Pipe joints or couplings – Vacuum cleaner type
Patent
1977-07-07
1978-09-19
Callaghan, Thomas F.
Pipe joints or couplings
Vacuum cleaner type
285317, 285DIG22, F16L 3708
Patent
active
041149270
ABSTRACT:
A wand assembly for a vacuum cleaner comprised of a pair of tubes, one of which is adapted to be telescopically fit into the other. The tubes are held together by a button resiliently biased to extend through alignable holes in the tubes. The resilient biasing of the button is provided by a spring within the inner tube and affixed to the inner walls of the inner tube at a pair of positions longitudinally spaced on opposite sides of the hole through which the button extends.
REFERENCES:
patent: 2102802 (1937-12-01), Lofgren
patent: 2582446 (1952-01-01), Martinet
patent: 3164351 (1965-01-01), Rembowski
patent: 3214187 (1965-10-01), Fuerst
patent: 3950014 (1976-04-01), Doubleday
Callaghan Thomas F.
Miller Alfred E.
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