# US 4,498,807 A · Drainage channel with means for maintaining proper slope during installation > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 4,498,807 A - Document ID: US4498807A - Status: Granted - Kind: A - Application number: 06/530,271 - Filed: 1983-09-08 - Granted: 1985-02-12 - Earliest claimed: 1983-09-08 - Assignees: Polydrain, Inc. - Inventors: Larry E. Kirkpatrick; Barry C. Williams - Web page: https://patentgrep.com/patent/US4498807A ## CPC - E03F 3/046: {Open sewage channels} - E01C 11/227: {Gutters; Channels (E01C11/223 takes precedence; permanently installed flushing means E01H3/04); Roof drainage discharge ducts set in sidewalks} - Y02A 30/60: Planning or developing urban green infrastructure - E03F: SEWERS; CESSPOOLS - E01C: CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR (forming roads or like surfaces by compacting or grading snow or ice E01H) - Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE ## Abstract An anchor 20 is disclosed for supporting an open top drainage channel 40 within a trench. Anchor 20 permits accurate placement and easy adjustment of channel 40 and thereafter permits the entire channel 40 to be embedded in concrete in a single pour. The anchor 20 is embedded within the earth defining the trench and counteracts the natural buoyancy so that channel 40 does not float upwardly in the unhardened concrete. ## Claims ### Claim 1 In a line, such as a drainage channel, for being embedded in a trench in concrete at a pre-determined slope, said line being defined by an elongate body having outer walls and inner, spaced-apart walls defining a fluid-carrying space therebetween, the improvement which comprises anchor means for maintaining proper slope during installation of the line in concrete by counteracting the buoyancy of the line, said anchor means including: (a) at least one relatively long spike for being inserted into earth defining the trench; (b) clasp means carried by said spike; and, (c) connecting means carried by the outer walls of said channel for connecting to and cooperating with said clasp means to retain the channel at its proper slope while the concrete is poured around the channel until the concrete hardens by preventing the channel from floating upwardly in the unhardened concrete; said connecting means comprising an outwardly projecting rib extending along the length of the channel and said clasp includes a detent for being placed over the upper surface of the rib in channel-retaining relation thereto. ### Claim 2 (depends on 1) In a line according to claim 1, wherein said connecting means comprises an outwardly projecting rib extending along the length of opposite sides of said channel and wherein said clasp means includes a pair of spaced-apart arms for embracing the lower extent of the channel, and a detent on the free end of each arm for being placed over the upper surface of the rib in channel-retaining relation thereto. ### Claim 3 (depends on 2) In a line according to claim 2, wherein one of said detents includes adjustment means for selectively loosening and tightening said arm and said detents relative to said channel and said ribs, respectively. ### Claim 4 (depends on 3) In a line according to claim 3, wherein said adjustment means comprises a bolt threaded through one or the other of said arms for being selectively engaged and disengaged with a respective one of said ribs. ### Claim 5 In a drainage channel of the type characterized by having opposing side walls, a bottom wall and a top opening opposite said bottom wall for receiving fluid into said channel, said side and bottom walls having an outer surface, and an inner surface, of said side walls collectively defining a fluid-carrying space therebetween, the improvement which comprises anchor means for maintaining proper slope in the drainage channel during installation thereof in a trench in concrete by counteracting buoyancy of the channel, said means including: (a) at least one relatively long spike for being inserted into earth defining the trench; (b) clasp means carried by said spike; and, (c) connecting means carried by the outer walls of said channel for connecting to and cooperating with said clasp means to retain the channel at its proper slope while the concrete is poured around the channel until the concrete hardens by preventing the channel from floating upwardly in the unhardened concrete; said connecting means comprising a rib projecting outwardly from the outer surface of each said opposing side walls of said channel and wherein said clasp includes a pair of spaced-apart arms for embracing the channel and a detent on the free end of each arm for being placed over the upper surface of each of said ribs in channel-retaining relation thereto. ### Claim 6 (depends on 5) In a drainage channel according to claim 5, wherein said ribs are integrally formed in said opposing side walls. ### Claim 7 (depends on 6) In a drainage channel according to claim 6, wherein said ribs extend substantially along the length of said channel. ### Claim 8 (depends on 5) In a drainage channel according to claim 5, wherein one of said detents includes adjustment means for selectively loosening and tightening said arms and detents relative to said channel and said ribs, respectively. ### Claim 9 (depends on 8) In a drainage channel according to claim 8, wherein said adjustment means comprises a bolt threaded through said one arm for being selectively engaged and disengaged with said rib. ### Claim 10 (depends on 5) In a drainage channel according to claim 5, wherein said anchor includes a pair of spikes secured together in parallel, spaced-apart relation. ### Claim 11 (depends on 5) In a drainage channel according to claim 5, wherein said arms are shaped to correspond to the shape of the bottom wall of said channel and rest against the bottom wall of said channel in upwardly supporting relation thereto.