A hand disassembly rotational valve coupling for tool less manipulation by a user's hands and fingers using a coupling housing body defining an output seal aperture close to an output handle retention slot and slot lip, where the slot lip has a slot handle gap and an output seal retainer including a coupling handle ring with a first triangulated offset body retention ears and hand graspable handles separated by a ring handle gap for hand assembly and disassembly from the coupling housing body.

A clothes dryer exhaust vent (dryer vent) and the method of installation in a residential or commercial building exterior foundation wall, during construction of a building, to save the expense and costs of a clothes dryer exhaust vent installation after a building has been constructed, to reduce repair and additional construction costs. The dryer vent has a rigid wall mounting plate (plastic or metal) that is mounted in the construction block array of an exterior building foundation wall while the wall is under construction. The clothes dryer exhaust vent includes a clothes dryer exhaust vent tube connected through the rigid, wall mounting plate (manually removable), an exterior (outdoors) hemispherical-shaped clothes dryer vent open end cover assembly, manually removable for cleaning and removing lint, said cover assembly including a clothes dryer exhaust vent flapper valve.

A compression-type fitting for quick connection of two hoses or hose sections and pipe and hose section in-line is adapted primarily for industrial, heavy duty hoses typically in one to three inches in diameter, although not so limited. A commercial application for which the connector has shown to be particularly useful is in the media blasting industry where hoses are subject to extreme conditions and break or leak after a relatively short period of use, requiring frequent shut down and repair or replacement of the hoses.

A connector having a male component and a female component. The male component has a first tubular section, a second tubular section, and a midsection between the first tubular section and the second tubular section. The female component is connected to the second tubular section of the male component upon relative rotational movement between the male component and the female component and disconnected from the second tubular section of the male component upon relative rotational movement between the male component and the female component in a direction opposite to the direction when the male component and the female component are being connected. The female component has a bearing surface bearing against the midsection of the male component in a first position of the bearing surface and is spaced from the midsection of the male component in other positions of the female component.

A hydraulic fluid line coupling system is disclosed. The coupling may include a female fitting, a male fitting, first and second elastomeric seals between the female fitting and male fitting, and a lock nut securing the female fitting to the male fitting, and the lock nut including a plurality of threads.

A pipe fitting includes a socket that receives an end of a pipe section therein such that a gap exists between an outer surface of the pipe section and an inner surface of the socket. A pair of ports extend through the socket and are in fluid communication with the gap. A clamp secures the pipe section within the socket as a bonding agent is extruded into the gap via a port. The clamp includes a pair of arcuate segments, each having an inner circumferential wall, first and second end portions, and an elongated sealing member. Each arcuate segment includes a plurality of spring-loaded devices, each having a distal end portion extending through the inner circumferential wall that is urged into contact with the pipe section outer surface.

A connector having a male component and a female component. The male component has a first tubular section, a second tubular section, and a midsection between the first tubular section and the second tubular section. The female component is connected to the second tubular section of the male component upon relative rotational movement between the male component and the female component and disconnected from the second tubular section of the male component upon relative rotational movement between the male component and the female component in a direction opposite to the direction when the male component and the female component are being connected. The female component has a bearing surface bearing against the midsection of the male component in a first position of the bearing surface and is spaced from the midsection of the male component in other positions of the female component.

Ventilation systems are disclosed that include a base unit having a mounting platform connecting the base unit to a surface. Such base units have a base collar that extends away from the mounting platform and forms a perimeter of a opening through the base unit. Such ventilation systems include a fan unit that has a fan housing and a fan. The fan housing is configured to receive air through an inlet and expel air through an outlet, and the fan is capable of moving air from the inlet to the outlet. Such ventilation systems also include a quick connect interface that has a base feature and a fan housing feature. The base feature is integrated into the base unit, and the fan housing feature integrated into the fan unit; both are capable of detachably connecting together to secure the fan unit to the base unit.

A combined quick connector structure for fuel feed and return system may include a cover assembly; a lever mechanism along the inside walls of the fuel feed and fuel return openings of the cover assembly; a pawl and ratchet mechanism on either side of the cover assembly; a rib on either side of a connector assembly; the connector assembly with retainer elements for engine feed and engine return lines and fuel feed and return lines; actuator pads provided on the external and internal circumference of the openings of connector assembly; a locking mechanism on the inside circumference of the retainer elements for the fuel feed line and fuel return line; and a lever mechanism configured for hinging the cover assembly together with the connector assembly.

A combined quick connector structure for fuel feed and return system may include a cover assembly; a lever mechanism along the inside walls of the fuel feed and fuel return openings of the cover assembly; a pawl and ratchet mechanism on either side of the cover assembly; a rib on either side of a connector assembly; the connector assembly with retainer elements for engine feed and engine return lines and fuel feed and return lines; actuator pads provided on the external and internal circumference of the openings of connector assembly; a locking mechanism on the inside circumference of the retainer elements for the fuel feed line and fuel return line; and a lever mechanism configured for hinging the cover assembly together with the connector assembly.