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R. Goodwin International Ltd. Patents |
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Assignee: R. Goodwin International Ltd.
Address: Hanley-Stoke-On-Trent, GB2
No. of patents: 2
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 4694853 |
Wafer check valves |
September 22, 1987 |
| A wafer check valve having an annular housing, closing flaps effective to close a passage through the housing and spring urged to a passage closing position, the flaps being mounted on one or more hinge pins, the or each hinge pin extending at each end into a bore in an insert, the inser |
| 4650342 |
Agitating particulate solids |
March 17, 1987 |
| The invention relates to a method of and apparatus for agitating and pumping particulate solids which are settled in and beneath a liquid by rotating a vaned impeller which is attached to a pump such that pressure waves are set up in the liquid and the settled solids, the solids being |
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