A downhole perforation system includes a ballistic device having an first end and a second end, the ballistic device carrying an explosive material. The system further includes a shock absorption device coupled to at least one of the first or second end of the ballistic device and configured to absorb at least a portion of impact energy produced from detonation of the explosive material. The shock absorption device includes a shock absorption module which includes a viscoelastic body and a rigid structure molded within the viscoelastic body. The rigid structure is configured to break or deform when impacted by a threshold amount of impact energy. Broken or deformed portions of the rigid structure are contained within the viscoelastic body.

A bumper spring assembly having a one piece mandrel including an integral head piece is further configured with a cage assembly retained on the mandrel with a cage nut locked to the mandrel to obviate the need for pins, set screws, and the like, to provide a more robust assembly. In two embodiments the cage nut is locked to the mandrel in a swaging operation. Improved flow of fluids through and around the bumper spring assembly are also provided.

A bumper spring assembly having a one piece mandrel including an integral head piece is further configured with a cage assembly retained on the mandrel with a cage nut locked to the mandrel to obviate the need for pins, set screws, and the like, to provide a more robust assembly. In two embodiments the cage nut is locked to the mandrel in a swaging operation. Improved flow of fluids through and around the bumper spring assembly are also provided.

The present invention relates to a construction damper with at least one at least in regions ladder-like constructed thrust damping part which has a spatial structure wherein at least two transverse beams are connected in two different alignments to at least two longitudinal beams and wherein the damping effect is achieved by thrust force damping in the transverse beams.

A double-shockproof spring mechanism, a cam ejection mechanism and a single-side guide rail ejection bin, which relates to the technical field of pet snack device components. The double-shockproof spring comprises a guide rod and a first elastic element, a slider and a second elastic element which are sleeved on the guide rod in sequence, wherein the slider is slidable along the guide rod under the action of the first elastic element and the second elastic element; the cam ejection mechanism comprises a power device, an ejection cam, a pushing plate and a double-shockproof spring mechanism; and the single-side guide rail ejection bin comprises an ejection bin body and a cam ejection mechanism mounted on the ejection bin body; the single-side guide rail ejection bin of the present invention not only can project pet snacks, but also project periodically and continuously.

An isolation coupler for coupling a functional element to a support structure includes a first bracket. The first bracket includes a number of first-bracket sides. The number of first-bracket sides forms a closed polygonal shape, in plan view. The isolation coupler further includes a number of isolators coupled to each one of the first-bracket sides. The isolation coupler also includes a second bracket. The second bracket includes a number of second-bracket sides. The second bracket sides are coupled to the isolators. The number of second-bracket sides is equal to the number of first-bracket sides and forms the closed polygonal shape, in plan view. The isolators separate each one of the first-bracket sides from a corresponding one of the second-bracket sides to attenuate a load transferred from the first bracket to the second bracket.

An isolation coupler for coupling a functional element to a support structure includes a first bracket. The first bracket includes a number of first-bracket sides. The number of first-bracket sides forms a closed polygonal shape, in plan view. The isolation coupler further includes a number of isolators coupled to each one of the first-bracket sides. The isolation coupler also includes a second bracket. The second bracket includes a number of second-bracket sides. The second bracket sides are coupled to the isolators. The number of second-bracket sides is equal to the number of first-bracket sides and forms the closed polygonal shape, in plan view. The isolators separate each one of the first-bracket sides from a corresponding one of the second-bracket sides to attenuate a load transferred from the first bracket to the second bracket.

Adhesive damping systems are described. A damping system for reducing the effects on a substrate caused by a disruption in the substrate environment includes an adhesive having a plurality of three-dimensional particles dispersed therein. The particles are configured to provide a controlled response to an applied force field. The system further includes a sensor which measures an amplitude and frequency spectrum of the disruption. In a use configuration, the sensor determines the amplitude and frequency spectrum of the disruption received by the substrate; and the applied force field is dependent on the amplitude and frequency spectrum of the disruption.

An apparatus for supporting a flexible conduit which includes a flexible member and a rigid member in fluid communication with the flexible member. The apparatus has a releasable connector and a shock absorber. The releasable connector has a first member and a second member. When a releasing force is applied to the flexible conduit, the releasable connector separates. The shock absorber is configured to absorb a load when the releasable connector separates. The shock absorber may include a compressible material that includes a metal, such as a metal foam or a corrugated metal sheet. The releasable connector and the shock absorber may be integrally formed together.

An anti-recoil assembly may include a housing, a shaft, and an energy attenuator. The housing generally defines a cavity, with the housing having a first end portion and a second end portion, according to various embodiments. The shaft may be at least partially disposed within the cavity, and the shaft may be configured to move within the cavity in a first direction from the first end portion to the second end portion. In various embodiments, the energy attenuator is disposed within the cavity at the second end portion. In response to movement of the shaft in the first direction, the energy attenuator is configured to inhibit the shaft from recoiling in a second direction opposite the first direction, according to various embodiments.