A frame assembly supporting an overhead door has a horizontal header connected to upright columns or posts with splice assemblies. Fasteners mounted on the columns cooperate with retainers on the splice assemblies to position and connect the columns to the header. Hinge assemblies pivotally mount the door on the header for movement between open and closed positions.

A frame assembly supporting an overhead door has a horizontal header connected to upright columns or posts with splice assemblies. Fasteners mounted on the columns cooperate with retainers on the splice assemblies to position and connect the columns to the header. Hinge assemblies pivotally mount the door on the header for movement between open and closed positions.

A frame for supporting a door has a horizontal header connected to tripod legs with splice assemblies. Each tripod leg has two upright columns connected to an upright I-bar. The splice assemblies are fastened to the upright columns.

An overhead door frame assembly has a horizontal header connected to tripod legs with splice assemblies. Each tripod leg has two upright columns connected to an upright I-bar. One of the splice assemblies is fastened to each upright column. Hinges pivotally mount an overhead door to the header to allow hydraulic cylinders to move the overhead door to an open position and a closed position.

A device. The device includes a shaft having a longitudinal axis, a first end, and a second end. The device also includes a connector attached to the first end of the shaft. The device also includes a rod connected to the shaft. The rod comprises a third end and a fourth end. The third end is connected to the second end of the shaft. The rod is about parallel to the longitudinal axis. The device also includes a spring surrounding the rod. The spring is compressible or extendable along the longitudinal axis. The device also includes a stop connected to the rod at a position distal to the spring. The stop resists longitudinal compression or extension of the spring.

A bi-fold door assembly has an upper door section and a lower door section connected by a hinge such that the upper and lower door sections are movable between a closed position spanning the door opening and an open position in which the upper door section is oriented transversely to the door opening and the lower door section is folded upwardly towards an inner side of the upper door section. A truss supported along the inner side of one of the upper and lower door sections is movable relative to the door sections between a first position in which the truss stiffens the door assembly against bending corresponding to the closed position of the door sections and a second position in which the truss member is reduced in overall width relative to said one of the upper and lower door sections in a normal direction to the door sections.

A device. The device includes a shaft having a longitudinal axis, a first end, and a second end. The device also includes a connector attached to the first end of the shaft. The device also includes a rod connected to the shaft. The rod comprises a third end and a fourth end. The third end is connected to the second end of the shaft. The rod is about parallel to the longitudinal axis. The device also includes a spring surrounding the rod. The spring is compressible or extendable along the longitudinal axis. The device also includes a stop connected to the rod at a position distal to the spring. The stop resists longitudinal compression or extension of the spring.

A frame assembly supporting an overhead door has a horizontal header connected to upright columns or posts with splice assemblies. Fasteners mounted on the columns cooperate with retainers on the splice assemblies to position and connect the columns to the header. Hinge assemblies pivotally mount the door on the header for movement between open and closed positions.

A frame assembly supporting an overhead door has a horizontal header connected to upright columns or posts with splice assemblies. Fasteners mounted on the columns cooperate with retainers on the splice assemblies to position and connect the columns to the header. Hinge assemblies pivotally mount the door on the header for movement between open and closed positions.

A frame assembly supporting an overhead door has a horizontal header connected to upright columns or posts with splice assemblies. Fasteners mounted on the columns cooperate with retainers on the splice assemblies to position and connect the columns to the header. Hinges pivotally mount the door on the header for movement between open and closed positions. Linear actuators connected to the frame assembly and door are operable to move the door between door open and door closed positions.