Patent information:
| Patent: | Utility 3,582,538 |
| Patented: | June 1, 1971 |
| Applied: | December 22, 1969 |
| Title: | Prestressed Insulator |
| Description: | Prestressing post type insulators by making porcelain in compression in order to increase cantilever load |
| Category: | Post Type |
| Assigned to: | Interpace Corp. |
Patentee Information:
Class and subclass information:
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 158R | INSULATORS; With insulator-supporting or attaching means; |
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 169 | INSULATORS; With conductor holding means; Fitting or terminal type; |
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 178 | INSULATORS; With terminal elements; Plural; Multi-part, sectional or composite insulator; |
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 179 | INSULATORS; With terminal elements; Plural; Multi-part, sectional or composite insulator; Protected rod type; |
Known specimens:
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Drawings:
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