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...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 7429026 | Concrete block technology A mold, process of using the mold to form a block, and the resultant block are disclosed. The block may of course be connected to other blocks to form stuctures such as walls. The blocks and structures may have curved features for simulating a log structure. The mol... | 09/30/2008 |
| 7331776 | Food embossing stamper device An impression device for food items. More particularly, the present invention is a stamping device designed to create images upon a variety of foods for decoration and/or marketing purposes. The stamper device of the present invention has the general appearance of a... | 02/19/2008 |
| 7204470 | Textured masonry block mold & method A mold device and method for producing a rough texture on all or a portion of the outward exterior surfaces of masonry block units. The device of the present invention is a mold having one or more cavities, open at the top and the bottom, with a rigid support platfo... | 04/17/2007 |
| 7201866 | Concrete test cylinder mold cap A method and apparatus for molding a reproducible uniform concrete test cylinder. Concrete is poured into a concrete test cylinder mold. A cap having at least one excretion hole is placed on the top portion of the concrete test cylinder mold. The cap is pressed agai... | 04/10/2007 |
| 7198429 | Segmented concrete screed A segmented concrete screed for screeding concrete on a concrete casting bed includes a plurality of individual screed units each of which may be raised and lowered independently of the others such that screeding operations may selectively bypass obstructions in the... | 04/03/2007 |
| 7191999 | Variable height sideforms An improvement to concrete casting machines of the casting bed type in which the side forms are constructed and arranged to stay in an upright position at all times but may be raised and lowered. ... | 03/20/2007 |
| 6955014 | Insulated concrete cast panels with voids in billits A method for casting hollow core concrete panels includes the use of raft connectors to hold a plurality of spaced foam billets in place during the manufacture to create panel or plank with spaced foam-filled cores. The panels include billets that form longitudinal ... | 10/18/2005 |
| 6922955 | Pre-cast dock leveler pit A dock pit for a dock leveler mechanism comprises a pre-cast concrete body including integrally formed side, rear panel and front panels, all forming a continuous perimeter open therethrough to receive the load leveler mechanism. Each side panel has a top edge and t... | 08/02/2005 |
| 6821469 | Method of manufacturing a roller A method of manufacturing a roller includes: forming a hollow cylindrical body that includes a fully solidified outer peripheral surface and a semi-solidified interior, with an inner peripheral surface swelling inwardly; and pressing the swollen portion of the inner... | 11/23/2004 |
| 6328921 | De-molding method and apparatus for a golf ball A method and system for de-molding golf balls having a casted layer is disclosed herein. The invention includes exerting a first lateral force against a top mold half of a mold assembly and exerting a second lateral force against a bottom mold half of the... | 12/11/2001 |
| 5997792 | Apparatus and process for casting large concrete boxes A method of forming concrete integral box shaped modules provides dimensional accuracy and sustains closer tolerances thus permitting surfaces of adjacent modules to match. The method utilizes a standard fixed box frame with vertical walls that can be eas... | 12/07/1999 |
| 5755982 | Concrete casting system A mold system for casting five-sided, monolithic, seamless concrete products comprises an outside jacket, an inside mold core complete with base, and a movable pallet to aid stripping. The outside jacket preferably includes two L-shaped panel members arra... | 05/26/1998 |
| 5497974 | Geodesic igloo constructor A pair of molds or forms for constructing a geodesic igloo are described. One of the molds forms a hexagonal block of snow; the other, a pentagonal block. An icosahedron igloo with frequency 3 or 6 is constructed by shovelling snow into the molds, compact... | 03/12/1996 |
| 5338176 | Pie crust lifter The invention is a pie crust lifting tool and corresponding rolling board for lifting pie crusts from a rolling board and placing them in a pie plate in anticipation of baking. The lifting tool has a handle at one end and a circular shaped portion known a... | 08/16/1994 |
| 5069417 | Apparatus for producing a cured-in-place test sample of concrete An apparatus for providing a test sample of concrete from a large poured area of concrete includes a mold suitable for placement within the concrete form, said mold including a continuous sidewall and a bottom wall connected to the sidewall. An insert wit... | 12/03/1991 |
| 4815960 | Blowing mould adjustable in longitudinal direction A blowing mould has a mould with a terminal part which can be adjusted in axial direction relative to the mould by means of a threaded spindle and an adjustment nut. The terminal part is guided in a pressure sealed manner in the mould and is provided with... | 03/28/1989 |
| 4741197 | Ejection of superplastically formed part with minimum distortion A method of removing or ejecting a part from a first die after the part has been superplastically formed in a cavity of the die at an elevated temperature such that the part sticks to the surfaces of the die. The method includes the steps of forming a fla... | 05/03/1988 |
| 4715576 | Apparatus for forming a flexible mask The invention is a flexible mask for use in charging a flowable material into selected cells of a honeycomb structure and is of particular utility in charging a sealing material into the ends of selected cells of such a structure during fabrication of sol... | 12/29/1987 |
| 4699582 | Ice cream scoop An improved two component ice cream scoop made of plastic, includes a bowl portion and handle portion integrally connected, the handle portion further includes an ejecting lever which is biased by a tongue spring, wherein the head portion of the ejecting ... | 10/13/1987 |
| 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 |
| 4289293 | Combination bed concrete casting apparatus PCT No. PCT/US79/00707 Sec. 371 Date Sept. 7, 1979 Sec. 102(e) Date Sept. 7, 1979 PCT Filed Sept. 7, 1979 PCT Pub. No. WO80/00673 PCT Pub. Date Apr. 17, 1980 A combination bed concrete casting apparatus (20, 122 or 200) which allows either a single relati... | 09/15/1981 |
| 4252293 | Hydraulic mold release mechanism for precast concrete products This disclosure relates to a hydraulically operated mechanism which releases precast concrete products, such as precast septic tanks, burial vaults, steps, and like precast concrete products from the mold in which they are cast, the mold including a base,... | 02/24/1981 |
| 4004874 | Apparatus for production of cast concrete members Concrete structural members are cast in a metal mold form which comprises side members closed off by a horizontally extending resilient pallet. The side members have affixed thereto at their lower ends adjustable swivel arm actuating mechanisms adapted to... | 01/25/1977 |
| 3995357 | Integrally cast bearing, method and apparatus for making same The invention relates to a process for forming a part including a bore with a bearing integrally cast thereto, the thus formed part and apparatus for thus forming the part. The process includes hot machining a bore into a billet in a non-oxidizing atmosph... | 12/07/1976 |
| 3963209 | Ejector pin assembly for injection moulding tools In an ejector pin assembly for injection moulding tools the ejector pin plate is positively retracted and locked in its rear position by providing the tool with a rearwardly extending hollow housing, having an inner annular pocket, by slidably arranging i... | 06/15/1976 |
| 3940103 | Apparatus for injection molding a tamper-proof plastic cap This invention relates to a plastic closure or cap-type stopper of which the outer skirt has formed on its inner surface a plurality of ribs adapted to engage the top ring and the grooves of the neck of the container to be stopped, on either side of a par... | 02/24/1976 |
