Tamper proof lock

Details Tamper proof lock Tamper proof lock

1976-06-18

1977-12-13

Cohan, Alan

Fluid handling

Hydrant type

With casing

74 8915, 744248VA, 1373825, 251278, 251291, 251337, E03B 906, F16K 3506

Patent

active

040623750

ABSTRACT:
A tamperproof lock for a fire hydrant. A spring is mounted at one end on the fire hydrant housing. Power transmitting means are mounted on a threaded operating rod extending within the housing chamber. The power transmitting means transmit power to the threaded rod against the spring. A swivel plate is freely mounted on the power transmitting means for rotational movement thereon. The swivel plate has a contoured hub portion adapted to fit within an aperture within the fire hydrant bonnet. The hub portion is exposed to the exterior of the bonnet. Power means for applying power substantially along the axis of the threaded rod to move the rod against the spring are removably mounted on the bonnet. Means for preventing axial and rotational movement of the power means is pivotably connected thereto by means of a double pivot joint.

REFERENCES:
patent: 3532109 (1970-10-01), Smith

Affiliated with

Also associated with

Rating

Tamper proof lock does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tamper proof lock, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tamper proof lock will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-484654