Dewar bottle valve lockout cover

Abstract

A lockout cover for restricting access to ports, valves, regulators and/or gauges shielded by a halo handling ring on top of a Dewar bottle. The lockout cover includes a cap seatable on the halo ring. A hatch on a side of the cap can be pivoted between an open position to allow access to the ports, valves, regulators and gauges, and a closed position to allow locking the cap to the halo ring to block access to the ports, valves, regulators and gauges.

1 . A cover for a Dewar bottle having a halo ring mounted above a port on top of the bottle, comprising:
 cap means seatable on the halo ring to block access to the port; and   lockable closure means for holding the cap means on the halo ring.   
   
   
       2 . A cover for a Dewar bottle having a circumferential dimension centered on a perpendicular axis, and an end with a handle ring centered on the axis, the cover comprising:
 cap means having an inner side and an outer side; catch means pivotally attached to the cap means for rotating from an open position to a closed position where the catch means prevents removal of the cap means from the handle ring; and   locking means to facilitate locking the catch means in the closed position.   
   
   
       3 . The cover of  claim 2  wherein the cap means comprises: a cylindrical wall member and a planar lid member. 
   
   
       4 . The cover of  claim 3  further comprising seating means on the inner side for limiting movement of the cap means relative to the handle ring. 
   
   
       5 . The cover of  claim 4  wherein the seating means comprises at least one hook. 
   
   
       6 . The cover of  claim 5  wherein the seating means comprises at least one pair of hooks. 
   
   
       7 . The cover of  claim 5  wherein the seating means comprises at least one abutment. 
   
   
       8 . The cover of  claim 3  wherein:
 the cylindrical wall member has wall ends with outward turned tabs separated by a gap;   the catch means comprises a catch box having side panels spaced apart by a distance similar to the width of the gap; and   the locking means comprises slots in each of the tabs and side panels that line up when the catch box is rotated to a closed position, and a bolt having a head, a shaft that slides through the slots, and a shaft tip with a hole.   
   
   
       9 . The cover of  claim 8  wherein the catch box has a bottom panel with a scalloped recess to permit passage of a hose. 
   
   
       10 . The cover of  claim 3  wherein the cylindrical wall member has perforations. 
   
   
       11 . A cover for a Dewar bottle having a handle ring protecting valves and ports, the cover comprising:
 a cap formed of a cylindrical wall and a lid, the cylindrical wall having a circumferential periphery surrounding the handle ring and the cap covering the controls and ports;   a catch box giving access to a valve or port, pivotally mounted to a peripheral region of the cap and having an open position and a closed position, the catch box having a hook engaging the handle ring in the closed position; and   locking means for holding the catch box in the closed position to secure the valve or port.