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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 7350438 | Connection rod for internal combustion engine An internal combustion engine connecting rod is designed with bolts having a minimum required strength. A strength safety factor Sfa is calculated based on an axial strength limit load FX of the bolt and the maximum load FB to be born by the bo... | 04/01/2008 |
| 7316538 | Turbine engine with an uncoupling device, uncoupling device and fusible screw for the uncoupling device The turbine engine of the invention includes a rotor with at least one bearing, mounted on a bearing supporting part, said part being connected to the fixed structure by an uncoupling device, including at least one fusible screw passing through at least one bore, sa... | 01/08/2008 |
| 7198465 | Fastening arrangement for a split casing A casing of a hydraulic machine such as a gas turbine is formed as a horizontally split type flangeless casing. The flangeless casing consists of an upper casing and a lower casing joined together at joint faces and fastened by fastening bolts. The fastening bolt ha... | 04/03/2007 |
| 7195439 | Tightening member A hydraulic nut having a first part connected around the first end of a fixing member the first part having an annular recess which opens to receive a second part forming an annular member which fits within the annular recess, wherein a pressurized medium chamber is... | 03/27/2007 |
| 7165925 | Self adjusting, high strength, screw system A fastener system and method of inserting it, that includes a screw or bolt having two interleaved helical threads, which brackets or forms a groove for a helicoil. The helicoil expands and torques by various means to maintain hold and purchase between the screw coi... | 01/23/2007 |
| 7025550 | Pull type swage fasteners with removable mandrel A pull type swage fastener including a pin and a collar adapted to be swaged into a locking portion on the pin shank and with a removable mandrel being threadably securable in a pull cavity at the end of the pin shank and with the mandrel adapted to be gripped by an... | 04/11/2006 |
| 6769830 | Connector assembly A separable connector assembly includes a connecting member having a threaded end, and a hollow housing having a cylindrical wall that contains a body rotatably mounted therein. This body is threadably engageable with the threaded end of the connecting member. A fir... | 08/03/2004 |
| 6715975 | Tension control arrangement for a bolt A tension control arrangement including a plurality of cams disposed about an opening that accommodates a bolt to which a nut is intended to be secured. Each of the cams has a contoured outer surface, and each of the cams is rotatably supported such that the contour... | 04/06/2004 |
| 6688058 | FASTENER ASSEMBLY SERVING AS A PRODUCT, OR COMBINED WITH OTHER COMPONENTS AS A PRODUCT, ALLOWS AUTOMATIC CONTROLLED MOVEMENTS IN ONE DIRECTION AND PREVENTS MOVEMENTS IN THE OPPOSITE DIRECTION WHEN FORCES ARE APPLIED A fastener assembly 10, in respect to forces which are subsequently applied, after the installation thereof, when forces is applied in one direction, this fastener assembly 10 is self adjusting incrementally, as needed in travel or actuation; yet when a f... | 02/10/2004 |
| 6688828 | Self-torquing fasteners A bolt made from shape memory alloy that exists in a first state and is capable of changing to a second state when heated and remains in that second state even when cooled is used to self torque itself and clamp a first fixture to a second fixture. Prefer... | 02/10/2004 |
| 6685406 | Perforated nut tensioning system A stud tensioning device includes a nut having internal threads and external threads. The internal threads engage corresponding threads on the stud. At least two axial bores are defined by the nut, and posts are disposed in the bores. Each post at a first... | 02/03/2004 |
| 6585467 | Threaded fastener with press-fit washer A threaded fastener has a bolt, a nut including at least one sleeve in which the bolt is threadingly engaged, and a washer having a lower bearing surface adapted to bank on a surface of one of at least two elements to be connected with one another by the ... | 07/01/2003 |
| 6506007 | Fastening bolt A fastening bolt fastens flanges between a bolt head and a nut attached on the threaded portion of the shaft via spherical washers. The fastening bolt has a cavity formed within the shaft. By application of pressure in the cavity with a hydraulic fluid su... | 01/14/2003 |
| 6421902 | Method and device for producing and checking screwed connections A method of producing and checking a screw connection of parts by a screw under the effect of a predetermined initial tension force. Moreover, a connecting device controls the sequence of process steps automatically. A screw is especially designed for the... | 07/23/2002 |
| 6381827 | Method for maintaining a clamping force between bolted parts in high temperature A high temperature bolting system for clamping steam turbine housings and similar high temperature parts together while operating at a temperature of 800° F. to 1200° F. An elongated fastener shank and housing material have similar coefficient of therma... | 05/07/2002 |
| 6276883 | Self adjusting screw system A fastener system includes a screw or bolt which can be attached in a helicoil. The helicoil expands and torques by various means to maintain hold and purchase between the screw coil combination and the substrate into which the screw and helicoil are inse... | 08/21/2001 |
| 6263764 | Jackbolts for multi jackbolt tensioners Jackbolts for multi jackbolt tensioner embody a thread construction which taper from a maximum diameter adjacent to torque receiving end of the jackbolt when threadedly engaged with a threaded opening in the outer peripheral part of a jackbolt body. The t... | 07/24/2001 |
| 6264414 | Fastener for connecting components including a shank having a threaded portion and elongated portion and a fitting portion A fastener (1) for connecting at least two components includes a shank (4) having an axis. At least one threaded portion (7) is arranged at the shank (4), and it has a stressed cross section. At least one elongation portion (5) is arranged at the shank (4... | 07/24/2001 |
| 6254322 | Bolt with a bolt member, a washer and a sleeve for applying forces to the bolt member and the sleeve A bolt for connection two parts with one another has a bolt member having an axis, a threaded portion provided with a thread, and another portion having a polygonal circumference, a friction member connected to the polygonal circumference of the other por... | 07/03/2001 |
| 6254323 | Bolt for connecting two parts with one another, and fastening device provided with the bolt A bolt for connecting two parts with one another has a bolt member having an axis, a threaded portion provided with a thread, and another portion having a polygonal circumference, a friction washer non-rotatably connected to the polygonal circumference of... | 07/03/2001 |
| 6199453 | High temperature bolting system A high temperature bolting system for clamping steam turbine housings and similar high temperature parts together while operating at a temperature of 800° F. to 1200° F. An elongated fastener shank and housing material have similar coefficient of therma... | 03/13/2001 |
| 6195949 | Hold down device and method A hold down device and method for connecting two building elements of a building comprises an elongate member, typically in the form of a rod or a cable, that is connected between the two building structures. A tension compensator, which includes a housin... | 03/06/2001 |
| 6196781 | Screw fastener with multiple threaded portions A screw fastener with a second, additional external thread section apart from the main, external or internal, thread section in a typical bolt or nut, respectively. The axes of the two threaded sections in the nut or bolt are arranged parallel, eccentric,... | 03/06/2001 |
| 6176663 | Apparatus for reducing fastener bending stress in flanged connections An apparatus for reducing the bending stress imparted to threaded fasteners in flanged connections is disclosed. The apparatus includes a stress reducing washer positioned between the head of the threaded fastener and a counterbore in the backface of the ... | 01/23/2001 |
| 6112396 | Jackbolts for multi jackbolt tensioners Jackbolts for multi jackbolt tensioner embody a thread construction which taper from a maximum diameter adjacent to torque receiving end of the jackbolt when threadedly engaged with a threaded opening in the outer peripheral part of a jackbolt body. The t... | 09/05/2000 |
| 5992910 | Eyebolt assembly A hanger assembly for attachment to heavy loads in material handling systems such as overhead conveyors where the hanger must be angularly aligned with the conveying element such as an attached cable. The hanger includes a base, a threaded stud for load a... | 11/30/1999 |
| 5878490 | Method for connecting piping system components with limited clearance for stud tensioner A method for connecting piping system components, such as a valve and a pipe fitting, using a pair of half-height nuts in place of a single full-height nut on each stud. Each first half-height nut is torqued on its associated stud while a stud tensioner e... | 03/09/1999 |
| 5772378 | Pre-tensioning device for fastening elements and method for pre-tensioning a fastening element A pre-tensioning device is used with a fastening element for fastening pieces together, the fastening element having a tightening element movable longitudinally along a first region thereof, which fastening element is to be subjected to a pre-tensioning e... | 06/30/1998 |
| 5771266 | Device for joining together two plates of the baffle assembly of the core of a nuclear reactor The device (15) for joining together a first plate (7) and a second plate (8)of the baffle assembly, which are located substantially at right angles, includes a screw (16) engaged in a housing consisting of an opening (18) passing through the first plate ... | 06/23/1998 |
| 5700120 | Threaded fastener and method of improving the fatigue life thereof A threaded fastener and a method by which the fastener exhibits sufficiently enhanced fatigue strength so as to be suitable for use in gas compressors and turbines operating at relatively high service temperatures. The method entails a selective heat trea... | 12/23/1997 |
| 5603595 | Flywheel nut separable connector and method A method and apparatus for separably connecting a first surface to a second surface. The apparatus includes a connecting member provided with a threaded end. A rotatable body threadably engagable with the threaded end is rotatably supported against the fi... | 02/18/1997 |
| 5584627 | Load indicating fasteners A load indicating fastener composed of a body (2) having an abutment (9) which is moved by the changing length of the body (2) under an applied load, and a load sensing member (10) composed of an element (11) disposed in the direction in which a load is a... | 12/17/1996 |
| 5572920 | Cylinder liner securing apparatus A device for securing a cylinder liner (3) to a respective pumping module (2) in a reciprocating pump has a set of arrangements each with a hydraulically activated piston (8), a rod (11) of which is adapted to receive a nut (12), the retraction of which f... | 11/12/1996 |
| 5547326 | Spring washer for the securing of screws, nuts, or the like A spring washer for the securing of screws, nuts and the like is provided with an essentially ring-shaped washer body of a determined thickness having a washer top side and a washer under side, the washer under side being subdivided into an outer ring sur... | 08/20/1996 |
| 5535561 | Cable hold down and bracing system A method and apparatus for tying building components together or to the ground utilizes a system of spring-tensioned cables strung between the foundation and the top corners of any shear diaphragm. The cables are kept under tension regardless of the shrin... | 07/16/1996 |
| 5496142 | Slotted conical spring washer A slotted conical (non-flat) spring washer with an encircling ring provides improved spring washer performance. A split or slotted conical spring washer is encircled by a retaining ring that prevents the ends of the washer adjacent to the slot from expand... | 03/05/1996 |
| 5468106 | Hydraulic tensioning device An annular piston and cylinder device comprises an annular cylinder and a piston therefor, the piston having sidewall portions which extend into the cylinder towards the base thereof in the form of tapering annular webs which together define between them ... | 11/21/1995 |
| 5466107 | Spacer washer for bolted joint A spacer washer 20 (FIG. 2) for disposing between a nut and a turbine casing flange (16, 12 FIG. 5) has a foot end 24 corresponding to the footprint of the nut and extends with wall thickness 25 in one radial direction 28 no further than the nut footprint... | 11/14/1995 |
| 5256015 | Torque limiting bolt having retained shear pins Torque limiting bolt employs a number pins which shear upon the application of a predetermined torque to the bolt head. The bolt configuration insures that sheared portions of the pins are held within the bolt head to prevent undesirable scattering of the... | 10/26/1993 |
| 5226765 | Load-indicating fastener A load indicating fastener such as a bolt (10) or stud, has a shank (12) which is subject to tensile loading in use. The shank (12) has an axially extending bore (22) which receives a first gauge pin (30) anchored at its inner end (32) to the shank (12) a... | 07/13/1993 |
