Tamper-proof hydrant cover

A tamper-proof cover for the operating nut of a hydrant, the cover comprising:

• a housing adapted to be positioned above the operating nut and completely covering the operating nut;
• housing mounted means securable to the hydrant and covered by and engagable with the housing for securing the housing to the hydrant;
• the mounting means and the housing each having a plurality of mating flanges which are covered by the housing when mutually engaged and which are radially spaced around the housing and mounting means such that rotation of the housing relative to the mounting ring causes engagement and disengagement of the flanges;
• and
• locking means for preventing rotation of the housing relative to the mounting means, the locking means including a pin engageable with the housing and a recess defined in the mounting means, a locking member engageable with the pin and the recess in the mounting means, frangible means in the locking member for securing the pin to the locking member, the frangible means being breakable to remove the pin from the recess so that the housing can be removed to provide access to the operating nut.

A tamper-proof cover for the operating nut of a hydrant, the cover comprising:

• a housing adapted to be position above the operating nut and completely covering the operating nut;
• housing mounting means securable to the hydrant and covered by and engageable the housing for securing the housing to the hydrant;
• the mounting means and the housing each having a plurality of mating flanges which are covered by the housing when mutually engaged and which are radially spaced around the housing and mounting means such that rotation of the housing relative to the mounting ring causes engagement and disengagement of the flanges;
• locking means for preventing rotation of the housing relative to the mounting means;
• the mounting means including a ring-shaped member having a plurality of holes corresponding to bolt positions in the hydrant and the plurality of flanges thereon are arcuate and spaced around the ring;
• the housing is dome-shaped with a circular base portion with an external diameter approximately that of the outer diameter of the ring, and has a plurality of arcuate flanges on its inner surface corresponding to the flanges on the ring and matingly shaped so that rotation of the housing relative to the ring causes the flanges to engage or disengage so as to secure or unsecure the housing to the ring;
• the housing including an opening in a side portion thereof;
• and
• the locking means including a pin positionable in the opening in the housing and engageable with a recess defined in the mounting means, a locking member engageable with the pin and a recess in the mounting means, a frangible shoulder within the recess in the mounting means against which the locking member seats and which must be broken to slidably remove the pin from the recess so that the housing can be removed to provide access to the operating nut.

A tamper-proof cover for the operating nut of a hydrant, the cover comprising:

• a housing adapted to be positioned above the operating nut for covering the operating nut;
• mounting means securable to the hydrant and engageable with the housing for securing the housing to the hydrant;
• the mounting means having a passageway and the housing having a tab for engagement in the passageway;
• and
• locking means for securing the tab in the passageway to prevent removal of the housing from the mounting means, the locking means including a pin engageable with the tab and a recess defined in the mounting means, a locking member engageable with the pin and the recess in the mounting means, frangible means in the locking member for securing the pin to the locking member, the frangible means being breakable to remove the pin from the recess so that the housing can be removed to provide access to the operating nut.

A tamper-proof cover for the operating nut of a hydrant, the cover comprising:

• a housing adapted to be positioned above the operating nut for covering the operating nut;
• mounting means securable to the hydrant and engageable with the housing for securing the housing to the hydrant;
• the mounting means having a passageway and the housing having a tab for engagement in the passageway;
• and
• locking means for securing the tab in the passageway to prevent removal of the housing from the mounting means;
• the mounting means including a ring-shaped ledge having a plurality of holes corresponding to bolt positions in the hydrant and an inwardly extending lip at an end of the mounting means opposite the ledge;
• the housing is disk-shaped with external dimensions slightly greater than that of the lip;
• the mounting means including an opening in a side portion thereof;
• and in a side portion thereof;
• and
• the locking means including a pin positionable in the opening in the mounting means and engageable with a recess defined in the tab, a locking member engageable with the pin and a recess in the mounting means, a frangible shoulder within the recess in the tab against which the locking member seats and which must be broken to slidably remove the pin from the recess so that the housing can be removed to provide access to the operating nut.

A tamper-proof cover for the operating nut of a hydrant, the cover comprising:

• a domed-shaped housing adapted to be positioned above the operating nut and completely covering the operating nut, an extension on a side portion of the housing and a circular hole in the housing within the extension;
• a housing mounting ring securable to the hydrant, the ring having means providing a cylindrical recess therein positionable in alignment with the opening in the housing;
• the ring and the housing each having a plurality of mating flanges which are covered by the housing when mutually engaged and which are radially spaced around the housing and ring such that rotation of the housing relative to the mounting ring causes engagement and disengagement of the flanges;
• and
• locking means for preventing rotation of the housing relative to the ring, including a cylindrical pin positionable in the hole in the housing and matingly engageable with the cylindrical recess when the recess and a hole are aligned, the means providing the recess having a frangible shoulder within the recess spaced from but adjacent the pin, the pin having a groove therein adjacent the shoulder and a ring fitted in the groove and engaging the shoulder when the pin with the ring is inserted in the recess whereby the pin cannot be removed without the ring breaking the shoulder, the pin being slidably removable from the recess upon breaking the shoulder so that the housing can be removed to provide access to the operating nut.

A tamper-proof cover for the operating nut of a hydrant, the cover comprising:

• a disk-shaped housing adapted to be positioned above the operating nut for covering the operating nut, a tab extending from the housing and a circular hole in the tab;
• a mounting securable to the hydrant and having means providing a cylindrical recess therein positionable in alignment with the opening in the housing;
• the mounting having a passageway, the tab being engageable in the passageway, the mounting being covered by the housing when the housing and mounting are engaged;
• and
• locking means for securing the housing to the mounting, including a cylindrical pin positionable in the hole in the tab and matingly engageable with the cylindrical recess when the recess and hole are aligned, the locking means providing the recess having a frangible, shoulder within the recess spaced from but adjacent the pin, the pin having a groove and engaging the shoulder when the pin with the ring is inserted in the recess whereby the pin cannot be removed without the ring breaking the shoulder, the pin being slidably removable from the recess upon breaking the shoulder so that the housing can be removed to provide access to the operating nut.

A tool for unlocking locking means for removably securing a housing for covering an operating nut of a hydrant to mounting means for securing the housing to the hydrant, the locking means including a pin positionable in an opening in the housing and engageable with a recess defined in the mounting means, a locking member engageable with the pin and the recess in the mounting means, a frangible shoulder within the recess in the mounting means against which the locking member seats and which must be broken to slidably remove the pin from the recess so that the housing can be removed to provide access to the operating nut;

• the tool;
• comprising:
• a block having a cavity in one end thereof;
• a pawl mounted in the block for pivotal movement into and out of the cavity for engaging a circumferential groove in the pin inserted in the caviy and preventing removal of the pin from the cavity;
• and
• a camming member pivotally mounted to the block at another end thereof remote from the one end in which the cavity is formed, the camming member having a pair of semi-cylindrical end portions disposed on opposite sides of the block and eccentric to the pivotal mounting on the block so that as the camming member is pivoted the distance from the one end of the block to the semi-cylindrical end portions of the camming member will change.