An electromagnetic inertial actuator includes a support base (3) and a parallel arrangement (5) of a first flexure part (7) a voice coil motor part (9) and a second flexure part (11). The parallel arrangement (5) is cantilevered from the support base (3).

A coating for elastomers is provided comprising, a rubber modified epoxy resin, an epoxy reactive diluent, and an epoxy curative. The epoxy resin is modified with a carboxyl terminated butadiene acrylonitrile rubber, and the coating is capable of co-extrusion with an elastomeric substrate, such as a weatherstri...

A torque monitoring system includes a rotatable measurement interface and a stationary data receiver. The measurement interface is configured to be attached to a rotatable shaft. The measurement interface includes a strain gauge, a processor, and a near field communication (NFC) transceiver coil. The stationary data...

A digital processing link for a vibration control system collects sensor signals at a transfer station and combines the sensor signals into a collective signal that is transmitted under a digital communications protocol to a base station. The sensor signals are separated at the base station and individually processe...

The present subject matter relates to improved damping fluid mount devices systems and methods in which a damping fluid mount (100) includes an inner member (110) an elastomer section (130) that is affixed to an outer surface of the inner member (110) an annular damping plate (140) attached to a bottom portion of th...

An engine mount system having failsafe securement points. The engine mount system includes a forward mount carrying a coat hanger shackle (51) having a spherical bearing (54) and a cylindrical bearing (53). Securement of the engine mount to a support utilizes pins (57 58) and bolts (61) with a retaining double wrenc...

A frequency dependent damper (10) for creating a damping force in response to a variable  frequency disturbance includes an outer damper body (12) having an internal cavity (16) an inner damper body (14) for receiving the variable  frequency disturbance extending into the internal cavity a first fluid chamber (46) a...

A maleimide terminated polyimide incorporated into a two-part acrylic structural adhesive system. The maleimide terminated polyimide of the various embodiments of the present invention provide improving thermal stability, strength, and toughness.

A double knuckle coupling suitable for transmitting torque applied to a first input shaft to a second shaft wherein the coupling accommodates angular changes between the shafts. Additionally the disclosure describes an improved mud motor transmission incorporating the coupling.

A vehicle(520) a nonrotating vehicle body (524), a rotating machine member (522), and including a vehicle vibration control system (409), the vehicle vibration control system including a controller (411), a vehicle rotating machine member sensor (552) for inputting vehicle rotating machine member data correlating to...

A rotary wing aircraft (520) including a vehicle vibration control system (409). The vehicle vibration control system includes a rotating hub mounted vibration control system (HMVS) (20) rotating with the rotating rotary wing hub (522). The vehicle vibration control system includes a rotary wing aircraft member sens...

Rotary wing aircraft electronic control system including a tachometer (552) and a plurality of nonrotating body vibration control sensors (554) outputting at least first nonrotating body vibration sensor data correlating to vibrations. The system includes a plurality of nonrotating body force generators (530) to inp...

A 100% non-volatile, one-part liquid underfill encapsulant is disclosed for application to the active side of a large wafer or integrated circuit chip. Upon coating, the encapsulant is converted to a liquefiable, tack-free solid by exposure to radiation, particularly in the UV, visible and infrared spectrum. The und...

An isolation mount for supporting and isolating one part from another includes an inner member formed to be connected to one of the parts and an outer member formed to be connected to one of the parts. The inner member has a first and a second inner plates being connected at one end and extending at a first angle...

Disclosed is a rubber-metal adhesive in the form of dispersed solids in a volatile liquid carrier, with a specified pigment grind and is spray able at uniform film coatings on metal surfaces at 25±2 solids content wt% and a viscosity of from 50 to about 500 cps (Brookfield LVT 2 @ 30 rpm). The adhesive comprises a d...

A helicopter rotating hub mounted vibration control system for a helicopter rotary wing hub having a periodic vibration while rotating at a helicopter operational rotation frequency. The helicopter rotating hub mounted vibration control system includes an annular ring rotary housing attachable to the helicopter rota...

A finger for a crop gathering auger for an agricultural combine, including an elastomeric tethering outrigger which arches a failure region of the finger and will retain a free end of the finger in connection with a mounting end thereof when the failure region is broken.

An aircraft (20) with at least one rotating machine (22) including: a power source (26), outputting a plurality of electromagnetic force generator power outputs, an aerostructure (24) including a plurality of distributed active vibration control system sites, at least a first distributed active vibration electromagn...

A fluid-elastomeric damper assembly (10) operable for damping relative motion between a first structure (20) and a second structure (22) including a housing structure (24) grounded to the first structure (20) and a plurality of elastomer seals (12,16) coupled to the housing structure, the housing structure and th...

Two-part, elastomeric sealant coatings curable at ambient temperature. The sealant contains a radical polymerizable component, an oxidizing agent and a reducing agent, and optionally an epoxy component, polar wax, and/or rheology modifier. The radical-polymerizable component contains 25 to 45 weight percent of alkac...

This invention relates to a spherical elastomer bearing assembly (44,44a,44b,44c) and an inner element (24,24a,24b,24c) having a generally spherical external surface (26,26c); a generally cylindrical outer element (28,28a,28b) having a generally spherical inner surface (30) which receives said external surface (34) ...

ABSTRACT DUAL CURE ADHESIVE FORMULATIONS An adhesive composition comprising as principal components, a polymerizable component, an ambient temperature radical polymerization catalyst system and a photoinitiator. The adhesive may optionally comprise an adhesion promoter, a toughener, an epoxy, and a filler material....

Latent thermal initiators and protectant compositions that remain shelf stable at elevated temperatures, yet readily cure during a solder bump reflovv process or other high temperature processing. The thermal initiators comprise thermally labile cation-anion pairs where the blocked cation prevents cure at low tem...

A resilient member (29) for a side bearing includes a first rigid element (31) extending in a linear direction and having a first end and a second end. A second rigid element (41) extends in the linear direction of the first rigid element spaced from the first rigid element to provide a space between the two. The fi...

A rotary blade rotating hub mounted rotating assembly vibration control system (20) including a first imbalance mass concentration rotor (28), a second imbalance mass concentration rotor (44), a third imbalance mass concentration rotor (38""), and a fourth imbalance mass concentration rotor (44""). The first imbalan...

A rotary wing system with a troublesome motion when rotating about a rotation axis  including a fluid tubular damper with a damper fluid for controlling the troublesome motion. The fluid damper has an inboard end and an outboard end  the fluid damper first inboard end attached to a rotary wing system inboard member...

A rotary wing aircraft vehicle vibration control system includes a hub mounted vibration control system. The system includes a sensor for outputting data correlating to relative rotation of the hub rotating about the Z axis relative to the nonrotating body  first sensor outputting first data correlating to vibration...

Method of mounting an engine (50) in a rotary wing aircraft. The method includes providing a rotary wing aircraft having an aircraft body (54) supported in flight through an exterior air space by a rotary wing system rotating with an operational rotating frequency (P) with a plurality of (N) rotary wings the rotary ...

The present invention provides an ambient temperature cured coated articles where the coating ts robbery, high elongation. weatherable coating composition as a mixture of two parts, one part containing a solution of a functional film forming polymer. and the other part providing the curing component. The stability a...

An ambient temperature curable 2-part liquid coating composition comprising in one part (a) a flexible film-forming polymer exhibiting a Tg of less than 0degreeC and incorporated therein a functional group which is reactive to an active hydrogen containing curing agent, or said functional group is an active hydro...

An adhesive for bonding comprising a blocked isocyanate and organic carbonate and optionally a phenoxy resin catalyst metal acetylacetonate and a process for using such an adhesive to bond elastomers such as liquid silicone rubber to substrates such as polycarbonate in an injection molding process. ...

A method/system for controlling helicopter vibrations is provided that includes a vibration canceling force generator for actively generating a vibration canceling force. The system includes a resonant actuator having a natural resonant frequency and a resonant actuator electronic control system. The resonant actuat...

An aircraft rotary wing motion control fluid device (200) providing motion control and with wireless sensing (260) of at least one fluid property inside the fluid device (200) is provided. The wireless sensing system (260) is integrated with at least one of the first (212) and second (214) aircraft rotary wing motio...

Motion control bearings and methods making such with the capability to monitor properties therein is provided. Devices and methods for creating and using motion control bearings for rotary wing aircraft in particular are disclosed using wireless communication and monitoring of multiple load motion and health related...

An acrylic adhesive composition is provided comprising a free radical polymerizable monomer an initiation system and a co accelerator that enhances the reactivity of the initiation system by increasing the reaction rate between the oxidizing agent and the reducing agent. The free radical polymerizable monomer prefer...

A rotary wing aircraft bearing for providing constrained relative motion between a first rotary wing aircraft member and a second rotary wing aircraft member. The bearing includes an elastomeric mold bonded laminated subassembly  the elastomeric moid bonded laminated subassembly including a plurality of mold bonded ...

A resonant inertial force generator for controlling vibrations of a structure includes a compliant spring comprising a stack of flexures and elastomeric shims in alternating arrangement, a driven inertial mass coupled to the compliant spring to generate a vibration controlling force.

In a mount (10,70,80,90) in a railway truck (12) having a lateral axle (16) and a longitudinal fore-aft side frame (20), comprising: a first elastic material layer (32) having a bottom surface and a plurality of longitudinal chambers (62);a second elastic material layer (34) having a top surface and a ...

An ambient temperature curable, 2-part liquid coating compositioncomprising in one part (a) a flexible film-forming polymer exhibiting a Tg of lessthan 0°C and incorporated therein a functional group which it reactive to anactive hydrogen containing curing agent, or said functional group is...

An aqueous metal surface treatment composition comprising the following ingredients : (A) an aqueous dispersionof a phenolic resin that includes a reaction product of(i) a phenolic resin precursor; (ii) a modifying agent, comprising a hydrocarhylmoiety bonded to at least one functional moiety tha...

A rotary wing aircraft bearing that provides a constrained relative motion between a first rotary wing aircraft member and a second rotary wing aircraft member. The bearing includes an elastomeric mold bonded laminated bearing stack  the elastomeric mold bonded laminated bearing stack including a plurality of mold b...

A rail fasteners (10) for mounting a rail to a support foundation are provided. The rail fastener includes a bottom plate (30) for engaging the support foundation  and a top plate (20) with a rail-mounting member for engaging the rail. A first elastomeric body (40) between the top plate and the bottom plate supports...

Systems devices and methods for a hub based active vibration control (AVC) design includes at least one pair of co rotating motorized imbalanced rotors that create a controllable rotating force vector that can be controlled to cancel hub loads on a rotating hub. This control is achievable using a configuration in ...

Torque generating devices systems and/or related methods are disclosed. In one aspect a torque generating device (100) may include a housing (102) at least one top and one bottom pole (108) at least one side pole (110) at least two rotors (116) for rotating within the housing a shaft (104) supported by bearings (111...

An adhesive and method for injection or compression bonding, where the adhesive is based on a grafted polypropylene resin and at least one of maleimide compound, phenolic resin, blocked isocyanate, functionalized silane, or an epoxy resin.

Systems and methods for measuring displacement parameters of rotating shafts and couplings are disclosed. In some aspects a measurement system includes a shaft extended in a longitudinal direction and a target wheel configured to rotate with the shaft. The target wheel includes sensor targets circumferentially distr...

An active vibration control system (AVCS) and method for reducing motion and/or vibration of a seat frame within an aircraft includes vibration sensors, a controller, and force generators. In some embodiments, the vibration sensors and/or the force generators are attached to the seat frames. In other embodiments, th...

Provided are adhesives containing a phenoxy resin grafted with methyl methacrylate (MMA) and/or methacrylic acid (MAA), and including a uretdione or a silane. The adhesive compositions are completely or substantially absent free isocyanate. The grafted phenoxy resin forms crosslinking which allows the adhesive to ch...

Systems and method for active vibration control on an aircraft. An active vibration control system (AVCS) is configured for an aircraft having an aircraft structure and a gun. The AVCS includes at least one control sensor on the aircraft, at least one force generator on the aircraft, and at least one controller in e...

A one-part adhesive including a grafted phenoxy resin, a polymaleimide compound, an organic carbonate, and an optional silane adhesion promoter is described. More particularly, the grafted phenoxy resin includes carboxylic acid and acrylate ester functionality. Methods of using adhesives to bond a thermoplastic uret...

A curable composition including a reactive monomer or oligomer with acrylate functionality, an amine, and an alkyl peroxide. The alkyl peroxide is free or substantially free of phenyl rings. The alkyl peroxide can be dilauroyl peroxide (DLP). The curable composition can also include 3,5-diethyl-1,2-dihyrdro-1-phenyl...

A tension-torsion strap includes a first spindle and a second spindle, which are spaced apart from each other, such that the first and second spindles are positioned at opposite ends of the tension-torsion strap, a winding formed of a filament wrapped about the first and second spindles a plurality of turns, the win...

A two-part metal protection coating comprising: an aqueous metal treatmentconversion coating component that comprises an admixture of an acid and acoating forming component; and an aqueous protective coating componentthat is applied over metal treated with the aqueous metal treatmentc...

The present subject matter relates to improved damping fluid mount devices systems and methods in which a damping fluid mount (100) includes an inner member (110) an elastomer section (130) that is affixed to an outer surface of the inner member (110) and a cup (200) containing viscous fluid (300). The elastomer...

A curable adhesive that is particularly well suited for use in an injection or compression molding operation. The adhesive is based on polymeric resins having carboxylic acid and acrylate ester functionality, such as grafted phenoxy resin, and further constituents such as organic carbonates, blocked isocyanates, cat...

This disclosure provides a circular force generator system (100) which incorporates a failsafe component. The failsafe component provides a brake system on the circular force generator such that the rotor of the circular force generator is rapidly brought to a stop in response to a predetermined sensor output or a m...

Compatibilizing agents for use in a wide variety of filled and unfilled liquid matrices and compositions comprising the agents are described. The compatibilizing agents can reduce the viscosity of the matrices and/or improve the stability of the matrices. Exemplary compatibilizing agents include one or more aryl sul...

Disclosed is a force feedback system for use in steer-by-wire vehicles. The force feedback system provides active tactile feedback to the vehicle operator and provides safety control over the steer-by-wire vehicle. Also disclosed is a method of providing safe return of the steering control system of a steer-by-wire ...