...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 8100378 | Coupling system for vertically engaging support columns for concrete multi floor construction A vertical column coupling providing a means for creating entire concrete forms for constructing the ceiling and floors of multistory buildings utilizing a plurality of pipe columns and supported form slabs that are erected to a desired height and in horizontal alig... | 01/24/2012 |
| 7571888 | Floor and roof formwork system A slab formwork comprising vertical props, fixed bolsters mounted on the upper end of the props and shuttering panels supported on the bolsters. In correspondence with the four corners of a planar, horizontal and upper surface of the bolsters, some diagonal protuber... | 08/11/2009 |
| 7395999 | Reinforced polymer panel and method for building construction A method and apparatus for manufacturing reinforced wall panels and reinforced roof panels and using the pre-manufactured reinforced wall and roof panels in the construction of a building structure at a building site. The reinforced wall and roof panels are molded u... | 07/08/2008 |
| 7357238 | Expandable and collapsible modular structure An expandable and collapsible structural module is provided. The module includes at least three strut pairs, the at least three strut pairs being arranged end to end, at least three corners being defined by connected ends of the at least three strut pairs. The modul... | 04/15/2008 |
| 7353642 | Concrete slab system with self-supported insulation A concrete slab system with self supported insulation and method of making same which comprises a poured-in-place concrete slab with an insulation board held by metal or plastic C channels. The insulation is held in place on both sides by C channels. The C channels ... | 04/08/2008 |
| 7331148 | Stud for concrete forms and forms using such studs A concrete form comprises cross members, plywood, and metal studs. The studs include a front wall, a rear wall, and a pair of side walls, the walls arranged to form a generally rectangular cross-section. A pair of inner walls extends between and perpendicular to the... | 02/19/2008 |
| 7311470 | Wale and retaining wall system A wale for use in bracing a retaining wall. The wale is comprise of a back wall, a front wall having a channel formed therein, and a plurality connecting walls connecting the back and front walls to form at least one chamber between the back and front walls. In one ... | 12/25/2007 |
| 7246779 | Telescopic legs and tables A telescopic leg has a housing with a lift cylinder or mechanical screw jack type lift and an external track for adjustably coupling to a member. Such telescopic legs can be used to define a variety of table base configurations by providing multiple angularly aligne... | 07/24/2007 |
| 7216773 | Quick assembly storage cabinet A metal cabinet includes a plurality of horizontal shelf members and a plurality of vertical dividers. Each shelf member includes a plurality of slits extending between edges of the shelf member. Each vertical divider includes a plurality of slits extending between ... | 05/15/2007 |
| 7204471 | Method and arrangement for forming construction panels and structures A form-work support arrangement for building form-work for moulding a concrete construction panel on top of a previously poured concrete panel (58). Generally the upper panel to be moulded has the same horizontal dimensions as the previously poured panel (... | 04/17/2007 |
| 7165361 | Building construction shores An adjustable building construction shore has an inner tubular member extending internally of an outer tubular member and displaceable longitudinally of the outer tubular member, the inner and outer members having projecting and recessed longitudinal portions slidab... | 01/23/2007 |
| 7165912 | Apparatus for rebuilding a sand beach A device is provided for preventing shoreline erosion and for rebuilding the sand beach along the shoreline of a large body of water. A series of the devices are placed in side-by-side relation essentially parallel to the shoreline. The device includes a hollow plas... | 01/23/2007 |
| 7146773 | Concrete accepting wall structure with adjustable curvature A structure for forming a vertically orientated wall comprises a flexible front panel having a longitudinal axis, a transverse axis and substantially continuous front surface; a flexible rear panel positioned rearwardly and parallel to the front panel; and a plurali... | 12/12/2006 |
| 7131624 | Landscape edging form assembly and method A landscape edging form assembly for forming a concrete edging in place, includes first and second sidewalls and a series of flexible connectors extending between and interconnecting the sidewalls. The flexible connectors are spaced apart from each other in the dire... | 11/07/2006 |
| 7131627 | Concrete forming panel with flexible barrier A forming panel and method for using the same in construction of self-sustaining concrete wall structures is provided wherein a flexible barrier element is provided along a margin on the forming panel for impeding the flow of water and fine particles of a concrete m... | 11/07/2006 |
| 7114695 | Tilt-up concrete wall panel form and method of fabricating same An improved, lightweight, portable, and self-contained concrete form for fabricating tilt-up concrete walls is provided. The form includes a frame made from metal frame members joined at their ends with the frame members forming the sides of the frame. The frame mem... | 10/03/2006 |
| 7114715 | Extendable aluminum bar clamp A bar clamp including a first bar member and a second bar member with the second bar member telescoping out from the first bar member. A securing mechanism, such as a pin in the first member, releasably secures the members together at a preferred telescoping positio... | 10/03/2006 |
| 7100344 | Shuttering element and process for manufacturing and repair of the same The shuttering element or similar, with a panel-shaped carrier (2; 7), according to the invention is characterized in that the carrier (2; 7) is covered at least on one side with a film (3; 6), which is attached to the carrier (2; 7) in a... | 09/05/2006 |
| 7076925 | Integrated footings A low impact foundation system requiring little or no excavation, and allowing for the preservation of soil and drainage characteristics of the site upon which it is erected. The system utilizes small obliquely driven piles in combination with footing or otherwise f... | 07/18/2006 |
| 7070154 | Storage bracket for a snow plow A storage bracket facilitates storage of portions of a vehicle snow plow. The snow plow has a support frame portion mountable to a vehicle, and a lift frame portion, mountable on the support frame portion, for lifting another portion of the snow plow. The support fr... | 07/04/2006 |
| 7048258 | Apparatus for moving objects This invention relates to an apparatus (1) for lifting and moving objects (2), the apparatus including a mobile base means, a telescoping post means (6, 7), an object handling cradle and a cradle (50) adjusting means (20, 21), wher... | 05/23/2006 |
| 7048249 | Circular formwork Disclosed is a formwork element (1) which can be assembled with other formwork elements (1) so as to form a formwork structure. A formwork shell (4) having an adjustable curvature is supported by means of back supports (5) so as to create... | 05/23/2006 |
| 7018196 | Skirt forming member for vacuum-forming systems A customizable skirt-forming member is disclosed, for use in high stress acrylic tub formation operations. The member generally has a rigid forming wall, at least one adjustable wing hingeably associated with the forming wall, and means for altering the pitch of the... | 03/28/2006 |
| 7004737 | Methods and apparatus for forming concrete structures An apparatus for forming concrete structures includes a first truss module and a second truss module, as well as a first and a second concrete form. The apparatus further includes a first and a second actuator device. Each first and second actuator device is mounted... | 02/28/2006 |
| 7001558 | Counter top mold and method of using same A mold for producing a finished countertop on top of a countertop substrate is provided. The mold is comprised of a shaped inner surface to receive a countertop material pour and form a countertop edge and a tab extending from the shaped inner surface, the tab dimen... | 02/21/2006 |
| 6969041 | Method of forming concrete structures using panels having flexible barriers A forming panel and method for using the same in construction of self-sustaining concrete wall structures is provided wherein a flexible barrier element is provided along a margin on the forming panel for impeding the flow of water and fine particles of a concrete m... | 11/29/2005 |
| 6962316 | Concrete forming panel with lightweight frame A concrete forming panel with lightweight siderail includes a face plate and a frame, the frame including at least one siderail and a bushing plate coupled thereto, the bushing plate having thereon a wear member of a material having greater hardness than the bushing... | 11/08/2005 |
| 6913422 | Shoring leg with node connectors A shoring post suitable for use with ledger frames uses node sleeves which surround the shoring post. Preferably, the node sleeves are an extruded component with a center cavity that closely conforms to the exterior of the shoring post. The node sleeves are secured ... | 07/05/2005 |
| 6896972 | Round formwork module A round formwork module comprising a flexible skin having a front side which, when used, constitutes the forming surface for a concrete structure which is to be cast, and also provided with a rear side and a supporting structure which is arranged on the rear side of... | 05/24/2005 |
| 6874288 | Concrete deck depression form system A system and method for forming changes in elevation in a concrete slab includes one or more channels having substantially parallel bottom and top edges. The bottom and top edges include bent ends and a number of spaced apertures are formed in the bottom and top edg... | 04/05/2005 |
| 6871454 | Post shoring and decking system A post shoring and decking system is for use in supporting sheet on which cement compositions can be poured. This post shoring and decking system includes a main leg member, which has a U-shaped channel, a drophead member for coupling with the main leg member and a ... | 03/29/2005 |
| 6848232 | Pre-cast concrete wall system A casting tool for forming precast concrete wall sections. A base is disposed generally in a horizontal plane and has an upper surface. A pair of opposing sidewalls are disposed proximate the upper surface. Each of the sidewalls has a first position in which the sid... | 02/01/2005 |
| 6668511 | Formwork for pillars It is constituted by several plates (1), provided in its outer side (4) with transverse ribs (5), formed by C-shaped profiles and joined together to form a prismatic contour (7), closed by the inner flat sides of all the plates, the plates comprising a me... | 12/30/2003 |
| 6658810 | Tilt-up concrete wall panel form and method of fabricating same An improved, lightweight, portable, and self-contained concrete form for fabricating tilt-up concrete walls is provided. The form includes a frame made from metal frame members joined at their ends with the frame members forming the sides of the frame. Th... | 12/09/2003 |
| 6655100 | Framing assembly and method for the formation of a curved wall or like structure A framing assembly and associated method of orienting and supporting a plurality of framing studs for constructing a curved wall through the utilization of a base formed of a high strength, flexible and at least partially separable material comprising a p... | 12/02/2003 |
| 6655650 | Concrete forming panel with flexible barrier A forming panel and method for using the same in construction of self-sustaining concrete wall structures is provided wherein a flexible barrier element is provided along a margin on the forming panel for impeding the flow of water and fine particles of a... | 12/02/2003 |
| 6604326 | Universal brick-back holder A holder comprising a rigid base bar having a pin end and a stabilizing end; a rigid stabilizing bar having a base end and an opposite end, with the base end of the rigid stabilizing bar being rigidly attached to the stabilizing end of the rigid base bar,... | 08/12/2003 |
| 6550213 | Slab foundation construction fixture, particularly as adapts standard girts for pre-use as foundation forms A system for forming concrete slabs has been developed for commercial buildings having a steel moment-frame structure. This system utilizes the cold-formed-steel framing members, such as the wall girts shipped with a particular building package, to be fir... | 04/22/2003 |
| 6550215 | Precast concrete wall system A casting tool for forming precast concrete wall sections. A base is disposed generally in a horizontal plane and has an upper surface. A pair of opposing sidewalls are disposed proximate the upper surface. Each of the sidewalls has a first position in wh... | 04/22/2003 |
| 6540201 | Tilt-up concrete panel forming system A system for tilt-up concrete panel forming for use on a casting surface comprising an elongated base strip having an elongated groove in an upper surface, having a chamfered edge, and having a bottom surface adapted to be adhesively attached to the casti... | 04/01/2003 |