Fluid handling – With casing – support – protector or static constructional... – Guards and shields
Reexamination Certificate
2005-06-07
2005-06-07
Lee, Kevin (Department: 3753)
Fluid handling
With casing, support, protector or static constructional...
Guards and shields
C137S294000, C220S284000, C220S725000, C220S726000, C220S727000
Reexamination Certificate
active
06901950
ABSTRACT:
Fire hydrant locking devices prevent fire hydrants from being turned on without a key. A fire hydrant has a keyhole in its sidewall. A security bolt is threadedly inserted into the keyhole with one end frictionally engaging with the valve stem in the interior of the fire hydrant in one embodiment. In an alternative embodiment, the security bolt pushes a locking pin through a locking pin hole in the valve stem. The security bolt has key projections that are accessed through the keyhole by a key wrench. The key wrench has key slots that mate with the key projections. The key wrench has a handle for applying torque to the security bolt. The fire hydrant has hose connection ports connected to its sidewall that are removably covered by covers.
REFERENCES:
patent: 359714 (1887-03-01), Deming
patent: 3450148 (1969-06-01), Mongelluzo et al.
patent: 3453897 (1969-07-01), Adinolfi
patent: 3560130 (1971-02-01), Horhota
patent: 4280525 (1981-07-01), Byrnes
patent: 4284099 (1981-08-01), Rifat
patent: 4614203 (1986-09-01), Russo
patent: 4620428 (1986-11-01), Kopesky
patent: 4936336 (1990-06-01), McCauley et al.
patent: 5046523 (1991-09-01), Horhota
patent: 5205312 (1993-04-01), Jerman et al.
patent: 5549133 (1996-08-01), Sigelakis
patent: 5630442 (1997-05-01), Julicher
patent: 5722450 (1998-03-01), Julicher
patent: 5727590 (1998-03-01), Julicher et al.
patent: 6112761 (2000-09-01), Scotto
Burt James E.
Ireland Fredrick D.
LandOfFree
Fire hydrant locking device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fire hydrant locking device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fire hydrant locking device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3510216