Telescopic electric vacuum cleaner suction pipe

摘要

The suction pipe has a spring-loaded ratchet device between the inner and outer telescopic sleeves (2,3), cooperating with ratchet recesses (4) in the outside of the inner sleeve (3) for maintaining the required adjustment. The ratchet device is released by a manually-operated slider (6) and uses a pair of axially spaced ratchet elements (14,15), angled in opposite directions relative to the longitudinal axis (9) of the outer sleeve , for engaging in 2 successive ratchet recesses.