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An aircraft having vertical takeoff and landing capability provided with at least first and second laterally extending paddle wheels rotatable on a central axis perpendicular to the longitudinal axis of the aircraft fuselage and between its nose and tail.
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| Number | Title | Issue Date |
| 7055289 | System and method for forming a structural connection A system for making a structural connection includes a structural member, a plurality of strips for engaging the structural member and securing devices for securing the strips to a building structure that supports the structural member. The method of making the stru... | 06/06/2006 |
| 6351918 | Insulated concrete wall A system is disclosed for securing a layer of insulation in place between two spaced apart wall forms while concrete is poured on both sides of the insulation layer.... | 03/05/2002 |
| 6193210 | Fastening fitting with a reinforcing member-tightening portion A fastening fitting is formed of a U-shaped fastening portion with a straight portion and a narrow mouth for holding a member therein, a linearly extending portion extending from the straight portion to be bent with respect to a plane including the U-shap... | 02/27/2001 |
| 6079176 | Insulated concrete wall A system for insulating only the interior surface of a concrete wall to be poured between a pair of interior and exterior wall forms. The system includes horizontally extending elongated tie strips which connect to each of the wall forms to hold the wall ... | 06/27/2000 |
| 5855807 | Concrete form securing device A concrete form securing device includes two or more securing frames combined together, plural spacing bars, plural engaging members, and plural fixing boards as main components. The two securing frames are temporarily kept in place by a sustain bar and t... | 01/05/1999 |
| 5783103 | Snap tie A new snap tie for the purpose of keeping snap ties in place during the forming process. The inventive device includes a snap tie which includes an elongated member with a conical shaped spacer fitted at about the center of the elongated member and a pair... | 07/21/1998 |
| 5547163 | Wedged tiewire assembled plyform panel to I-beam stakes A wedged preformed single strand tiewire assembling of plyform panels to I-beam stakes securing construction forms laterally, vertically and horizontally which are assembled aligned, plumb and level; the forms are comprised of flat, tapered steel wedges, ... | 08/20/1996 |
| 5473849 | Building wall and method of constructing same A simple, environmentally benign building for on-site erection and fabrication is made of monolithic, architectural, structural walls, beams, girders, joists and panels of relatively high physical strength which exhibit great durability and resistance to ... | 12/12/1995 |
| 5409193 | Insulated concrete wall tie system Apparatus for in situ attachment of insulation panels to poured concrete walls as the walls are formed. Preferably, polymeric F-shaped strips are attached to novel tie bars by transverse retainers, and receive the edges of insulation panels to hold them a... | 04/25/1995 |
| 5351456 | Concrete form tie wedge A wedge for use with tie rods in maintaining a predetermined spaced relation between opposed forms prior to and during the pouring of a concrete wall in the space between the forms incorporates a ramp portion which includes an elongated keyhole slot for r... | 10/04/1994 |
| 5328146 | Clamping device for mold boards A clamping device for clamping mold boards together includes a base, a bracket extended upward from the base, a space and a chamber formed in the bracket, a lever pivotally coupled between the wall members and having a number of teeth formed on the lower ... | 07/12/1994 |
| 5196209 | Making a prestressed concrete beam A prestressed concrete beam is made by first fitting the opposite ends of a group of reinforcing rods through respective holes in a pair of longitudinally spaced end plates having longitudinally confronting inner faces and opposite outer faces, then provi... | 03/23/1993 |
| 5110083 | Ross staging bracket A first metal bar having an upwardly extending flange; a second metal bar; a third angulated metal bar or strut; a first horizontal waler support plate; a second vertical form engaging plate extending downwardly from one end of the first horizontal waler ... | 05/05/1992 |
| 5050365 | Concrete form snap tie A snap tie for use in maintaining a predetermined spaced relation between opposed forms prior to and during the pouring of a concrete wall therebetween comprises a steel rod of predetermined uniform cylindrical section having at each end an integrally for... | 09/24/1991 |
| 5020769 | Shuttering for use in building construction The invention relates to shuttering elements for use in building construction. The shuttering elements are of a synthetic plastics material and define a rectangular shuttering wall, peripheral side walls and engagement and locking formations whereby a plu... | 06/04/1991 |
| 4899978 | Locking bracket for holding tie rod ends A form tie lock is provided which is releasably locked in an open position and swings over center to a closed position. A ramp is provided on an opening through which a form tie loop extends in order to compensate for any deflection of the claw of the for... | 02/13/1990 |
| 4726560 | Concrete form tie assembly A concrete form tie assembly in which the tie rod is formed from a high tensile strength flexible wire member, with the sleeve being formed of a flexible or yieldable material. A short sleeve member is inserted into the spacer sleeve adjacent one end with... | 02/23/1988 |
| 4320888 | Concrete form systems and components thereof Concrete form systems and hardware components thereof wherein the inner and outer walls are composed of abutting, side-by-side plywood sheets and are tied together by wall ties and stud-bearing plates, wherein the improvements reside in: metal straps serv... | 03/23/1982 |
| 4247073 | Concrete form tie assemblies A tie assembly for use in removably supporting plywood sheets or other wall defining materials in fixed spaced relationship to define a form into which concrete may be poured to form a portion of a structure. The tie assembly so operates that portions the... | 01/27/1981 |
| 4231541 | Concrete form panel tying apparatus Apparatus for tying together concrete form panels includes an elongated tie and means attachable to a concrete form panel for clamping the tie to restrain relative movement between the tie and the form panel. The tie has end portions of a first transverse... | 11/04/1980 |
| 4208030 | Concrete form tie rod and fastener A headless form tie rod and associated fastener that contacts the form tie at two spaced points. The tie rod provides a cylindrical body with plural spaced areas protruding in one dimension and flattened in the other dimension. The principal fastening str... | 06/17/1980 |
| 4194717 | Wedge and bolt assembly for panel units A concrete wall form structure of the type having a pair of aligned contiguous pre-fabricated panel units disposed in an edged-edged, upstanding relationship. Each panel unit has one of its marginal frame members abutting an adjacent marginal frame member... | 03/25/1980 |
| 4158452 | Clamping lock for looped ties A clamping lock is provided for use with a looped tie in a form for settable casting compositions, such as concrete, which lock is provided with protrusions on each of a pair of clamping members to fit into aligned connector slots of a pair of rails of ad... | 06/19/1979 |
| 4125245 | Top rail tie bracket for concrete forms A top rail tie bracket for concrete forms for eliminating the usual additional wooden rail required across the top of the top rail of the form for bracing the wedging element of the top snap tie rod. A reusable T-shaped bracket is provided, one leg of whi... | 11/14/1978 |
| 4113226 | Apparatus to adjust and maintain the distance between wall forms A back side plate and a front side plate having a screw type wall tie passing therethrough maintain a strongback or waler therebetween by connecting tension stud bolts with a panel or wall form attached to a shelf portion of the back side plate with adjus... | 09/12/1978 |
| 4085495 | Method of erecting forms for a concrete form Providing vertically erect sets of oppositely positioned forming panels, with the sets being interconnected by means of tie rods and wedging plates. Some of the wedging plates are positioned adjacent to edge portions of their related panels so as to form ... | 04/25/1978 |
| 4079910 | Concrete form system including holding and spacing apparatus A concrete form holding and spacing apparatus is provided for opposed banks of form sheathing panels having backing studs, and includes reglet runners bearing against the runner faces of the panel backs and held apart by spacer rods which detachably inter... | 03/21/1978 |
| 4068818 | Clamping lock for tie rod ends There is provided an improved clamping lock for tie rod ends in form structures for settable casting compositions, e.g., concrete casting forms, which lock is characterized by means for attaching it to the form structure, and a pair of jaws shaped for mat... | 01/17/1978 |
| 4058285 | Apparatus to adjust and maintain the distance between wall forms A back side plate and a front side plate having a screw type wall tie passing therethrough maintain a strongback or waler therebetween by connecting tension stud bolts with a panel or wall form attached to a shelf portion of the back side plate with adjus... | 11/15/1977 |
| 4054259 | Waler-stiffback bracket A bracket is provided including first and second elongated upper horizontal and lower upstanding flanges joined at adjacent inner and upper ends. The outer end of the first horizontal flange terminates in an upstanding waler retaining flange and the upper... | 10/18/1977 |
| 4044986 | Concrete form panel tying apparatus Apparatus for tying together concrete form panels includes an elongated tie and means attachable to a concrete form panel for anchoring the tie to restrain relative movement between the tie and the form panel. Means are provided both to facilitate engagem... | 08/30/1977 |
| 4034950 | Form tie An article of manufacture for fixing the sides of a form with respect to each other is disclosed, which article consists of a unitary elongated metal member of generally Z-shape configuration having generally parallel end portions joined by an intermediat... | 07/12/1977 |
| 4006878 | Concrete form assembly A concrete form assembly comprises spaced apart form members that are retained in position during concrete pouring by an arrangement that includes spacer elements, plastic tie rods, and anchors. The anchors are on the outsides of the forms and grip the ti... | 02/08/1977 |
| 4003546 | Convertible waler brace A waler brace or bracket is provided to be used for either a 3000-lb. forming system or a 5000-lb. forming system by accommodating either one 2×4 horizontal waler or a vertical stud in addition to a horizontal waler. The brace or bracket may be construct... | 01/18/1977 |
| 3984079 | Clamping lock for tie rod ends There is provided an improved clamping lock for tie rod ends in form structures for settable casting compositions, e.g., concrete casting forms, which lock is characterized by means for attaching it to the form structure, and a pair of jaws shaped for mat... | 10/05/1976 |
