| SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN category ON category.patent = patent.patent AND category.type = patent.type WHERE (category.class = '264') AND (category.subclass = 'DIG.54') ORDER BY date ASC, patent, type |
Total of 5 patents found where: Class is '264'; Subclass is 'DIG.54';
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| T / S | Patent | Date | Description | Patentee | Category | Assigned To |
| 1926 | ||||||
| U | 1,574,883 | March 2, 1926 | Method and Apparatus for Cementing Insulators Machine to vibrate insulator to improve cementing of the parts |
HARVEY, William F. |
Manufacturing | |
| 1928 | ||||||
| U | 1,677,498 | July 17, 1928 | Apparatus for Undercutting Pinholes in the Center Shells of Insulators Machine to undercut the pinhole for the suspension pin to prevent the pin from pulling out of the insulator. |
SMITH, William Henry |
Suspension | Electric Service Supplies Co. |
| 1929 | ||||||
| U | 1,731,099 | October 8, 1929 | Method of Forming a Cement-Receiving Surface on an Insulator Section Improve cement adhesion by using a special roller tool to form a rough surface similar to that obtained by sanding. |
HARVEY, William F. |
Cement | |
| 1935 | ||||||
| U | 2,007,567 | July 9, 1935 | Apparatus for Molding Insulators Machine for hot pressing porcelain box for street lights in one operation the interior surface with a rotating die and the exterior irregular surface with lugs with a stationary die (see 1,929,737) |
FISCHER, Eugene H. |
Manufacturing | Westinghouse Electric & Mfg. Co. |
| 1975 | ||||||
| U | 3,923,570 | December 2, 1975 | Manufacture of Insulators Method of cementing suspension insulators using thick cement and high intensity vibrations |
WILLEM, Michel |
Suspension | Societe Europeene d'Isolateurs en Verre (SEDIVER) |
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