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Title:
Beam clamp
Abstract:
A threaded U-bolt receives a conduit to be clamped to an I-beam. A moisture resistant, polymeric material covers the conduit support portion of the U-bolt with the bolt threads remaining exposed. A clamping member covered with a moisture, resistant polymeric coating includes a first end portion adapted to engage a flange of the I-beam and a second end portion adapted to engage the conduit. A pair of apertures extend through the clamping member. A pair of resilient polymeric annular flanges extend upwardly from the upper surface of the clamping member and around the apertures. The U-bolt threaded ends extend upwardly through the apertures. A pair of polymeric nuts engage the threaded ends above the annular flanges of the clamping member. A resilient sealing flange extends radially from the open end of each encapsulated nut. The nuts are threadedly advanced on the U-bolt threaded ends to position the sealing flanges in contact with the clamping member annular flanges to form a radial, moisture resistant seal around the connections of the nuts to the threaded ends to prevent corrosion of the threaded connections.
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Inventors:
Madej, Edward A. (Verona, PA)
Application Number:
06/170794
Filing Date: 1980-07-21 Publication_date: 1983-08-09 Assignee:
Robroy, Ind
Primary Class(es):
248/72
411/431, 411/542, D08/394
Other Classes:
F16B2/06; F16B33/00; F16B37/14; F16L3/24; F16B2/02; F16B37/00; F16L3/24
US Patent Ref:
| 1262743 | April, 1918 | Bronson | 411/429 | | | 1319652 | October, 1919 | Korns | 248/72 | | | 1516911 | November, 1924 | Canfield et al. | 285/390 | Reenforcing sleeve for rotary drill pipe | | 2795144 | June, 1957 | Morse | 411/431 | Moisture-proofing device | | 3075038 | January, 1963 | Schinske | 174/87 | Connector assembly | | 3297816 | January, 1967 | Waddington | 174/87 | Connector for electrical conductors | | 3299766 | January, 1967 | Gould et al. | 411/371 | Sealing element for fastener devices | | 3448223 | June, 1969 | Thorsman | 174/87 | CLAMP FOR CONNECTING ELECTRIC WIRES | | 3724706 | April, 1973 | Slocum | 220/38 | EXPLOSION PROOF JUNCTION BOX | | 4180228 | December, 1979 | Snyder et al. | 248/74R | Pipe clamp |
Other Refs:
CA905344| July, 1972 | 411/431 | | | DE2516013December, 1975 | 411/429 | | |
Other References:
Electrical Construction and Maintenance-vol. 76, No. 1, Jan. 1977, p. 112.
Primary Examiner:
Schultz, William H.
Assistant Examiner:
Ramirez, Ramon O.
Attorney:
Price Jr., Stanley J.
Adams, John M.
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