US Patent: 3,093,381
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| Shaft Seal
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Patentee:
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| George Schultz (exact or similar names) - Naperville, DuPage & Will counties, IL |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jul. 07, 1961 |
| Granted: |
Jun. 11, 1963 |
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Joel Havens
"Vintage Machinery" entry for Gits Bros. Mfg. Co.
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Description: |
| Claim:
A rotary seal assembly for removable insertion into a chamber having a cylindrical wall and a radial end wall and for fitting over the end of a shaft projecting from the chamber, said seal comprising a mating ring having an annular radial sealing face and an inner annular surface spaced from the shaft for the insertion of a removal tool and having a radial support face parallel to said sealing face and positioned on the end of the seal opposite said sealing face for engaging the end wall of the chamber and determining the position of the mating ring, an annular outwardly facing groove on the mating ring, an annular resilient seal in said groove for sliding along the outer wall of the cylindrical chamber when the mating ring is inserted and for sealing against the outer wall of the chamber, a bevelled edge formed on the outer edge of the mating ring joining said support face, means defining a radially extending groove in said support face for com municating with a passage leading into said cylindrical chamber so that fluid can flow outwardly past said support face, a removing tool groove at the inner edge of said support face, the inner periphery of the mating ring being larger than the shaft for the insertion of a removing tool between the shaft and mating ring to engage said tool groove, a rotatable sealing ring having an annular radial face for sealingly engaging the sealing face of the mating ring, a carrier ring for supporting the sea-fling ring on the shaft, an inwardly facing annular groove on the carrier ring defined by a circumferential surface on the carrier ring, further defined by a radial surface on the carrier ring, and further defined by a radial surface on the rotatable sealing ring, an annular resilient seal within the groove in the carrier ring for resiliently engaging the shaft, a. radially outwardly facing spring support surface on the carrier ring, a coil compression spring having one end locked over said spring support surface, a backing washer engaging the other end of said spring, a driving end for said shaft having flattened radial surfaces, a drive coupling having a radially extending groove with flat surfaces for engaging the drive surfaces of the shaft, and inwardly projecting tongues on said washer projecting into said coupling groove for driving the washer with the coupling in rotation, said washer locked axially to the coupling for providing a backing for the spring. |
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