Abstract: A ball valve sealing arrangement includes a ball element, and a ball seal assembly to support the ball element. The ball seal assembly includes an O-ring and a ball seat, with the ball seat having an O-ring gland in one side and a recess in an opposite side, the O-ring gland to receive the O-ring and the recess to receive the ball element, and an outer dimension of the O-ring gland being within an outer dimension of the recess.

Abstract: A hose having an asymmetrical cross-section but which exhibits symmetrical bending and crush resistance regardless of the direction of the bending and/or crushing forces exerted on the tube. The tube includes an outer wall and an inner strengthening rib which is coextruded with the outer wall, the inner rib fabricated from a material having a durometer which is at least equal to, or higher, i.e., equal or higher resistance to deflection and/or indentation, than the material out of which the outer wall is fabricated.

Abstract: A hose having an asymmetrical cross-section but which exhibits symmetrical bending and crush resistance regardless of the direction of the bending and/or crushing forces exerted on the tube. The tube includes an outer wall and an inner strengthening rib which is coextruded with the outer wall, the inner rib fabricated from a material having a durometer which is at least equal to, or higher, i.e., equal or higher resistance to deflection and/or indentation, than the material out of which the outer wall is fabricated. In one embodiment the rib defines a third lumen.

Abstract: The present disclosure generally relates to fluid sprayers and more specifically, but not by limitation, to a portable airless fluid sprayer including fluid container support features configured to accommodate fluid containers of different sizes. In one example, a fluid sprayer pump assembly is provided and includes a pump assembly housing and a fluid intake conduit configured to provide a fluid path to the pump assembly housing. The fluid sprayer pump assembly also includes a frame assembly supporting the pump assembly housing and including a plurality of fluid container support features. Each of the fluid container support features is configured to accommodate a respective fluid container such that an inlet end of the fluid intake conduit is positionable within the respective fluid container. In one example, a fluid container support feature includes a fluid container holder pivotably attached to the frame assembly and movable between first and second positions.

Abstract: In one example, a handheld fluid sprayer is provided and includes a housing, an assembly having at least one of a motor and a fluid pump, and at least one assembly support feature. The assembly is mounted to the housing with the at least one assembly support feature. The at least one assembly support feature includes a first portion having first and second opposed surfaces and a second portion having first and second opposed surfaces. The second portion extends from the first portion such that at least one of the first and second surfaces of the second portion is at least substantially orthogonal to the second surface of the first portion.

Abstract: A hand-held apparatus for spraying texture material includes a body having a handle, a texture material hopper mounted on the body, and a nozzle extending from the body for spraying texture material. The apparatus also includes an air source connection component operable to connect and disconnect a source of air to and from the body. The air source connection component comprises a first connection structure on the body that is configured to receive a corresponding second connection structure associated with the air source and secure the second connection structure to the body by rotating the second connection structure with respect to the body.

Abstract: In one example, a handheld fluid sprayer is provided and includes a housing, an assembly having at least one of a motor and a fluid pump, and at least one assembly support feature. The assembly is mounted to the housing with the at least one assembly support feature. The at least one assembly support feature includes a first portion having first and second opposed surfaces and a second portion having first and second opposed surfaces. The second portion extends from the first portion such that at least one of the first and second surfaces of the second portion is at least substantially orthogonal to the second surface of the first portion.

Abstract: A coupling mechanism in a fluid delivery system is provided. In one example, an airless fluid delivery system is provided and includes a housing including a pumping unit. The system also includes a first conduit providing a first fluid path for supplying fluid from a fluid source to the pumping unit and a second conduit providing a second fluid path for fluid between the fluid source and the pumping unit. The system also includes a coupling mechanism configured to removably couple the first and second conduits to the housing.

Abstract: A hand-held apparatus for spraying texture material includes a body having a handle, a texture material hopper mounted on the body, and a nozzle extending from the body for spraying texture material. The apparatus also includes an air source connection component operable to connect and disconnect a source of air to and from the body. The air source connection component comprises a first connection structure on the body that is configured to receive a corresponding second connection structure associated with the air source and secure the second connection structure to the body by rotating the second connection structure with respect to the body.

Abstract: A closed loop hydrostatic transmission including a pump (11) having a charge pump (23) and an assembly (25). The assembly (25) includes a pair of relief and check valve assemblies (65,67), and each one includes a check valve poppet (71) relatively fixed to a washer member (83) in the absence of high pressure. The washer member (83) moves within a bore to define a chamber (85) in which is the spring (87) biasing the check poppet (71) closed. A drain valve (97) has its inlet in fluid communication with the spring chambers (85), and in response to a predetermined input, such as an electrical input signal (101), the drain valve opens (FIG. 3), and drains the chambers (85). In this condition, both check poppets (71) open, and fluid can flow freely within the closed loop so that, for example, the vehicle may be towed a short distance, without overheating the fluid, and without the need to mechanically unseat the check valves as has been common practice.

Abstract: Disclosed are new nucleosome arrays that can be used in assays that couple the activity of a chromatin remodeling enzyme (or enzyme complex) to the activity of a restriction endonuclease to quantitatively measure the extent of "remodeling" activity exhibited by a particular remodeling enzyme or enzyme complex. Further, the new nucleosome arrays can be used in methods for screening candidate modulators, i.e., inhibitors or enhancers, of chromatin remodeling enzymes or enzyme complexes.