US Patent: 3,013,823
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| Seal
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Patentee:
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| George H. Schulz (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: |
Mar. 10, 1958 |
| Granted: |
Dec. 19, 1961 |
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Joel Havens
"Vintage Machinery" entry for Gits Bros. Mfg. Co.
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Description: |
| Claim:
In a shaft seal, a member having a cylindrical wall adapted to surround a shaft, a ring having at least a portion thereof surrounding said wall, said portion of said ring surrounding said wall being radially spaced from said wall to form an annular recess in cooperation with said wvall, said ring having a backing shoulder formed at one end of said recess, a coating formed in integrally bonded relationship on said wall adjacent said recess and adjacent said ring, said coating having a thickness of from .2 to .4 mils and a coefficient of friction in the neighborhood of .1, a first insulating annulus abutting said shoulder, said ring and said coating, a second annulus abutting said first annulus, said ring and said coating, said first annulus being formed of resilient material, said second annulus being formed of resilient material, said first annulus having a lesser resiliency than said second annulus and having a high degree of heat resistance to withstand fluid pressures thereagainst, a metal washer disposed in said recess in abutting relationship to said second annulus and having an inner diameter greater than the diameter of said wall, and means for exerting axial force through said washer, said first annulus and said second annulus to produce radial sealing force between said first annulus and said second annulus and said coating, so that slidable adjustment of said first and second annuli, and said wall, is -afforded with a highly effective sealing action being maintained therebetween. |
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