Fire hydrant cap and actuating tool therefor
作者： Henry Stehling
DOI:
关键词:
摘要: A fire hydrant cap and actuating tool for use therewith provide enhanced security hydrants increased safety when using the tool. The is forged of 8620 carbon steel; provided with an internal steel lock washer cadmium plate steel, includes thereon a forged, external slip ring lubrication between cap. which used in combination gripper fits under to prevent from slipping, spanner wrench hexagonal socket screw gripping rounded-off valve stems.
lens.org 参考文章(9)
Gerald A Graham, Fire hydrant cap and actuating tool therefor ,(1974)
Peter A. Franceschi, Tamper-proof locking system for fire hydrants ,(1974)
H Atwood, Lean J Mc, Spinning and twisting ring construction ,(1972)
Arnold L. Borenstein, Daniel W. Borenstein, Hydrant protective cap and cover structure and operating wrench therefor ,(1986)
Dennis W. Humes, Wilbur R. Leopold, Tamperproof fire hydrants ,(1985)
Gary R. Bainbridge, Lewis D. McCauley, John H. Taylor, Locknut and key therefor ,(1984)
Edwin J. Oakey, Fire hydrant protection device ,(1977)
Frank J Novak, Rubertino Louie, Lubricator for vehicle front wheel bearings ,(1947)
Edward Drach, Security cap assembly and actuator ,(1984)