Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Handle – handle component – or handle adjunct – Luggage-type
Patent
1993-03-29
1994-11-29
Larson, Lowell A.
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Handle, handle component, or handle adjunct
Luggage-type
280 47315, 403109, 403377, B62B 100
Patent
active
053677439
ABSTRACT:
A telescopic handle has a first tube with two slots and a second tube with two holes. A locking element has a first section attached in the first tube and a larger second section sited in the second tube. The second section of the locking element has two holes. A passage with a first section and a larger second section is formed through the locking element. A plunger has a first section insertable through the first section of the passage, a second section with a cross-sectional profile marginally smaller than that of the second section of the passage and a third section with a cross-sectional profile smaller than that of the second section of the passage. A spring is compressed between the second section of the plunger and a nut attached to the third section of the plunger. A pulling element links a bolt, insertable through the slots, to the first section of the plunger. Two balls are sited in the holes formed through the locking element. The plunger is spring-biased so that the second section of the plunger aligns with the holes formed through the locking element for pushing the balls partially into the holes formed in the second tube, thereby retaining the first tube relative to the second tube. The plunger is moveable, by pulling the bolt, so that the third section of the plunger aligns with the holes formed through the locking element for allowing the balls to be pushed partially into the holes formed through the locking element, thereby allowing the first tube to slide relative to second tube.
REFERENCES:
patent: 3038567 (1962-06-01), Poddig et al.
patent: 4577877 (1986-03-01), Kassai
patent: 4708297 (1987-11-01), Boers
patent: 4733882 (1988-03-01), Kassai
patent: 5127664 (1992-07-01), Cheng
Gurley Donald M.
Larson Lowell A.
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