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US 5,000,621 AGranted
Apparatus for forming a trench
AssigneeConstruction Casting Company
InventorJohn V. Beamer
Life of this patent
Estimating the term…
Abstract
A device for forming a trench having a pair of frame members each having a first adjustment slot therethrough, a form pan having sidewalls, the sidewalls having an adjustment slot in registration with the first adjustment slot of the frame members, and means for adjustably securing the form pan to the frames through the first and second adjustment slots to allow positioning of the form pan relative to the frames.
Claims55
A device for forming a trench comprising:
- (a) a pair of frame members each having a first adjustment slot therethrough;
- (b) a form pan having sidewalls and a bottom surface disposed between said sidewalls, said sidewalls having a second adjustment slot in registration with said first adjustment slot of said frame members;
- (c) means for maintaining said frame members in position relative to ground;
- and
- (d) means for adjustably securing said form pan to said frames through said first and second adjustment slots to allow positioning of the bottom surface of said form pan on a choice of planes relative to the plane of said frame members.
2 more elements
A device for forming a trench comprising:
- (a) a pair of frame members;
- (b) a form pan having sidewalls and a bottom surface disposed between said sidewalls and attached to said frame members;
- and
- (c) anchoring means attached to said frame members capable of providing adjustment of said frame members relative to the ground and to each other.
1 more element
A system for forming a trench, comprising a plurality of trench forming devices, each said device comprising:
- (a) a pair of frame members each having a first adjustment slot therethrough;
- (b) a form pan having sidewall, said sidewalls having an adjustment slot in registration with said first adjustment slot of said frame members;
- (c) means for adjustably securing said form pan to said frame members through said first and second adjustment slots to allow positioning of said form pan relative to said frame members;
- and
- (d) anchoring means attached to said frames capable of providing adjustment of said frame members relative to the ground and to each other;
- wherein said devices are placed adjacent to each other.
3 more elements
Dependencies are inferred from the claim text.