128592 ⎘
underground or underwater structures Independent ; Retaining walls; Manhole shafts; Other inspection or access chambers; Accessories therefor; Covers for manholes or the like; Frames for covers with implements to assist in lifting, e.g. counterweights, springs
HYBRID HAND HOLE
#2DEVICE FOR ACCESSING AN UNDERGROUND FACILITY, COMPRISING AN ADJUSTABLE ASSISTANCE CYLINDER
#3FRAME AND COVER FOR INGROUND UTILITY ENCLOSURES
#4ELECTRONIC WELL LID BASED ON ELECTRIC CONTROL TRAVEL SWITCH CONTROL
#5Securable Temporary Manhole or Catch Basin Cover
#6MODULAR ACCESS COVER
#7Pier hatch control system
#8VERTICAL MANHOLE APPARATUS AND METHOD FOR PROVIDING ACCESS TO LEACHATE COLLECTION PIPES IN A LANDFILL
#9MULTIPURPOSE DEVICE
#10Manhole adjustment ring removal assembly and method
#11Manhole apparatus
#12Vertical manhole apparatus and method for providing access to leachate collection pipes in a landfill
#13Manway open and close assist device
#14Vertical manhole apparatus and method for providing access to leachate collection pipes in a landfill
#15Cover grate for well-site cellars
#16Pick hole guard for manhole covers
#17Integrated safety rail protection system
#18Multipurpose device
#19Cover of traps or manholes equipped with a mechanism for lifting and horizontally translating the cover
#20Pressure responsive locking latch arrangement for manhole covers
#21Controlled pressure release manhole cover assembly
#22Access door with lift assist
#23Device to assist the opening of a covering element pivotably mounted relative to an edge of a frame
#24Pick hole guard for manhole covers
#25Fastener for street ironwork, assembly, street ironwork and corresponding method
#26Hinge assembly and corresponding road device
#27Pick hole guard for manhole covers
#28HIGHWAY DEVICE, IN PARTICULAR MANHOLE, WITH FRAME AND PLUG WITH BACKWARD MOVEMENT RELATIVE TO THE FRAME TO ENSURE THE CLOSED POSITION OF THE PLUG IN THE FRAME
#29Integrated safety rail protection system
#30Under-ground raise, manhole, vault, or man-way safe entry/exit system
#31Manhole cover security and removal
#32Method and mechanism for opening and closing of manhole covers
#33Vault cover with vault door and spring-biased support arm
#34Opening/closing device for manhole cover
#35PICK HOLE GUARD FOR MANHOLE COVERS
#36LIFT-ASSISTED MANHOLE COVER
#37Security Device
#38Manhole system
#39Swing-out manhole cover
#40Manhole cover security lock with controlled pressure release
#41Lift-assisted manhole cover
#42Frame and corresponding roadway device
#43Device for closing a frame having a panel articulated on the frame
#44Manhole cover removal apparatus and method of use
#45Frame for a recess in the ground and manhole assembly
#46Lifting mechanism for access hatch
#47Horizontal door lift
#48Locatable slab assembly