Pick hole guard for manhole covers
Assignee6672205 Canada Incorporated
InventorTina THOMPSON
Life of this patent
Estimating the term…
Abstract
Pick hole guards are provided for use in guarding pick holes on manhole covers. In some embodiments of the present invention, the pick hole guards can have a base, biasing member, and guard member. The biasing member can be attached to the base and guard member, and can bias the guard member toward a pick hole on the manhole cover to guard the pick hole. In other embodiments, the pick hole guards do not have movable guard members, but instead have retaining surfaces to serve as a receptacle for catching waste disposed through a pick hole.
Claims23
A manhole cover having a pick hole guard coupled to a bottom surface of the manhole cover, the pick hole guard comprising:
- a movable guard member;
- and
- a base, wherein there is a biasing member attached to the base and attached to the movable guard member for biasing the movable guard member toward a pick hole of the manhole cover.
A pick hole guard assembly comprising:
- a movable guard member;
- a base;
- a biasing member attached to the base and the movable guard member for biasing the movable guard member toward a pick hole on a manhole cover;
- and
- a push rod insertable in the pick hole to press against a surface of the movable guard member to overcome a biasing force of the biasing member.
A method of guarding and accessing a pick hole for a manhole cover, the method comprising:
- applying a force against a guard member to bias the guard member toward a pick hole in a manhole cover;
- and
- overcoming the force by exerting pressure against the guard member.
A manhole cover assembly comprising:
- a manhole cover having a plurality of pick holes;
- and
- a receptacle having vent gaps, the receptacle being coupled to the manhole cover and positioned beneath a pick hole of the manhole cover, the receptacle also having at least one retaining surface spaced-apart from the pick hole with a vent gap on the retaining surface.
Dependencies are inferred from the claim text.