Smiling duckbill valve

Details Smiling duckbill valve Smiling duckbill valve

1998-01-05

1999-03-16

Ferensic, Denise L.

Measuring and testing

137844, 137843, F16K 1514

Patent

active

058817727

ABSTRACT:
A duckbill valve is provided based on a valve seal with a hollow cylindrical body with first and second ends, the first end having an open mouth, the second end having a closable mouth circumscribed by a pair of crescent shaped lips. One of the lips has a thinner width than the other. The cylindrical body flares outward in the direction from the first end towards the second end. In another aspect, the cylindrical body includes a posterior and an anterior section adjacent the respective first and second ends, the anterior section having an outer wall portion curvilinearly tapering toward the thinner lip. Valves of the present invention are particularly suitable for controlling flow of semi-solid substances because the mouth of the duckbill can open to a relatively large extent, the latter being off-center within a round collar fitting.

REFERENCES:
patent: 657007 (1900-08-01), Richter
patent: 3349972 (1967-10-01), Whiteford
patent: 3369496 (1968-02-01), Bushmeyer
patent: 3517682 (1970-06-01), Smith
patent: 3730217 (1973-05-01), Gute
patent: 4524805 (1985-06-01), Hoffman
patent: 4660747 (1987-04-01), Borg et al.
patent: 4870992 (1989-10-01), Irwin et al.
patent: 5010925 (1991-04-01), Atkinson et al.
patent: 5234138 (1993-08-01), De Laforcade
Vernay Product Brochure--May 1979.

Affiliated with

Also associated with

Rating

Smiling duckbill valve does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-809411