Locking cover
OwnerDennis Smithinventor
Life of this patent
Estimating the term…
Abstract
A lockable cover for a ground opening such as a manhole or catch basin. The cover has a lock including a reciprocating locking bolt mounted to its underside for engagement of a lip of a surrounding support. The bolt is accessible directly from above the cover through an aperture in the cover. In one disclosed embodiment, a cover is secured to its support by a pin which extends from the cover to under a lip of the support and a lock. In another embodiment, a catch basin cover is secured to its support through a hinge connection and a lock. In another embodiment, a manhole cover is secured to its support through a pair of locks.
Claims31
A cover for installation on a support atop a ground opening such as a manhole, catch basin or the like, the cover being dimensioned to fit within walls of the support to preclude substantial lateral movement of the cover with respect to the support, and the support having a lip directed inwardly of the walls, the cover comprising:
- means for abutting the support when the cover is moved upwardly with respect to the support;
- a bolt mounted to an underside of the cover for reciprocal movement between laterally extended and retracted positions and located to extend under the lip of the support when in the extended position when the cover is installed on the support so as to be in abutting contact with an underside of the lip when the cover is moved upwardly with respect to the support;
- wherein,
- the bolt has a first hole in its top side;
- the cover includes an aperture located to be above the bolt when in the extended position such that a fastener may be inserted therethrough and received in the hole of the bolt for fastening of the bolt in the extended position;
- and
- the bolt and abutting means are spaced from each other such that when the cover is installed on the support and the bolt is fastened in the extended position, the butting means is in abutting engagement with the support, and the bolt and the lip cooperate to preclude lifting of the cover from the support.
A lockable cover and support combination for a ground opening such as a manhole, sewer or the like, the cover being dimensioned to fit within walls of the support to preclude substantial lateral movement of the cover with respect to the support when installed therewith, comprising:
- a pair of hinges for connection of the cover and support, each hinge including an upwardly open slot in the support and a corresponding lug on the cover protruding edgewise outwardly of the cover such that the cover may be rotated about the hinges between open and closed positions and the cover is removable from the support when in the open position;
- and
- a lock comprising a bolt mounted to an underside of the cover for reciprocal movement between laterally extended and retracted positions and a lip located on the support such that the bolt extends thereunder when in the extended position;
- wherein
- the bolt has a first hole in its top side;
- the cover includes an aperture located to be above the bolt when in the extended position such that a fastener may be inserted therethrough and received within the hole of the bolt for fastening of the bolt in the extended position;
- and
- the bolt and lip are located and the slots angled such that when the cover is in the closed position and the bolt is fastened in the extended position below the lip, the lock and hinges cooperate to preclude lifting of the cover from the support.
A cover having a circular top face for installation on a support atop a ground opening, the support having a wall defining a circular cavity for receipt of the cover, the cover being dimensioned to fit within the wall to preclude substantial lateral movement of the cover with respect to the support, and the support having a lip directed radially inwardly of the wall, the cover comprising:
- a pair of bolts, each bolt mounted to an underside of the cover for reciprocal movement between radially extended and retracted positions and located to extend under the lip of the support when in the extended position when installed on the support so as to be in abutting contact with an underside of the lip when the cover is moved upwardly with respect to the support;
- wherein,
- each bolt has a first hole in its top side;
- the cover includes a pair of apertures, each aperture located to be above one of the bolts when in the extended position such that a fastener may be inserted therethrough and received in the hole of the bolt for fastening of the bolt in the extended position;
- and
- the bolts are spaced from each other such that when the cover is installed on the support and each bolt is fastened in the extended position, the bolts cooperate with the lip such that said abutting contact precludes lifting of the cover from the support.
A cover for installation on a support atop a ground opening such as manhole, catch basin or the like, the cover being dimensioned to fit within walls of the support to preclude substantial lateral movement of the cover with respect to the support, and the support having a lip directed inwardly of the walls, the cover comprising:
- means for abutting the support when the cover is moved upwardly with respect to the support;
- a bolt mounted to an underside of the cover for reciprocal movement between laterally extended and retracted positions and located to extend under the lip of the support when in the extended position when the cover is installed on the support so as to be in abutting contact with an underside of the lip when the cover is moved upwardly with respect to the support;
- wherein,
- the cover includes an aperture located to be above the bolt when in the extended position such that a fastener may be inserted therethrough for fastening of the bolt in the extended position;
- the bolt includes one or more ridges on its top side for engagement by a tip of a tool inserted through the aperture of the cover for movement of the bolt between the extended and retracted positions;
- and
- the bolt and the abutting means are spaced from each other such that when the cover is installed on the support and the bolt is fastened in the extended position, the abutting means in abutting engagement with the support, and the bolt and the lip cooperate to preclude lifting of the cover from the support.
A lockable cover and support combination for a ground opening such as a manhole, sewer or the like, the cover being dimensioned to fit within walls of the support to preclude substantial lateral movement of the cover with respect to the support when installed therewith, comprising:
- a pair of hinges for connection of the cover and support, each hinge including an upwardly open slot in the support and a corresponding lug on the cover protruding edgewise outwardly of the cover such that the cover may be rotated about the hinges between open and closed positions and the cover is removable from the support when in the open position;
- and
- a lock comprising a bolt mounted to an underside of the cover for reciprocal movement between laterally extended and retracted positions and a lip located on the support such that the bolt extends thereunder when in the extended position;
- wherein
- the cover includes an aperture located to be above the bolt when in the extended position such that a fastener may be inserted therethrough for fastening of the bolt in the extended position;
- the bolt includes one or more ridges on its top side for engagement by a tip of a tool inserted through the aperture of the cover for movement of the bolt between the extended and retracted positions;
- and
- the bolt and lip are located and the slots angled such that when the cover is in the closed position and the bolt is fastened in the extended position below the lip, the lock and hinges cooperate to preclude lifting of the cover from the support.
A cover having a circular top face for installation on a support atop a ground opening, the support having a wall defining a circular cavity for receipt of the cover, the cover being dimensioned to fit within the wall to preclude substantial lateral movement of the cover with respect to the support, and the support having a lip directed radially inwardly of the wall, the cover comprising:
- a pair of bolts, each bolt mounted to an underside of the cover for reciprocal movement between radially extended and retracted positions and located to extend under the lip of the support when in the extended position when installed on the support so as to be in abutting contact with an underside of the lip when the cover is moved upwardly with respect to the support;
- wherein,
- the cover includes a pair of apertures, each aperture located to be above one of the bolts when in the extended position such that a fastener may be inserted therethrough for fastening of the bolt in the extended position;
- at least one of the bolts includes one or more ridges on its top side for engagement by a tip of a tool inserted through the aperture of the cover for movement of the bolt between the extended and retracted positions;
- and
- the bolts are spaced from each other such that when the cover is installed on the support and each bolt is fastened in the extended position, the bolts cooperate with the lip such that said abutting contact precludes lifting of the cover from the support.
Dependencies are inferred from the claim text.