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dfield, Donald A. Patents |
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Inventor: Hadfield, Donald A.
Address: Hampton, NH
No. of patents: 2
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 4890867 |
Integral ferrule |
January 2, 1990 |
| A coupling combination comprising a ferrule ring having a portion outwardly of the outer surface of said pipe and having an integral deformable ferrule arm extending longitudinally therefrom adjacent to the outer surface of the pipe, the ring being placed over the pipe such that the |
| 4810219 |
Life saving device |
March 7, 1989 |
| An inflatable flotation assembly includes a compressed gas cylinder stored inside a split housing the parts of which are held together by a releasable pivot on one end and an interlocked pivoted arm at the other end which engages a flexible tab aligned against the gas cylinder. The arm |
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