E - Fixed Constructions – 04 – G
Patent
E - Fixed Constructions
04
G
248/8.5
E04G 25/02 (2006.01)
Patent
CA 1106339
P-301 ABSTRACT OF THE DISCLOSURE This invention relates to a trench shoring assembly which includes a pair of spaced-apart side walls for vertical disposition within a trench. Spreader pipes and spreader collars interconnect the side walls and allow limited pivotal movement between the side walls. Each side wall includes outer and inner metal plates connected to a horizontally extending hollow top beam which extends longitudinally along the top of the side wall, two intermediate beams parallel the hollow metal beam and a bottom beam. A hardwood insert is disposed within the top beam to pre- vent the collapse of the hollow metal beam. A number of hollow beams extend perpendicularly to the horizontal beams. The members extend perpendicularly to the horizontal beams. The side walls of the assembly have a tapered bottom portion which defines a triangularly shaped pointed lower extremity extending between the ends of the bottom portion. A metallic bar is dis- posed at the pointed lower extremity and extends between the ends of the bottom portion and protects the bottom of the side wall against abrasion. A U-shaped member is welded to the main frame, and, in turn, a spreader collar is welded to the U-shaped member so that a force applied to the spreader collar is transferred directly to the main frame. Each spreader pipe spaces the side walls apart between two spreader collars to which the spreader pipe is attached by spreader pins. Lifting rings are slidably attached to the spreader pins. Lifting rings are slidably plurality of flanges extend from spreader pipe and are connec- ted by locking pins to mating flanges which extend from another spreader pipe of another vertically stacked trench shoring assembly.
270911
Griswold James L.
Smart & Biggar
LandOfFree
Trench shoring assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Trench shoring assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Trench shoring assembly will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-48291