Abstract: Carts for transporting elongated materials and processes for making, assembling, and using same. In some examples, the carts can include a pivot assembly that pivotally connects an arm to a frame to allow the arm to move between a use position and a stored position. An arm receiver can be configured to selectively engage the first arm to selectively maintain the arm in the use position, and to selectively disengage the arm to allow the arm to be moved from the use position to the stored position. A locking pin assembly can be configured for automatic actuation to allow the arm to move from the stored position to the use position and to lock the arm in the use position without manual actuation.

Abstract: A pipe jack or jack mechanism. The jack mechanism can include a base structure that can include a substantially vertical support member and a plurality of legs angularly disposed therefrom. An elevation member can be configured to move within the substantially vertical support member. A safety ring that can be generally circular can be disposed about an outer perimeter of the elevation member and can extend outwardly therefrom. An annular lock can be adjustably disposed about the outer perimeter of the elevation member and can be positioned below the safety ring. A stop gap can be positioned between the safety ring and the annular lock. A block cap can be disposed on a bottom portion of the substantially vertical support member to prevent the elevation member from extending beyond an end of the substantially vertical support member.

Abstract: Carts for transporting elongated materials and processes for making, assembling, and using same. In some examples, the carts can include a pivot assembly that pivotally connects an arm to a frame to allow the arm to move between a use position and a stored position. An arm receiver can be configured to selectively engage the first arm to selectively maintain the arm in the use position, and to selectively disengage the arm to allow the arm to be moved from the use position to the stored position. A locking pin assembly can be configured for automatic actuation to allow the arm to move from the stored position to the use position and to lock the arm in the use position without manual actuation.