Vacuum relief device

Details Vacuum relief device Vacuum relief device

2008-05-27

2008-05-27

Shaver, Kevin (Department: 3754)

Dispensing

Resilient wall

With flow controllers or closures

C222S457000, C222S587000, C222S207000, C222S185100

Reexamination Certificate

active

07377405

ABSTRACT:
Liquid soap dispensers including a vacuum relief valve which comprises an enclosed chamber having an air inlet open to the atmosphere and a liquid inlet in communication with liquid in the reservoir and in which the liquid inlet opens to the chamber at a height below a height at which the air inlet opens to the chamber. The vacuum relief valve permits relief of vacuum from the reservoir without moving parts or valves.

REFERENCES:
patent: 517305 (1894-03-01), Schlueter
patent: 878750 (1908-02-01), Schmidt
patent: 1228836 (1917-06-01), Schulse
patent: 1236912 (1917-08-01), Cooper
patent: 1319376 (1919-10-01), Cooper
patent: 1886288 (1932-11-01), McDow
patent: 2387922 (1945-10-01), McBrien
patent: 2680010 (1954-06-01), Dubay
patent: 2949212 (1960-08-01), Watson
patent: 4324349 (1982-04-01), Kaufman
patent: 4516697 (1985-05-01), Dreps et al.
patent: 4635828 (1987-01-01), Kaufman
patent: 4930668 (1990-06-01), Krall
patent: 4957218 (1990-09-01), Ford, Jr.
patent: 5060830 (1991-10-01), Krall
patent: 5165577 (1992-11-01), Ophardt
patent: 5282552 (1994-02-01), Ophardt
patent: 5329117 (1994-07-01), Galili
patent: D350665 (1994-09-01), Ophardt
patent: 5373970 (1994-12-01), Ophardt
patent: 5427279 (1995-06-01), Kaufman
patent: 5431309 (1995-07-01), Ophardt
patent: 5489044 (1996-02-01), Ophardt
patent: D378035 (1997-02-01), Ophardt
patent: 5676277 (1997-10-01), Ophardt
patent: 5836482 (1998-11-01), Ophardt et al.
patent: 5904272 (1999-05-01), Kaufman
patent: 5960991 (1999-10-01), Ophardt
patent: 5975360 (1999-11-01), Ophardt
patent: 6119901 (2000-09-01), Hanna
patent: 6206238 (2001-03-01), Ophardt
patent: 6343724 (2002-02-01), Ophardt et al.
patent: 6386390 (2002-05-01), Tinker
patent: 6390329 (2002-05-01), Maddox
patent: 6467651 (2002-10-01), Muderlak
patent: 6957751 (2005-10-01), Ophardt
patent: 1386152 (1972-03-01), None
patent: WO 81/01993 (1981-07-01), None

Affiliated with

Also associated with

Rating

Vacuum relief device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Vacuum relief device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vacuum relief device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2796960