A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Locking devices and a method of installation are disclosed for securing a manhole cover which has not been previously secured to its associated mounting frame or casting. The locking device provides a means for the prevention of theft or vandalism of the manhole cover by unauthorized individuals. The locking device fits between the unsecured cover and the mounting frame for the cover by engaging an interior ledge, rim or supporting shoulder of the mounting frame beneath the cover at one end thereof, exiting between the outside circumference of the cover and the mounting, and then catching the exterior of the mounting frame outside the circumference of the manhole. A cover bolt passes through the access hole adjacent the outer circumference of the manhole cover and is screwed into a nut portion of the locking device.
Locking devices and a method of installation are disclosed for securing a manhole cover which has not been previously secured to its associated mounting frame or casting. The locking device provides a means for the prevention of theft or vandalism of the manhole cover by unauthorized individuals. The locking device fits between the unsecured cover and the mounting frame for the cover by engaging an interior ledge, rim or supporting shoulder of the mounting frame beneath the cover at one end thereof, exiting between the outside circumference of the cover and the mounting, and then catching the exterior of the mounting frame outside the circumference of the manhole. A cover bolt passes through the access hole adjacent the outer circumference of the manhole cover and is screwed into a nut portion of the locking device.
MANHOLE COVER LOCKING DEVICE
TAYLOR JERRY D (author)
2015-07-23
Patent
Electronic Resource
English