Abstract: A plural component mixing system includes an automatic balance feature to balance the pressure of two or more components as they are mixed. The pressures or flow rates of the two components are monitored. If there is a difference in pressure or flow rate greater than a specified amount, a bleed valve is opened for a short period of time to balance the flows. A computer with a touch screen is used to set the pressure and flow rate differences that trigger the bleed, and to set the time period for the bleed.

Abstract: A plastic window frame trim is for installation of a window in a corrugated metal building wall having a cut opening with a top edge, bottom edge, and side edges, each of the edges being backed by framing members. The window frame trim includes: a frame header J-channel with a flange; a frame footer J-channel with a flange; a pair of nailing fins; and fasteners. The trim header J-channel, footer J-channel, and nailing fins are attached to the window frame. The window frame is lifted so frame header J-channel flange slides between the top edge of the metal building wall and a framing member at the top of the cut opening. The window is lowered so footer J-channel flange slides between the bottom edge of the metal building wall and a framing member at the bottom of the cut opening so that window frame rest on the window sill. Fasteners attach the window frame to the framing members through the metal building wall. Trim caps snap over the nailing fins to finish the trimmed window.

Abstract: A plastic window frame trim is for installation of a window in a corrugated metal building wall having a cut opening with a top edge, bottom edge, and side edges, each of the edges being backed by framing members. The window frame trim includes: a frame header J-channel with a flange; a frame footer J-channel with a flange; a pair of nailing fins; and fasteners. The trim header J-channel, footer J-channel, and nailing fins are attached to the window frame. The window frame is lifted so frame header J-channel flange slides between the top edge of the metal building wall and a framing member at the top of the cut opening. The window is lowered so footer J-channel flange slides between the bottom edge of the metal building wall and a framing member at the bottom of the cut opening so that window frame rest on the window sill. Fasteners attach the window frame to the framing members through the metal building wall. Trim caps snap over the nailing fins to finish the trimmed window.

Abstract: A plastic window frame trim is for installation of a window in a corrugated metal building wall having a cut opening with a top edge, bottom edge, and side edges, each of the edges being backed by framing members. The window frame trim includes: a frame header J-channel with a flange; a frame footer J-channel with a flange; a pair of nailing fins; and fasteners. The trim header J-channel, footer J-channel, and nailing fins are attached to the window frame. The window frame is lifted so frame header J-channel flange slides between the top edge of the metal building wall and a framing member at the top of the cut opening. The window is lowered so footer J-channel flange slides between the bottom edge of the metal building wall and a framing member at the bottom of the cut opening so that window frame rest on the window sill. Fasteners attach the window frame to the framing members through the metal building wall. Trim caps snap over the nailing fins to finish the trimmed window.

Abstract: A plastic window frame trim is for installation of a window in a corrugated metal building wall having a cut opening with a top edge, bottom edge, and side edges, each of the edges being backed by framing members, the window having an accessory groove. The window frame trim includes: a frame header J-channel with a flange; a frame footer J-channel with a flange; a pair of nailing fins; and fasteners. The trim header J-channel, footer J-channel, and nailing fins are attached to the window at the accessory groove on the window frame. The window frame is lifted so frame header J-channel flange slides between the top edge of the metal building wall and a framing member at the top of the cut opening. The window is lowered so footer J-channel flange slides between the bottom edge of the metal building wall and a framing member at the bottom of the cut opening so that window frame rest on the window sill. Fasteners attach the window frame to the framing members through the metal building wall.

Abstract: An animal husbandry tunnel door with adjoining extrusions for closing a tunnel ventilation opening typically in a broiler house has opposing faces with top, bottom and side edges. The faces sandwich an insulation layer. The adjoining extrusions have a first door top, bottom and side extrusion, along with a second door side edge extrusion. The first door top, bottom and side edge extrusions each have parallel inner prongs with barbs and adjacent parallel outer flanges forming two slots therebetween for receiving the top, bottom and side edges of the opposing door faces as the inner prongs with barbs pass into the insulation and are held thereat. The second door side edge extrusion has parallel inner prongs adjacent parallel outer flanges forming two slots therebetween for receiving the other side face edges as the inner prongs with barbs pass into the insulation and are held thereat.

Abstract: A plastic window frame trim is for installation of a window in a corrugated metal building wall having a cut opening with a top edge, bottom edge, and side edges, each of the edges being backed by framing members. The window frame trim includes: a frame header J-channel with a flange; a frame footer J-channel with a flange; a pair of nailing fins; and fasteners. The trim header J-channel, footer J-channel, and nailing fins are attached to the window frame. The window frame is lifted so frame header J-channel flange slides between the top edge of the metal building wall and a framing member at the top of the cut opening. The window is lowered so footer J-channel flange slides between the bottom edge of the metal building wall and a framing member at the bottom of the cut opening so that window frame rest on the window sill. Fasteners attach the window frame to the framing members through the metal building wall. Trim caps snap over the nailing fins to finish the trimmed window.

Abstract: A plastic window frame trim is for installation of a window in a corrugated metal building wall having a cut opening with a top edge, bottom edge, and side edges, each of the edges being backed by framing members, the window having an accessory groove. The window frame trim includes: a frame header J-channel with a flange; a frame footer J-channel with a flange; a pair of nailing fins; and fasteners. The trim header J-channel, footer J-channel, and nailing fins are attached to the window at the accessory groove on the window frame. The window frame is lifted so frame header J-channel flange slides between the top edge of the metal building wall and a framing member at the top of the cut opening. The window is lowered so footer J-channel flange slides between the bottom edge of the metal building wall and a framing member at the bottom of the cut opening so that window frame rest on the window sill. Fasteners attach the window frame to the framing members through the metal building wall.

Abstract: The buckle includes a first and a second clamp member positioned substantially parallel to one another. End members are provided at the opposite ends of the first clamp member. The buckle includes a set of pliable wall directly interconnecting one of the end members to the second clamp member. The pliable walls are subjected to a permanent plastic deformation when the second clamp member is moved closer to the first clamp member.

Abstract: An animal husbandry tunnel door with adjoining extrusions for closing a tunnel ventilation opening typically in a broiler house has opposing faces with top, bottom and side edges. The faces sandwich an insulation layer. The adjoining extrusions have a first door top, bottom and side extrusion, along with a second door side edge extrusion. The first door top, bottom and side edge extrusions each have parallel inner prongs with barbs and adjacent parallel outer flanges forming two slots therebetween for receiving the top, bottom and side edges of the opposing door faces as the inner prongs with barbs pass into the insulation and are held thereat. The second door side edge extrusion has parallel inner prongs adjacent parallel outer flanges forming two slots therebetween for receiving the other side face edges as the inner prongs with barbs pass into the insulation and are held thereat.

Abstract: A door and frame combination for an air handling unit consists of a frame, a hinged door with a hollow core filled with insulating material, and a gasket having a flexible gasket wall with anti-roll extensions. The gasket may have a friction-reducing material on its surface to assist in preventing roll-over by the closing door. Optional thermal pockets in the door and frame are filled with high-density polyurethane to provide further protection against air leakage.

Abstract: A pressure relief door system for use in a duct for relieving positive or negative pressure within the duct includes a frame to be mounted in the duct; a gasket in the frame; a hinged door mounted on the frame and sealing against the gasket; and an adjustable pressure relief mechanism normally holding the hinged door against the gasket and permitting the hinged door to open in response to a positive or negative pressure change. The frame and door can be mounted such that the door opens either outwardly from the duct in response to excess positive pressure or inwardly into the duct in response to excess negative pressure. The adjustable pressure relief mechanism may be magnetic.

Abstract: An apparatus for retrofitting a vehicle for removing spent oil from an oil pan reservoir installed in an access aperture located in a floor bottom of the oil pan reservoir. The device includes a low profile quick connect nipple having a first end threadably sealing into the access aperture and a second end releasably engagable with a mating fitting positioned on an externally located fluid delivery device and further having a fluid tight closure when the second end is disengaged from the fluid delivery device. The apparatus has a center throughbore having a movable member therein. The movable member includes a stem and a circular flared portion. A retainer clip is securely attached to an upper end of the stem. A ring configuration has a center through aperture for receiving the stem and radial connections extending to the periphery of the throughbore. The ring configuration centers the stem and defines a stop for the movable member when the retainer clip contacts the ring configuration.

Abstract: A sawmill includes a band saw mounted on a trolley. The trolley carries the band saw back and forth across the length of a log to cut it into boards. A log supporting table is adjustable to accomodate logs of various size. The trolley rails descend incrementally after each cut to reposition the band saw blade for the next cut. The length of each increment, or board thickness, is user selectable by way of an indexable detent bar and limit switch combination. The thickness across the board is held uniform by a pressurized bellows that maintains the proper blade strain in the band saw blade.

Abstract: A compound bow is disclosed that is fully adjustable for draw weight, draw length and let-off. The disclosed bow includes a frame assembly, a pair of bow limbs adjustably coupled at a first end thereof to the frame assembly to provide adjustment of the draw weight of the compound bow, an eccentric wheel coupled to a second end of each of the bow limbs, each eccentric wheel having a top cable travel groove and a bottom cable travel groove, wherein the bottom cable travel groove includes a let-off channel and a bow grip assembly coupled to the frame assembly. The frame assembly is mounted via a pivot pan assembly to draw length bar so that the draw length of the bow is fully adjustable.