Annular foam seal

Details Annular foam seal Annular foam seal

2005-09-13

2005-09-13

Wilson, Gregory (Department: 3749)

Liquid heaters and vaporizers

Stand boiler

And casing feature for stand boiler or external water tank...

C122S494000

Reexamination Certificate

active

06941899

ABSTRACT:
A water heater includes a tank and a jacket surrounding the tank. Between the tank and jacket is defined an annular space in which a seal is positioned. The seal extends between the tank and the jacket and defines a bottom of the annular space. The seal includes a depending flange that retains a fiberglass batt against the water tank so that the batt does not interfere with lowering the jacket around the tank. The seal also includes a plurality of arms that center and round out the jacket as it is lowered over the tank. A liquid-based insulation is pumped into the annular space under pressure, and the seal substantially prevents any of the insulation from leaking through the bottom of the annular seal. The arms may be progressively longer and/or thicker from the top down to permit some of the insulation to bypass the upper arms and fill the spaces between the arms.

REFERENCES:
patent: 4372028 (1983-02-01), Clark et al.
patent: 4736509 (1988-04-01), Nelson
patent: 4749532 (1988-06-01), Pfeffer
patent: 4878482 (1989-11-01), Pfeffer
patent: 4890762 (1990-01-01), Pfeffer
patent: 4907569 (1990-03-01), Lemense
patent: 4911142 (1990-03-01), Nelson
patent: 4945892 (1990-08-01), Chevalier et al.
patent: 4956909 (1990-09-01), Nelson
patent: 4957097 (1990-09-01), Chevalier et al.
patent: 4958620 (1990-09-01), Nelson
patent: 4972967 (1990-11-01), Nelson
patent: 4979637 (1990-12-01), Nelson
patent: 4996759 (1991-03-01), Nelson
patent: 4998970 (1991-03-01), Nelson
patent: 5024210 (1991-06-01), Nelson
patent: 5040697 (1991-08-01), Nelson
patent: 5263469 (1993-11-01), Hickman
patent: 5421475 (1995-06-01), Nelson
patent: 5509566 (1996-04-01), Nelson

Affiliated with

Also associated with

Rating

Annular foam seal does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3404502