Locking mechanisms for adjustable telescopic prop assemblies

An adjustable telescopic push-pull prop assembly for supporting a formwork structure, the prop assembly comprising:

• an inner tube;
• an outer tube placed concentrically with respect to the inner tube such that the inner tube is adapted to be extended out of the outer tube for adjusting a length of the prop assembly, based on dimensions of a formwork structure to be supported;
• and
• a locking mechanism for locking the inner tube with the outer tube, the locking mechanism comprising:
• a slotted prop nut having a slot and adapted to move in either direction when rotated on the outer tube having threads;
• a guiding ring adapted to be accommodated in the slot of the slotted prop nut;
• and
• a captive grooved pin assembly adapted to be accommodated in the guiding ring for locking and unlocking the inner tube and the outer tube, such that the slotted prop nut encases the guiding ring and the captive grooved pin assembly, and positioning of the captive grooved pin assembly is such that it does not hinder the rotation of the slotted prop nut.

A locking mechanism for locking and unlocking an inner tube and an outer tube of an adjustable telescopic floor prop assembly, the locking mechanism comprising:

• a guiding ring adapted to be disposed on a prop nut;
• and
• a captive grooved pin assembly adapted to be accommodated in the guiding ring for locking and unlocking the inner tube and the outer tube, wherein the captive grooved pin assembly comprises:
• a shaft portion having a pair of oppositely positioned grooves formed along a length of the shaft portion such that a profile of a first end of the shaft portion is different from a profile of a second end of the shaft portion;
• and a head portion adapted to be used to pull out the shaft portion,
• wherein the guiding ring comprises:
• a first slot having a circular profile corresponding to the profile of the second end of the shaft portion of the captive grooved pin assembly;
• and
• a second slot formed at a diametrically opposite point with respect to the first slot and having a profile corresponding to the pair of oppositely positioned grooves of the first end of the shaft portion of the captive grooved pin assembly.