Temporary manhole cover
First Claim
1. A temporary manhole cover comprising:
- a. an outer rim dimensioned to fit into a manhole opening;
b. a pair of parallel and spaced apart rods extending from the outer rim to the center such that the center is midway between the rods;
c. a valve key receiving and positioning assembly comprising a substantially circular ring and two diametrically opposite sleeves exteriorly attached to the ring for receiving the rods, wherein the assembly is movable along the rods and a valve key can be inserted into the manhole through the ring; and
d. a meshed framework covering an area bordered by the circular rim, leaving an area between the two rods, the meshed framework serving as a platform to support a user and defining a plurality of openings that facilitate sight through the manhole cover for viewing into the manhole after the cover is placed thereon.
0 Assignments
0 Petitions
Accused Products
Abstract
A temporary cover for manholes to provide a platform for maintenance workers when operating valves of underground utility systems. The cover comprising a circular outer rim dimensioned to fit into a manhole opening, a pair of parallel and spaced apart rods extending from the outer rim to its center, a valve key receiving and positioning assembly movable along the rods, and a meshed framework covering an area bordered by the circular rim, leaving an area between the two rods. The assembly comprises a ring and two diametrically opposite sleeves exteriorly attached to the ring for receiving the rods. A valve key can be inserted into the manhole through the ring. The meshed framework serves as a platform to support a person and defines a plurality of openings facilitating viewing into the manhole after the cover is placed thereon.
28 Citations
12 Claims
-
1. A temporary manhole cover comprising:
-
a. an outer rim dimensioned to fit into a manhole opening; b. a pair of parallel and spaced apart rods extending from the outer rim to the center such that the center is midway between the rods; c. a valve key receiving and positioning assembly comprising a substantially circular ring and two diametrically opposite sleeves exteriorly attached to the ring for receiving the rods, wherein the assembly is movable along the rods and a valve key can be inserted into the manhole through the ring; and d. a meshed framework covering an area bordered by the circular rim, leaving an area between the two rods, the meshed framework serving as a platform to support a user and defining a plurality of openings that facilitate sight through the manhole cover for viewing into the manhole after the cover is placed thereon. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A temporary manhole cover comprising:
-
a. an outer rim dimensioned to be placed over a manhole opening; b. two parallel and spaced apart rods extending from the outer rim to its center; c. a valve key receiving and positioning assembly comprising a circular ring and two diametrically opposite sleeves exteriorly attached to the ring for receiving the rods, wherein the assembly is movable along the rods and a valve key can be inserted into the manhole through the ring; and d. a meshed framework covering an area bordered by the rim, except for leaving an area between the two rods, the meshed framework serving as a platform to support a person and defining a plurality of openings that facilitate seeing through the manhole cover for viewing into the manhole after the cover is placed thereon. - View Dependent Claims (9, 10, 11, 12)
-
Specification