Valve locking device

Claim 2

A stem locking device for a valve having a body, a rotatable stem and a handle secured to the stem for manual rotation of same between two positions, said locking device comprising: a. a fixed locking member and a movable locking member; b. said fixed locking member being mountable on a valve body; c. said movable locking member being mountable on a handle for relative movement outwardly and inwardly relative to said valve body, and d. interfitting cooperating means on said fixed locking member and said movable locking member engageable at one position upon inward movement of said movable locking member relative to said fixed locking members to prevent rotation of said handle.

Claim 3

The locking device of claim 1, additionally including means on said interfitting and cooperating means to receive and mount a lock to secure said interfitting and cooperating means for securing said handle from rotation when positioned in one position.

Claim 4

The locking device of claim 2, additionally including means on said movable locking member to enclose and cover the juncture of said handle and said rotatable stem for preventing tampering with and removing said handle from said rotatable stem when said locking device is secured and locked.

Claim 5

The locking device of claim 3, additionally including means on said fixed locking member cooperating with said means to enclose and cover on said movable locking member to enclose the juncture of said handle and said rotatable stem at a point of attachment of said valve body and said fixed locking member for preventing tampering with mounting of said locking members and said handle when secured and locked.

Claim 6

The locking device of claim 4, wherein: a. said interfitting and cooperating means has a lug member on said fixed locking member and an aperture through said movable locking member, said lug being engageable in said aperture in an interfitting and cooperating relation when said valve handle is in a first position, and b. said lug having said means to mount a lock.

Claim 7

The locking device of claim 5, wherein: a. said movable locking member having a handle receiving aperture therethrough for receiving said handle and mounting said movable locking member on said handle, and b. said movable locking member having another aperture therethrough positioned in a spaced relation to said first named aperture for engaging said lug when said valve handle is in a second position.

Claim 8

The locking device of claim 6, wherein: a. said fixed locking member has a base portion mountable on said valve body and a side wall extending from the perimeter of said base portion, and b. said means to enclose and cover on said movable locking member has a top member having said apertures therethrough and having a side wall extending from the perimeter thereof, said movable locking member side wall being cooperatively engageable with said fixed locking member side wall for enclosing said juncture of said handle and said valve stem and for enclosing said point of attachment of said valve body and said fixed locking member.

Claim 9

In a valve having a body, a rotatable stem, and a handle secured to the stem for manual rotation of the stem between two positions, a locking device comprising: a. a fixed locking member mounted on said valve body, b. a movable locking member mounted on said handle for relative movement inwardly and outwardly relative to said valve body, and c. interfitting means on said movable locking member on said fixed locking member being engageable at one position upon inward movement of said movable locking member toward said valve body to prevent rotation of said handle and said stem.

Claim 10

In a valve having a body, a rotatable stem, and a handle secured to the stem for manual rotation of the stem between two positions, a locking device comprising: a. a fixed locking member mounted on said valve body, b. a movable locking member mounted on said handle for relative movement inwardly and outwardly relative to said valve body, and c. interfitting means on said movable locking member on said fixed locking member being engageable at one position upon inward movement of said movable locking member toward said valve body to prevent rotation of said handle and said stem.

Claim 11

The locking device of claim 8, additionally including: a. means on said interfitting and cooperating means to receive and mount a lock to secure said interfitting and cooperating means when positioned in one position, b. means on said movable locking member to enclose and cover the juncture of said handle and said rotatable stem for preventing tampering with and removing said handle from said rotatable stem when said locking device is secured and locked, and c. means on said fixed locking member cooperating with said means to enclose and cover on said movable locking member to enclose the juncture of said handle and said rotatable stem at a point of attachment of said valve body and said fixed locking member for preventing tampering with mounting of said locking members and said handle when secured and locked.

Claim 12

The locking device of claim 9, wherein: a. said interfitting and cooperating means has a lug member on said fixed locking member and a lug receiving aperture through said movable locking member, said lug being engageable in said aperture in an interfitting and cooperating relation when said valve handle is in a first position, and b. said lug having an aperture therethrough to receive and mount a locking bolt of a lock.

Claim 13

The locking device of claim 10, wherein: a. said movable locking member has a top member having a handle receiving aperture therethrough for receiving said handle and mounting said movable locking member on said handle, and another lug receiving aperture through said top member positioned in a spaced relation to said first named lug receiving aperture for engaging said lug when said valve handle is in a second position, b. said fixed locking member has a base portion mountable on said valve body, and a side wall extending from a portion of the perimeter of said base portion, and c. said means on said movable locking member to enclose and cover has a side wall extending from a portion of the perimeter of said top member to cooperatively engage said fixed locking member side wall.

Claim 14

A stem locking device for a valve having a body, a rotatable stem and a handle secured to the stem for manual rotation of same between two positions, said locking device comprising: a. a fixed locking member and a movable locking member, b. said fixed locking member being rigidly mountable on a valve body, c. said movable locking member having an opening therethrough for mounting handle for relative movement outwardly and inwardly relative to said valve body, d. interfitting cooperating means on said fixed locking member and said movable locking member having a male member extending from said fixed locking member and having an aperture through said movable locking member with said male member being engageable in said aperture at one of said positions upon inward movement of said movable locking member relative to said fixed locking member to prevent rotation of said handle, and e. means on said movable locking member to enclose said handle at the juncture of said rotatable stem for preventing tampering with and to preclude removal of said handle from said rotatable stem when said movable locking member is secured to said fixed locking member.

Claim 15

A stem locking device for a valve having a body, a rotatable stem and a handle secured to the stem for manual rotation of same between two positions, said locking device comprising: a. a fixed locking member and a movable locking member, b. said fixed locking member being rigidly mountable on a valve body, c. said movable locking member having an opening therethrough for mounting handle for relative movement outwardly and inwardly relative to said valve body, d. interfitting cooperating means on said fixed locking member and said movable locking member having a male member extending from said fixed locking member and having an aperture through said movable locking member with said male member being engageable in said aperture at one of said positions upon inward movement of said movable locking member relative to said fixed locking member to prevent rotation of said handle, and e. means on said movable locking member to enclose said handle at the juncture of said rotatable stem for preventing tampering with and to preclude removal of said handle from said rotatable stem when said movable locking member is secured to said fixed locking member.