Reservoir and fluid product dispenser with safe unscrewing

Details Reservoir and fluid product dispenser with safe unscrewing Reservoir and fluid product dispenser with safe unscrewing

2005-09-27

2005-09-27

Mancene, Gene (Department: 3754)

Dispensing

With discharge assistant

With material supply container and discharge assistant with...

C215S342000, C220S202000

Reexamination Certificate

active

06948640

ABSTRACT:
A fluid reservoir (1) having a neck (11) defining a substantially cylindrical drum (12) and an opening (110), said neck being externally provided with an external thread (13) serving to co-operate with a ring (21) internally provided with an internal thread (210) having the same pitch as the external thread (13) of the neck, the external thread (13) being provided with locking means (16) to prevent the ring from being unscrewed, said locking means comprising at least one projection (16) situated under the external thread (13) on the path of the internal thread (210), said fluid reservoir being characterized in that said projection (16) comprises a ramp (161) on which the internal thread (210) engages during tightening, and a locking edge (162) at the end of the ramp (161) defining therebeyond a locking wall (163) against which the internal thread (210) abuts in the event of unscrewing.

REFERENCES:
patent: 3339770 (1967-09-01), Weigand
patent: 3682345 (1972-08-01), Baugh
patent: 3952899 (1976-04-01), Cooke
patent: 4034882 (1977-07-01), Wright
patent: 4320844 (1982-03-01), Cooper
patent: 5845798 (1998-12-01), Carrier
patent: 6123212 (2000-09-01), Russell et al.

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