for a plastic filter A mold, for molding a cylindrical filter having a narrow-pitched mesh structure through resin injection molding, has a cavity divided into sections radially freely attachable/detachable. The sections of the cavity being formed as stacked assemblies bodies each havin... | 08/14/2007 |
| 7066081 | Device for making cheese and corresponding production method The invention concerns a device for making soft cheese or fresh paste cheese comprising at least a first set of perforated cheese-moulds and at least a second set of perforated cheese-moulds arranged in a chamber. The invention is characterized in that said first an... | 06/27/2006 |
| 5788874 | Leak resistant hinge for use in concrete structure fabrication A leak resistant hinge is provided for pivotally connecting adjacent concrete form sections to permit angular adjustment and movement of the form sections. The hinge includes first and second L-shaped hinge brackets which pivot about a pivot member to whi... | 08/04/1998 |
| 5709768 | Apparatus with adjustable circumference made up of a plurality of interconnected shoes Apparatus including a frame, preferably circular in geometry and having a cental axis. At spaced apart locations about the circumference of the frame there are provided a plurality of links, each of which is pivotally mounted on a the frame and each of wh... | 01/20/1998 |
| 5308437 | Band member forming apparatus A band member forming apparatus including a rotary drum body having a rotary shaft, a drum driving device for rotating the rotary drum body about the rotary shaft, a plurality of moving members arranged in a peripheral direction of the rotary drum body, a... | 05/03/1994 |
| 5029803 | Device for adapting a formwork element to given radii of a circular formwork The present invention provides for a device for adapting a formwork element, including a formwork lining and at least two formwork beams, to a given curvature of circular framework. A device includes a web engaging a space between two formwork beams and a... | 07/09/1991 |
| 4930937 | Box culvert traveler for use with concrete forming systems A traveling culvert/tunnel forming structure including upright waler assemblies positioned in transversely spaced relation on each side of said forming structure, the waler assemblies being adapted to receive forms on outside surfaces thereof. Horizontall... | 06/05/1990 |
| 4679762 | Form set-up An apparatus for forming a multisided upright concrete wall with inner and outer form set-ups including an arrangement for stripping said inner form set-up which has a multisided form wall from the cast concrete entirely which comprises at least one wedge... | 07/14/1987 |
| 4627810 | Collapsible core An injection mold utilizes a collapsible core portion which includes a core portion and a mold cavity portion. A core base is provided as part of the core portion. A first mold ring is positioned about the core base and longitudinally movable to define a ... | 12/09/1986 |
| 4609339 | Matrix mold for making stackable containers The invention relates to a matrix mold, in which at least one mold cavity is bounded by the head of an ejector at the lower opening of a cup, from which in the substantially truncated conical wall of this cup, widening upward, facing the interior, by at l... | 09/02/1986 |
| 4389180 | Mandrel with identical expanding segments A mandrel for forming a bell shape and an annular groove in the bell in one end of a plastic pipe which comprises a shaped profile and a plurality of identically formed segments which are movable relative to the profile. The segments are radially urged in... | 06/21/1983 |
| 4269258 | Core for molds for electrically melting metals for casting hollow ingots Mold core for electrically melting metals for casting hollow ingots wherein the core wall is divided lengthwise on its periphery and is designed to be taken apart. The wall is preferably made of at least two partial cylinders between which stave-like keys... | 05/26/1981 |
| 4258897 | Structure for forming concrete troughs in the ground A method and structure in which a Y- or V-shaped trench is dug in the ground for spatially receiving a smaller, complentarily shaped form that is supported in the trench by re-enforcing rods or the like that remain in the set-up concrete when the form is ... | 03/31/1981 |
| 4177032 | Molding core for the manufacture of hollow bodies consisting of fiber-reinforced synthetic resin A molding core, consisting of a plurality of flexible metal plates, for the manufacture of cylindrical hollow bodies or wound sections of fiber-reinforced synthetic resin. The metal plates are fixed to support members which in turn are connected to frames... | 12/04/1979 |
| 4127254 | Concrete building construction forms In forming a concrete structure, reusable modular forms are joined together to provide one or a number of tunnel-like sections. The forms include inside form units which can be connected together and aligned so that they provide a continuous planar surfac... | 11/28/1978 |
| 4080140 | Apparatus for forming bells on plastic tubes Apparatus for forming internally grooved bells on plastic tubes, having a mandrel comprising coaxial front and rear mandrel sections spaced apart to form a gap, angularly spaced supporting pins joining internal flanges on the elements across the gap, two ... | 03/21/1978 |
| 4032282 | Apparatus for forming bells on plastic tubes Apparatus for forming internally grooved bells on plastic tubes having a mandrel comprising coaxial front and rear mandrel elements spaced apart to form a gap, angularly spaced supporting pins joining internal flanges on the elements across the gap, two s... | 06/28/1977 |
| 3990673 | Apparatus for casting Apparatus for casting concrete septic tanks, burial vaults and the like includes an inner form and an outer form. The inner form includes apparatus for positively locking the cover plate to the inner form as the walls thereof are expanded. The inner form,... | 11/09/1976 |
| 3934808 | Adjustably suspended mold sections for forming a concrete room A molding device comprising: an outer mold having a drive mechanism for moving side panels and end panels back and forth in the direction towards the center of the outer mold at the same time and a fastening means for automatically fastening the side pane... | 01/27/1976 |
