Back to results
US 5,951,200 AGranted
Enclosement to shield structure which secures entrance-deterring cap to manhole opening from water and dirt containments
AssigneeBarton Southern Company, Inc.
InventorDavid L. Barton
Life of this patent
Estimating the term…
Abstract
A cap formed with a pan that defines a central dish which receives a portion of the securing members that secure the pan to a manhole opening. A cover closes over the central dish to restrict entry of water and dirt contaminants into the central dish. The cover and the central dish thereby define an enclosure for the securing members which connect the cap to the manhole cover.
Claims13
An entrance-deterring cap for manhole openings, comprising:
- an annular pan having a central dish and a skirt extending therefrom, the skirt defining a land portion and a taper portion with an annular flange extending laterally at a distal edge of the skirt for supporting the pan on an upper edge of a frame in a manhole opening;
- a coverplate which attaches to the pan to cover the central dish;
- and
- securing means for securing the pan on an upper surface of a frame in a manhole opening, said securing means at least partially received within the central dish,
- whereby the cover, being attached to the pan, substantially closes the central dish for restricting contaminants from the securing means therein.
2 more elements
An entrance-deterring cap for manhole openings, comprising:
- an annular pan having a central dish and a skirt extending therefrom, the skirt defining a land portion and a taper portion with an annular flange extending laterally at a lip of the skirt for supporting the pan on an upper edge of a frame in a manhole opening, the central dish having a bottom defining a central opening therethrough;
- a coverplate which attaches to the pan to cover the central dish;
- an elongate bar disposed outwardly of the pan adjacent the bottom and having a pair of plates rigidly attached as respective distal ends of the bar;
- a threaded stud rigidly attached to the elongate bar for insertion through the opening whereby the plates of the bar are disposed outwardly of the skirt with the distal ends of the plates near the flange of the pan;
- an elongate flexible strand rigidly attached at a first end to a distal end of the threaded stud and extending through the opening in the pan for coupling the bar with the pan;
- a nut received on the strand within the pan and sized for threadingly engaging the stud to fasten the bar to the bottom of the pan;
- and
- a handle attached to a second end of the strand for pulling the strand through the opening and thereby extending the threaded stud through the opening into the pan,
- whereby the pan, being supported by the flange on an upper surface of a frame in a manhole opening, is secured thereto by bearing the distal ends of the plates against a lower surface of the frame by engaging the nut to the stud within the pan, and the cover, being attached to the pan, substantially closes the central dish for restricting contaminants from the handle, nut, strand, and threaded stud within the central dish.
6 more elements
Dependencies are inferred from the claim text.