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Pennsylvania Plastic Products, Inc. Patents |
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Assignee: Pennsylvania Plastic Products, Inc.
Address: Eldred, PA
No. of patents: 2
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 4119121 |
Protective closure for internal pipe threads |
October 10, 1978 |
| A plastic closure securely insertable into the end of a pipe, pipe coupling secured to the end of a pipe, tubing, casing or the like for protecting the internal threads from damage. The closure comprises a tapered sleeve having a pair of axially spaced, outer peripheral thread portions. |
| 4079756 |
Protective closure for external pipe threads |
March 21, 1978 |
| A plastic closure securely mounted on the external threads at the end of a pipe, tubing, casing, or the like for protecting the external threads from damage. The closure comprises a tapered sleeve which is normally uncompressed and compressed by tightening a metal strap enclosing the |
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