William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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| Number | Title | Issue Date |
| 7527250 | Composite material Composite materials composed of a structural fibrous reinforcement and a matrix resin composition. The matrix resin composition includes at least one thermoset resin component, at least one curative component and at least one inorganic nano-scale particulate. The cu... | 05/05/2009 |
| 7419146 | Composite leaf spring geometry with an interlocking interface A suspension system includes a composite leaf spring having a mounting segment of a tapered width combined with an expanding depth. Any position along the longitudinal length of the mounting segment provides a singular cross-sectional shape taken parallel to an axle... | 09/02/2008 |
| 7354033 | Tape-spring deployable hinge A tape-spring shaped, articulating member used in deployable structures having a resilient, compliant hinge region and rigid non-hinge regions, thereby enabling a smaller fold radius and greater packaging efficiency. The increased compliance in the hinge region may ... | 04/08/2008 |
| 7284308 | Method for manufacturing a leaf spring Leaf springs have improved durability in spite of using inexpensive spring steel such as SUP9 and SUP11 as materials. While a spring main body, made of the spring steel in which Brinell hardness is under 555 HBW and not less than 388 HBW (corresponding to a diameter... | 10/23/2007 |
| 7255079 | Flanged cover assembly with flange pressure distribution compensator A flanged cover assembly includes a cover having a wall portion, a lateral attachment flange surrounding the wall portion extending outwardly therefrom and a plurality of spaced flange bores extending through the flange from a upper surface to a lower surface. The b... | 08/14/2007 |
| 7210673 | Method for relieving spring seat mounting stresses A spring assembly includes a spring seat clamped to a leaf spring at a center portion. The spring seat includes a cutout for distributing clamping stresses in a substantially uniform manner across the leaf spring. The cutout provides a relief for a central portion o... | 05/01/2007 |
| 7117799 | Overhead material handling system and track block The present invention is directed to a material handling system (100) and method (200) for isolating a carrier mechanism (110) from the system. The system (100) comprises a track (103) having a channel (105), a turntable ( | 10/10/2006 |
| 7104560 | Stabilizer and air leaf suspension using the same Disclosed are a stabilizer with conventionally unattainable, extreme swift effectiveness and an air leaf suspension using the stabilizer. The stabilizer has a stabilizer bar 18 which is U-shaped when seeing from above and which has a portion 18a | 09/12/2006 |
| 7104532 | Shock absorbing assembly for a bicycle A bicycle seat shock absorber comprising a shaft for attaching to a bicycle frame, a contoured flat spring having a first end and a second end wherein the first end is attached to the shaft, a support member having a first end and a second end wherein the first end ... | 09/12/2006 |
| 7097141 | Sway brace clamp and connector assembly It is one advantage of the invention to provide an interlocking swivel connector for attachment to an existing system supporting a suspended load below a ceiling, beam or floor without the need to disassemble or disconnect any components of the system. The connector... | 08/29/2006 |
| 7052001 | Dual rate leaf spring suspension for utility vehicle A dual rate leaf spring suspension supports a frame member over an axle of a small utility vehicle. The dual rate leaf spring suspension includes a full-length leaf spring and a half-length leaf spring. A spacer plate is the only connection point between the full-le... | 05/30/2006 |
| 7040238 | Overhead material handling system and track block The present invention is directed to a material handling system (100) and method (200) for isolating a carrier mechanism (110) from the system. The system (100) comprises a track (103) having a channel (105), a turntable ( | 05/09/2006 |
| 7036548 | Method and apparatus for positioning a sectional door relative to an opening A roller stop (50) for a sectional door (D) having a plurality of hinged panels 20, rollers (30) attached to the panels, and a pair of tracks (T, T′) receiving the rollers for guiding the sectional door between a closed vertical position and a... | 05/02/2006 |
| 7017464 | Woodworking tension board A tension board comprises a bow member that can deform resiliently to apply lateral force to a workpiece pushed between it and the fence of a table saw, and that may have an associated tension gauge element. Combination tools may employ two bow members having differ... | 03/28/2006 |
| 7017888 | Attachment arrangement for a composite leaf spring which accommodates longitudinal movement through shear displacement A suspension system includes a composite leaf spring attachment system having a bracket, a mount and a shear damper mounted therebetween. The mount is rectilinear in cross-section to receive a rearward leaf spring segment of the composite leaf spring. During flexing... | 03/28/2006 |
| 6991223 | Composite leaf spring having an arcuate attachment arrangement for vehicle mounting A suspension system includes a composite leaf spring having an arcuate segment that is located between a retaining pin and a bumper. The retaining pin includes a shank surrounded by a resilient tube. The bumper is located adjacent a rear wall of the bracket opposite... | 01/31/2006 |
| 6941634 | Method for attaching axles to a leaf springs on hydraulic disc brake vehicles A method of attaching an axle of a golf cart to a leaf spring of the golf cart, comprising the steps of aligning the leaf spring adjacent the axle and a bottom plate, inserting an end of a fastener initially through a first aperture associated with the axle and subs... | 09/13/2005 |
| 6921064 | Metering blade suspension system A metering blade suspension system utilizes a leaf spring that performs multiple combined functions such as supporting a metering blade assembly, controlling the angle, position and/or load of the blade assembly while allowing the assembly to pivot in a quasi-fricti... | 07/26/2005 |
| 6910681 | Retaining U-bolts to a tubular axle housing A tubular axle housing is provided with pairs of tabs that protrude or extend from the axle to a height or length sufficient to prevent the intermediate section of a U-bolt from sliding over the tab. The tabs also help locate and guide the U-bolt between the tabs du... | 06/28/2005 |
| 6786843 | Cylinder for automatic transmission In a structure for an automatic transmission wherein a brake is arranged in a casing, a hydraulic servomechanism for actuating the brake includes a cylinder, a piston, a return spring for biasing the piston and including an annular portion abutting on the piston and... | 09/07/2004 |
| 6702082 | Leaf spring arrangement, especially for attaching the pressure plate of a pressure plate assembly to a housing A leaf spring arrangement, especially for connecting a pressure plate to a housing, comprises a plurality of adjacent leaf spring elements, where each leaf spring element has a first attachment area for establishing the connection the pressure plate, a se... | 03/09/2004 |
| 6676137 | Snap-on EMI gasket clip and method of sealing a computer chassis from EMI In one embodiment, the present invention is directed to a system for shielding electromagnetic energy. The system comprises an electromagnetic interference (EMI) gasket comprising at least one longitudinal member that is operable to exert a spring force u... | 01/13/2004 |
| 6659482 | Composite spring and control arm A steering assembly is provided for a vehicle including an upper connection, typically provided by an upper control arm. A knuckle includes an upper and lower portions with the upper portion supported by the upper connection. A lower assembly of the prese... | 12/09/2003 |
| 6619637 | Leaf spring arrangement for automotive vehicle A suspension spring arrangement for a vehicle having an upper elongated spring leaf (12) and a lower elongated spring leaf (14) with an upper elongated spring leaf (12) is provided with a slot (22) and a lower elongated spring leaf (14) is provided with a... | 09/16/2003 |
| 6530562 | Automotive beam spring A beam spring capable of substantial elastic deformation in two planes to provide for independent wheel suspension and to commonize suspension mounting systems in a vehicle chassis.... | 03/11/2003 |
| 6435485 | Composite bow mono-leaf spring A fiberglass composite monoleaf bow spring for use in a vehicle chassis system capable of multi-linear response when compressed. The fiberglass composite monoleaf bow spring extends longitudinally below a vehicle frame and is secured at each end of the ve... | 08/20/2002 |
| 6412757 | Shock absorbing apparatus A shock absorbing apparatus that absorbs a shock produced by an abutment of a traveler on a stop member when the traveler is brought to a stop at a predetermined position includes a leaf spring arranged adjacent the stop member in a substantially face-to-... | 07/02/2002 |
| 6406007 | Leaf spring assembly having full-leaf leaf spring component and half-leaf leaf spring component A leaf spring assembly for use as an active component in vehicle suspension systems includes a full-leaf leaf spring component and a half-leaf leaf spring component connected thereto. The full-leaf leaf spring extends substantially the entire length of th... | 06/18/2002 |
| 6352245 | Integrated front lower shock mount, axle spacer and caster wedge The invention provides a single member insert positionable between a front axle and each front leaf spring as a spacer. The member allows attachment of one end of a shock absorber for bracing against the axle. The member also serves as a caster wedge for ... | 03/05/2002 |
| 6332618 | Double sided gasket A metal gasket for preventing leakage of radio frequency signals when mounting shielded radio electronics includes gasket body having a first surface and an opposite second surface and a plurality of spring arms. Each spring arm includes a free proximal p... | 12/25/2001 |
| 6279883 | Bearing module for an actuating element The bearing module (10) is used to support an actuating element which can be displaced counter to the force of at least one return spring (32) with a force hysteresis due to friction. With previous bearing modules, complex friction mechanisms which ensure... | 08/28/2001 |
| 6056276 | Leaf spring for a suspension of a vehicle Leaf spring, in particular for a suspension of a vehicle, of the multiple-leaf type, and preferably of the double-leaf type: a first, upper leaf is provided at respective ends with corresponding eyelets for attachment to a vehicle, and is made of metal ma... | 05/02/2000 |
| 6012709 | Hybrid leaf spring and suspension system for supporting an axle on a vehicle In a hybrid leaf spring, an elongated primary leaf element is provided having a first modulus of elasticity, a tension surface, and a compression surface. At least one layer of composite material is substantially parallel to and bonded to the tension surf... | 01/11/2000 |
| 5860637 | Energy absorbing assembly Rubber shock absorber systems for use between the frame and equalizer bar of a construction vehicle usually fail to withstand high temperature environments. A metallic spring assembly is provided which is capable of high flexibility and durability. The sp... | 01/19/1999 |
| 5730427 | Trailer spring assembly A leaf spring assembly for the suspension of an axle of a vehicle, particularly a trailer, has a plurality of superposed steel plates, the ends of the longest of the plates being adapted or formed into means, preferably hooks, for mounting the leaf spring... | 03/24/1998 |
| 5253849 | Wheel suspension structure with buffering leaf springs A wheel suspending device for a vehicle has a plurality of leaf springs disposed inside of a rim of the wheel. Each of the leaf springs is a chord member, two extremities of which are supported by the rim member, and a central portion of which is supporte... | 10/19/1993 |
| 5251930 | Suspension system with transverse leaf spring A suspension system on a motor vehicle includes a transverse leaf spring interconnecting knuckles on which road wheels are rotatably supported. The suspension system includes a pair of knuckle members on which the road wheels are rotatably mounted, an elo... | 10/12/1993 |
| 5244190 | Vehicle wheel suspension method The invention has for its object a suspension with dynamically variable flexibility or stiffness. The suspension process uses one or several elastic elements mounted opposite each other, so as to impress on the vehicle suspension a variation of stiffness ... | 09/14/1993 |
| 5209518 | Dual-stage tapered leaf spring for a trailer The present invention discloses a lightweight dual-stage tapered leaf spring assembly for use in heavy-duty trailer suspension applications. The dual-leaf tapered leaf spring assembly has a main or first tapered leaf defining a first stage rate and a seco... | 05/11/1993 |
| 5203545 | Vehicle suspension member designed to divert crack propagation A vehicle suspension member such as a spring leaf or plate (50) is provided with at least one discontinuity therein that extends generally parallel to a longitudinal axis ("L/A") extending therealong between opposite ends thereof and is effective to diver... | 04/20/1993 |