Abstract: A sensing arrangement for a relief valve having a valve body can include a valve body engagement member and a first sensor. The valve body engagement member can be secured to the valve body proximate to a valve seat of the relief valve. The first sensor can be in communication with the valve seat via the valve body engagement member. The first sensor can be configured to detect a valve event via detection of localized pressure changes at the valve seat.

Abstract: A diaphragm assembly for a pressure relief valve can include a disc guide that is configured to receive a portion of a disc holder, a bonnet adapter, and a diaphragm that is clamped at an outer edge between the disc guide and the bonnet adapter. The diaphragm assembly can be positioned between a bonnet of the pressure relief valve and a valve body of the pressure relief valve to convert the pressure relief valve to a backpressure-balanced pressure relief valve by counterbalancing a backpressure that acts upon the disc holder.

Abstract: A helmet visor system may include a helmet shaped to accommodate a headset, a visor lens and a visor apparatus to pivotally move the visor lens between a stored position and a deployed position. The deployed position may be defined as a majority of the visor lens being extended from the helmet, and the stored position may be defined as the majority of the visor lens being occluded by the helmet within an interior of the helmet. The visor lens may be pivotally moveable between the stored position and the deployed position so as not to interfere with the headset.

Abstract: A spring-operated relief valve can include a biasing assembly, a valve inlet, a valve seat, and a disc assembly that is biased toward the valve seat by the biasing assembly. A fluid guide, such as a groove or chamber, can be formed at the interface between the valve seat and the disc assembly. The fluid guide can be configured to direct fluid that flows across the valve seat to provide an upward force on the disc assembly during a relief event.

Abstract: An illumination system can be configured for use with a liquid level gauge. A mounting bracket can be configured to secure a LED assembly to a frost-proof extension of the liquid level gauge, with the LED assembly disposed adjacent to a second edge face of the frost-proof extension that is opposite a liquid tube. The LED assembly can be thereby configured to illuminate the liquid tube via the second edge face of the frost-proof extension.

Abstract: A back pressure balanced relief valve can include a piston, a pressure balancing device, and a pressure sensor. A pressure chamber can be created between the pressure balancing device and the piston. The pressure sensor can be configured to monitor the pressure in the pressure chamber for indications of a potential failure of the balancing device.

Abstract: A spring-operated relief valve can include an adjustable main spring to bias the valve closed and a load cell that is configured to measure a force exerted by the main spring. Measurements from the load cell can be used to determine a set or crack pressure in the spring-operated relief valve, and to monitor operation of the spring-operated relief valve.

Abstract: A pilot-operated relief valve assembly can include a relief valve, and a pressure detection assembly. A valve lift factor or indicator of relief flow can be determined based on pressure measurements gathered by the pressure detection assembly.

Abstract: A headborne attachment platform includes multiple rigid plates and straps of connecting material connecting the rigid plates in an assembly at independently selectable and pre-set distances apart from each other. The assembly of rigid plates is shaped and connected to sit adjacent to, and surround, the bone regions of a wearer's skull, and define an overall headgear shape and contour. The straps are more flexible than the rigid plates in directions perpendicular to the thickness of the straps, and the straps are inelastic in a direction of a length thereof. A tightening mechanism is configured to adjust a circumference of a headband region, and the rigid plates have mounting features configured to mount an outer helmet shell and/or a headborne device. The rigid plates are sufficiently rigid to support and maintain their three-dimensional shape when subjected to forces exerted upon them by the outer helmet shell or headborne device.

Abstract: A clamp assembly to secure a yoke to a valve body of a knife gate valve is provided. The clamp assembly can include a bolt that is configured to extend through a first bushing, a first spring member, a first side wall of the yoke, the valve body, a second side wall of the yoke, a second spring member, and a second bushing. The clamp assembly can be configured to pin the yoke to the valve body, apply a pressure-containing preload to the valve body via the first and second bushings, and compress the first spring member between the first bushing and the first side wall of the yoke and the second spring member between the second bushing and the second side wall of the yoke.

Abstract: A flow arrangement for a pressure relief valve assembly can include a bypass flow path extending from a pressure source to a dome of a relief valve. The bypass flow path can include a valve that is configured to open and close the bypass flow path based on pressure at the pressure source or the dome, or a pressure difference between the pressure source and the dome.

Abstract: The present invention has an object to provide a skin anti-aging agent, an agent for regulating expression of anti-aging related gene, and a cosmetic product comprising the anti-aging agent or the agent for regulating expression of anti-aging related gene which are very safe and can be used reliably for a long term. The skin anti-aging agent, the agent for regulating expression of anti-aging related gene, and the cosmetic product comprising the anti-aging agent or the agent for regulating expression of anti-aging related gene of the present invention comprise a special low molecular DNA and a soybean extract, preferably a soybean sprout extract, as active ingredients. These active ingredients have activating actions on the function of the dermal fibroblast and are hence expected to prevent or improve the skin aging such as the reduction of skin firmness and elasticity, wrinkles and sagging.

Abstract: A flow arrangement for a control valve can include a plurality of flow-control components that are movable relative to each other and that define at least part of a flow path from a pressure source to a dome of a pressure relief valve. The flow-control components can be movable relative to each other in response to system pressure to selectively increase or decrease the flow capacity of the flow path. In some cases, flow capacity can be increased or decreased during initial loading of the dome, at low pressures, or at higher pressures.

Abstract: Embodiments of the invention provide a knife gate valve for flow along a flow path. The knife gate valve can include a body structure that includes a gate passage, a gate disposed to move within the gate passage between open and closed positions to selectively open or close a fluid aperture, and a gate seat configured to engage a free end and lateral edges of the gate. A transverse element can be formed from resilient material and can extend laterally across the gate passage to form a seal with a first side of the gate and with the gate seat.

Abstract: A pilot-operated relief valve assembly can include a relief valve, and a pressure detection assembly. A valve lift factor or indicator of relief flow can be determined based on pressure measurements gathered by the pressure detection assembly.

Abstract: A clamp assembly to secure a yoke to a valve body of a knife gate valve is provided. The clamp assembly can include a bolt that is configured to extend through a first bushing, a first spring member, a first side wall of the yoke, the valve body, a second side wall of the yoke, a second spring member, and a second bushing. The clamp assembly can be configured to pin the yoke to the valve body, apply a pressure-containing preload to the valve body via the first and second bushings, and compress the first spring member between the first bushing and the first side wall of the yoke and the second spring member between the second bushing and the second side wall of the yoke.

Abstract: A fluid flow control device includes a valve body forming a channel defining a fluid flow path extending from an inlet to an outlet, a shaft having a first portion and a second portion, a flow control member coupled to the first portion of the shaft, and a bearing comprising an elongated body having a first end, a second end, an inner surface defining an interior volume, and an outer surface. The bearing is dimensioned to accommodate the shaft in the interior volume and includes at least one opening extending between the inner surface and the outer surface and at least one elongated channel formed on the outer surface. The elongated channel extends a length between the first end and the second end of the elongated body.

Abstract: The apparatus may include a ridge member, a first arm rotatably coupled to the ridge member and extending outward, relative to the ridge member, in a first plane angled relative to a first pitch of a roof structure. Also, the apparatus may include a second arm rotatably coupled to the ridge member and extending outward, relative to the ridge member, in a second plane angled relative to a second pitch of the roof structure. The ridge member may be positioned at an apex between the first pitch and the second pitch along a ridge of the roof structure. Further, materials for installation may be placed on at least one of the first arm and the second arm positioned between the roof structure and the materials. Additionally, the apparatus may include a load arm coupled at each respective end portion of the first arm and the second arm.

Abstract: Reusable chopsticks that are foldable into a compact configuration for storage and easily transportable in a storage case. The chopsticks each comprise a rigid external structure and at least one flexible internal member that is foldable to a compact configuration for storage. In a folded configuration, the reusable chopsticks have a significantly reduced length of approximately one-half to one-fourth of their extended length when in use. The external structure of the chopstick is preferably formed of multiple rigid segments connected by the flexible internal member(s) in the extended configuration during use as chopsticks. A storage case is provided to store the chopsticks in the folded configuration in a compact form.