A shaft assembly that includes a shaft, which has a wall with an interior surface, a universal joint member, which is coupled to an end of the shaft and a balance weight that is received in the shaft and fixedly coupled to the interior surface. The balance weight includes an ultraviolet light-curable or light-cured resin.

A flame-retardant high-damping material includes 100 parts by mass of styrene elastomer; from 68 to 72 parts by mass of high-viscosity oil having a kinematic viscosity of 380 mm.sup.2/s or more at a temperature of 40° C.; from 72 to 132 parts by mass of melamine polyphosphate flame retardant; from 121 to 173 parts by mass of organic phosphinic acid metal salt flame retardant; and from 90 to 186 parts by mass of tackifying resin.

Provided is an adjusting method for a resonance frequency of a vibration isolator, the vibration isolator including first to n-th elastic member groups and/or an n+1-th elastic member group, the first to n-th elastic member groups and/or the n+1-th elastic member group being located on an xy plane of an xyz coordinate system, and an xy coordinate system of the xyz coordinate system being a coordinate system obtained by, when a tensor of inertia I with respect to an XYZ coordinate system having an origin in a center of gravity of a vibration sensing side structure or a vibration source side structure is represented as I, rotating an XY coordinate system by =tan.sup.1(2I.sub.XY/(I.sub.XXI.sub.YY)) around a Z axis, the adjusting method including, when rigidity K.sub.i of the first to n-th elastic member groups is represented as $\left[K_i\right]=\left[\begin{array}{ccc}{k}_{i\_\mathrm{xx}}& 0& 0\\ 0& k_{i\_\mathrm{yy}}& 0\\ 0& 0& k_{i\_\mathrm{zz}}\end{array}\right],$
rigidity K.sub.n+1 of the n+1-th elastic member group is represented as $ [ K n + 1 ] = [ Flame-Retardant High-Damping Material 20210087386 · 2021-03-25 · Shinya Washino A flame-retardant high-damping material includes 100 parts by mass of styrene elastomer; from 68 to 72 parts by mass of high-viscosity oil having a kinematic viscosity of 380 mm.sup.2/s or more at a temperature of 40 C.; from 72 to 132 parts by mass of melamine polyphosphate flame retardant; from 121 to 173 parts by mass of organic phosphinic acid metal salt flame retardant; and from 90 to 186 parts by mass of tackifying resin. Fluid and elastomer vibration isolator 10788095 · 2020-09-29 · Hrl Laboratories, Llc · David W. Shahan, Sloan P. Smith, Adam E. Sorensen, Casey J. Sennott, Christopher P. Henry, Geoffrey P. McKnight An isolator configured to isolate a payload from unwanted vibrations and shocks. The isolator includes a housing having a first end and a second end opposite the first end, a primary chamber defined in the housing, a backpressure chamber defined in the housing, a conduit placing the primary chamber in fluid communication with the backpressure chamber, a backpressure membrane in the housing proximate the first end, an elastomer dome in the housing proximate the second end, and a shaft connected to the elastomer dome. The primary chamber and the backpressure chamber are between the backpressure membrane and the elastomer dome. The shaft is configured to be connected to the payload. DAMPER MEMBER, DAMPER MECHANISM, ACTUATOR, AND DAMPER MEMBER MANUFACTURING METHOD 20200248772 · 2020-08-06 · Shoji Hinata A damper member may include a gel-like member and a first film joined to a first surface of the gel-like member in a thickness direction, in which a side surface of the gel-like member located between a second surface opposite to the first surface of the gel-like member in the thickness direction and the first surface is opened. Bump Stop 20200086708 · 2020-03-19 · William Cervantes Provided herein is a bump stop including a cylindrical body, a cylindrical shaft positioned within the cylindrical body and axially aligned with the cylindrical body, a top retainer and a bottom retainer each connected to an end of the cylindrical body. The cylindrical shaft protrudes through the bottom retainer. A spring is connected to one end of the cylindrical shaft and is connected to the top retainer. A shear thickening fluid disposed in the cylindrical body, between the cylindrical body and the cylindrical shaft. The cylindrical shaft includes an obstruction perpendicular to an axis of the cylindrical shaft, and the obstruction and the shear thickening fluid affect control of movement of the cylindrical shaft under impact. GAS PRESSURE SPRING COMPRISING AN EXPANDING WAX, DRIVE SYSTEM COMPRISING THE GAS PRESSURE SPRING 20240026199 · 2024-01-25 · Ulrich Probst, Alexander Reiser, Martin Schleich, Felix Beib A gas pressure spring is provided including an expanding wax as a compensating medium for reducing a temperature dependency of a spring force of the gas pressure spring in an operating temperature range of the gas pressure spring spanning a minimum temperature of 40 C. to +10 C. up to a maximum temperature of +40 C. to +100 C. The expanding wax includes at least one liquid phase and at least one solid phase in the entire operating temperature range, the expanding wax comprising a number of primary alcohols. Also provided is a drive system for a flap including a gas pressure spring for supporting the flap, and an electromechanical drive for driving the flap. Bellows accumulator, in particular pulsation damper 10584759 · 2020-03-10 · HYDAC TECHNOLOGY GMBH · Herbert BALTES A bellows accumulator, in particular a pulsation damper, includes a bellows (3) arranged in an accumulator housing (1) and separating two media chambers (27, 28) from each other. Bellows folds (19) of the bellows can be moved at least partially along the inner wall (35) of the accumulator housing (1). The outside diameter of the bellows folds (19) is selected to be slightly smaller than the associated diameter of the inner wall (35) of the accumulator housing (1) in such a way that spaces (37, 41) are formed, which spaces together form a hydraulic damper for at least one medium. Load limiting seatbelt retractor 10562488 · 2020-02-18 · Ford Global Technologies, Llc · Mohammed Omar Faruque, James Chih Cheng, Robert William McCoy, Saeed David Barbat, Dean M. Jaradi A seatbelt retractor includes a base, a spool, a cylinder and a cylinder lock. The spool is rotatably coupled to the base and has a piston portion. The cylinder is engaged with the piston portion and therewith defines a first chamber. The piston portion is movable from a first position yielding a first chamber volume to a second position yielding a second chamber volume. The cylinder lock in a first condition rotatably fixes the cylinder to the base. Damping fluid is disposed in the chamber. $