Telescopic upright for golf caddy umbrella has locking diaphragm to engage inner tube and hold it in position

摘要

The telescopic upright for a golf caddy umbrella has an outer tube (3) and an inner tube (1). The inner tube can be positionably fixed by a locking membrane (4) which is hydraulically or pneumatically operated. The membrane can be replaced by a flexible hose section or piston. The assembly can be mounted on a ball joint.