Dual flange tee

Details Dual flange tee Dual flange tee

2005-10-14

2009-08-04

Hepperle, Stephen M (Department: 3753)

Fluid handling

Removable valve head and seat unit

C251S143000, C251S144000, C222S181100, C222S185100, C285S133110

Reexamination Certificate

active

07568496

ABSTRACT:
The dual flange hopper tee or other fitting connects to the bottom of a hopper for use in unloading the contents thereof, and has a relatively low profile for ground clearance. When used in conjunction with a valve, the tee or other fitting can be removed from the hopper without requiring removal of the valve, and can allow opening of the valve without interfering with flow through a horizontal pipe section of the fitting.

REFERENCES:
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patent: 2895496 (1959-07-01), Sanctuary
patent: 3251122 (1966-05-01), Boteler
patent: 3402731 (1968-09-01), Martin
patent: 3583668 (1971-06-01), Nelimarkka
patent: 3654008 (1972-04-01), Rogers et al.
patent: 3813023 (1974-05-01), Auray et al.
patent: 3982727 (1976-09-01), Nelimarkka
patent: 4652020 (1987-03-01), Gilroy
patent: 4711426 (1987-12-01), Bodnar
patent: D297678 (1988-09-01), Sisk
patent: 4848396 (1989-07-01), Sisk
patent: 5387015 (1995-02-01), Sisk
patent: 5676404 (1997-10-01), Sisk
patent: 489602 (1938-01-01), None

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