Locks – Special application – For control and machine elements
Patent
1979-01-29
1981-11-17
Lyddane, William E.
Locks
Special application
For control and machine elements
70164, 70178, 70DIG56, 70DIG57, 166113, 285 80, F16B 4100
Patent
active
043003737
ABSTRACT:
An oil or gas well Christmas tree guard apparatus provides an annular guard body which is protectively secured about a bolted flanged connection of the well Christmas tree, the guard so placed forming an envelope about the flanged connection and preventing access by a thief to the bolts and thus discouraging removal of the bolts from the bolted connection. The protective guard body thus prevents removal of the Christmas tree from its location at the well head by theft denying access to the bolted connection which flanges the Christmas tree to the remainder of the well. In the preferred embodiment the guard body provides a pair of annular shroud halves which are hingedly connected allowing them to be pivotally moved from an outer position allowing removal from the flanged connection to an inner closed operative position providing an overall annular guard body which is latched into position about the desired bolted connection. The guard body hinge as well as the latch structure can be protectively covered by a connected shroud or housing about the latch structure, or the hinge respectively.
REFERENCES:
patent: 122396 (1872-01-01), McIlhenny
patent: 725290 (1903-04-01), Speer
patent: 2048424 (1936-07-01), Caldwell
patent: 2641124 (1953-06-01), Gallagher et al.
Camos Walter M.
Doize William L.
Garvey, Jr. Charles C.
Lyddane William E.
LandOfFree
Well Christmas tree guard apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Well Christmas tree guard apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Well Christmas tree guard apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1287014