An accessory mounting track provides quick and easy removable attachment and positioning of various devices. The method of attachment of devices to the accessory mounting track may be compatible with the attachment of these devices to other mounting systems, allowing the accessory mounting track to be used interchangeably with those systems.

A mounting fixture for positioning a workpiece in a desired relationship with an apparatus including an articulation joint for coupling first and second tubular members in a desired angular relationship. The articulation joint includes a first end portion clamped to an interior surface of the first tubular member and a second end portion clamped to an interior surface of the second tubular member. First and second clamping members of the articulation joint are clamped together to prevent pivotable movement between a first articulation member and a second articulation member of the articulation joint.

Solar panel array with a plurality of solar panels on support system attached at corners or off such corners for foundation structure needs and irregularities secured to roof by lag bolt with mount channel and flashing pre-assembled into mount by crimp for positive seal and mount riser height adjustable can include bilateral or quadrilateral mounts, a coupler seat to affix panel to mount and lateral movement seat for solar panel, and different clamps including wedge clamps, top restraints, lip end clamps, side support clamps, compression clamps, etc.

An accessory mounting track provides quick and easy removable attachment and positioning of various devices. The method of attachment of devices to the accessory mounting track may be compatible with the attachment of these devices to other mounting systems, allowing the accessory mounting track to be used interchangeably with those systems.

A tool holder comprises a cage assembly having a pair of axially spaced hollow members with axially aligned through openings sized for axial extension of tool handles of different sizes and shapes through both of the aligned openings. A cradle member is transversely movable in opposite directions between the hollow members toward and away from respective inwardly facing wall surfaces of the hollow members for releasably clamping tool handles extending through both aligned openings against the inwardly facing wall surfaces.

An accessory mounting track provides quick and easy removable attachment and positioning of various devices. The method of attachment of devices to the accessory mounting track may be compatible with the attachment of these devices to other mounting systems, allowing the accessory mounting track to be used interchangeably with those systems.

A two stage quick-release structure includes a first tubing member, a second tubing member, a first pivoting portion, a first buckling portion, an elastic hook and a safety fastener. When the user assembles the foldable bicycle for bicycling, the first tubing member is rotated to connect with the second tubing member via the first pivoting portion, so that the elastic hook correspondingly buckles with the first buckling portion to form a first stage buckle; then, the safety fastener is rotated to correspondingly buckle with the elastic hook so as to form a second stage buckle. The two stage buckle contributes the assembling of the foldable bicycle with ease and convenience. Furthermore, via the two stage buckle structures, the connection between the front bicycle frame body and the rear bicycle frame body are tightly secured.