초록 ▼

A modular pile system. The pile system comprises first and second cylindrical plastic pile members and a detent system. Each of the pile members has an upper end and a lower end. The detent system connects the upper end of the first pile member to the lower end of the second pile member. The detent

A modular pile system. The pile system comprises first and second cylindrical plastic pile members and a detent system. Each of the pile members has an upper end and a lower end. The detent system connects the upper end of the first pile member to the lower end of the second pile member. The detent means allow the second pile member to be displaced into a desired position relative to the first pile member but substantially prevent relative movement between the first and second pile members when the second pile member is in the desired position.

대표청구항 ▼

A modular pile system. The pile system comprises first and second cylindrical plastic pile members and a detent system. Each of the pile members has an upper end and a lower end. The detent system connects the upper end of the first pile member to the lower end of the second pile member. The detent

A modular pile system. The pile system comprises first and second cylindrical plastic pile members and a detent system. Each of the pile members has an upper end and a lower end. The detent system connects the upper end of the first pile member to the lower end of the second pile member. The detent means allow the second pile member to be displaced into a desired position relative to the first pile member but substantially prevent relative movement between the first and second pile members when the second pile member is in the desired position. pal and intermediate product strands together with auxiliary product strands forming that portion of mesh bars which exhibit the hydrofoil-like effect are arranged to have a cross-sectional shape approximating that of a strap.8. The trawl of claim 1 wherein straps, that form portions of that portion of mesh bars which exhibit the hydrofoil-like effect, have a parallelogram cross-sectional shape.9. The trawl of claim 8 wherein the parallelogram-shaped straps have a pointed leading edge.10. The trawl of claim 8 wherein said mesh bars are formed by a principal product strand and a pair of intermediate product strands juxtaposed with diametrically opposite sides of the principal product strand to thereby establish the strap having an approximately parallelogram cross-sectional shape.11. The trawl of claim 8 wherein said mesh bars are formed by a product strand that is enclosed within a sheath that is gathered along at least one side of the product strand to form an outwardly projecting ridge to thereby establish the strap having an approximately parallelogram cross-sectional shape.12. The trawl of claim 1 wherein straps, that form portions of that portion of mesh bars which exhibit the hydrofoil-like effect, have a hexagonal cross-sectional shape.13. The trawl of claim 1 wherein straps, that form portions of that portion of mesh bars which exhibit the hydrofoil-like effect, have a triangular cross-sectional shape.14. The trawl of claim 1 wherein portions of that portion of mesh bars which exhibit the hydrofoil-like effect are made of straps which have a drooping leading edge and a raised trailing edge.15. The trawl of claim 1 wherein portions of that portion mesh bars which exhibit the hydrofoil-like effect are made of straps which include angled shaping strips that project from side surfaces of the straps.16. The trawl of claim 1 wherein the loose, corkscrew-shaped pitch for that portion of mesh bars which exhibit the hydrofoil-like effect that consist of a pair of product strands is in a range of3cto70d, where d is a diameter of a smaller product strand of the pair.17. The trawl of claim 16 wherein the loose, corkscrew-shaped pitch is in the range of5dto55d.18. The trawl of claim 16 wherein the loose, corkscrew-shaped pitch is in the range of5dto15dfor maximum lift.19. The trawl of claim 16 wherein the loose, corkscrew-shaped pitch is in the range of25dto55dfor minimum drag.20. The trawl of claim 1 wherein the loose, corkscrew-shaped pitch for that portion of mesh bars which exhibit the hydrofoil-like effect are formed by more than a pair of product strands having differing diameters is in a range of3dto70d, where d is a diameter of a next-to-largest product strand.21. The trawl of claim 20 wherein the loose, corkscrew-shaped pitch is in the range of5dto55d.22. The trawl of claim 20 wherein the loose, corkscrew-shaped pitch is in the range of5dto15dfor maximum lift.23. The trawl of claim 20 wherein the loose, corkscrew-shaped pitch is in the range of25dto55dfor minimum drag.24. The trawl of claim 1 wherein the loose, corkscrew-shaped pitch for that portion of mesh bars which exhibit the hydrofoil-like effect that are formed by a strap is in a range of3dto70d, where d is a width of the strap.25. The trawl of claim 24 wherein the loose, corkscrew-shaped pitch is in the range of8dto30dfor maximum lift.26. The trawl of claim 24 wherein the loose, corkscrew-shaped pitch is in the range of9dto21dfor minimum drag.27. The trawl of claim 1 wherein portions of that portion of mesh bars which exhibit the hydrofoil-like effect are made of straps having a ratio of a width of the strap to a thickness of the strap in a range of 1.5:1 to 20:1.28. The trawl of claim 27 wherein the ratio is in the range 2.75:1 to 10.0:1 that provides high lift.29. The trawl of claim 27 wherein the ratio is in the range 1.8:1 to 2.5:1 which provides low drag with good lift.30. The trawl of claim 27 wherein the ratio is in the range 1.5:1 to 1.8:1 that provides low