Clamp for mounting a device to a tubular

A clamp for mounting a lighting fixture to a structural tubular having a central axis, the clamp comprising:

• a main body adapted to be secured to the lighting fixture and having a pivot axis adjacent one end thereof and a stop surface adjacent an opposing end thereof;
• a jaw mounted to the main body and pivotably movable thereto about the pivot axis of the main body from an opened position such that the clamp may receive the structural tubular to a closed position such that the main body in combination with the jaw encircle the structural tubular:
• one of the main body or the jaw having an internal gripping surface for engagement with the structural tubular;
• the jaw further movable with respect to the main body along the pivot axis from an unlocked position wherein the jaw is axially spaced from the main body to a locked position wherein the jaw is substantially aligned along the pivot axis with the main body;
• a biasing member for biasing the jaw toward the main body in a direction along the pivot axis and to its locked position;
• a lever arm secured to the jaw for engagement with the structural tubular to rotate the jaw from its opened position to its closed position;
• a locking surface secured to the jaw for engagement with the stop surface when the jaw is in its locked position, thereby preventing the jaw from pivotably moving to its opened position;
• and
• a bolt threadably secured to the other of the main body or the jaw for engaging the structural tubular and bringing the internal gripping surface into gripping engagement with the structural tubular when the jaw is in its locked position.

A clamp for mounting a device to a tubular, the clamp comprising:

• an interconnection member having a locking slot therein;
• a mating member mounted to the interconnection member and pivotably movable with respect thereto about a pivot axis from an opened position such that the clamp may receive the tubular to a closed position such that the interconnection member in combination with the mating member encircle the tubular;
• one of either the mating member or interconnection member having a gripping surface for gripping engagement with the tubular;
• the mating member mounted to the main body such that the mating member is further movable with respect to the interconnection member in a direction along the pivot axis from an unlocked position wherein the mating member is spaced from the interconnection member to a locked position wherein the mating member and interconnection member are within the same radial plane with respect to the pivot axis;
• a lip secured to the mating member for fitting within the locking slot in the interconnection member when the mating member is in its locked position, thereby preventing the mating member from pivotally moving to its opened position;
• and
• a securing member carried by and selectively movable with respect to the other of the mating member or the interconnection member for engaging the tubular and bringing the gripping surface into engagement with the tubular when the mating member is in its locked position.

A clamp for mounting a device to an elongate structural member, the clamp comprising:

• a main body securable to the device and having a pivot axis and a first locking member;
• a jaw mounted to the main body and pivotally movable with respect thereto about the pivot axis of the main body from an opened position such that the clamp may receive the structural member to a closed position such that the main body in combination with the jaw encircle the structural member;
• one of either the main body or the jaw having an internal surface for engagement with the structural member;
• the jaw further movable with respect to the main body along the pivot axis from an unlocked position wherein the jaw is spaced from the main body to a locked position wherein the jaw is substantially aligned along the pivot axis with the main body;
• a second locking member on the jaw cooperative with the first locking member when the jaw is in its locked position to prevent the jaw from pivotally moving to its opened position;
• resilient biasing means cooperative between said main body and said jaw for urging said jaw axially along the pivot axis to its locked position;
• abutment means cooperative between said main body and said jaw preventing said jaw from moving axially along said pivot axis when the jaw is in its locked position;
• and
• a lever arm secured to the jaw for engagement with the structural member to rotate the jaw from its opened position to its closed position.