Fire hydrant cap with recessed valve
OwnerArne J. Britzinventor
Life of this patent
Estimating the term…
Abstract
A multilobe bonnet is provided for the upper end of a fire hydrant with the multiple lobes thereof projecting upwardly from the bonnet at points spaced about and radially outwardly from the conventional pentagonal upper terminal end of the hydrant valve control rod, the upper terminal end projecting above the upper surfaces of the bonnet disposed centrally between the upwardly projecting lobes disposed thereabout. In addition, the side outlet closure caps of the hydrant are formed in a similar manner with the lobes on the bonnet preventing the engagement of a convention wrench with the valve control rod upper terminal end and the lobes on the closure caps similarly preventing engagement of conventional wrenches with the central pentagonal projections on the caps.
Claims4
In combination with a valve body of the type including an upstanding tubular body and an uppr end bonnet secured over the upper end of said body, said bonnet including an upper central wall portion upwardly through which a rotatable valve actuating stem projects and is rotatably received, said bonnet including a plurality of upwardly projecting lobes spaced outwardly from and about said central portion, said stem including an upper terminal end defining a non-circular cross section wrench engageable portion for telescopic engagement thereof with a similar non-circular cross section rotary wrench shank terminal end, said lobes projecting above said central portion to an elevation spaced a predetermined distance above the upper terminal end of said stem, the lower portions of said lobes being spaced apart about said central portion, said bonnet defining water drainage zones thereof extending generally radially outwardly from said central portion between adjacent lobes and disposed at a lower elevation than said central portion, said bonnet being free of obstructions overlying said shank, lobes and water drainage zones, the upper ends of said lobes being smoothly rounded.
Dependencies are inferred from the claim text.