OPENING/CLOSING DEVICE
AN OPENING/CLOSING DEVICE 1 ACCORDING TO THE PRESENT INVENTION INCLUDES A GATE 10 THAT RECEIVES A FLOW OF A SEWAGE W IN AN UPRIGHT STATE, AND CAN FALL TOWARD A DOWNSTREAM SIDE OF THE FLOW AND A FIRST SPRING 52A THAT GENERATES A FORCE FOR BRINGING THE GATE 10 INTO AN UPRIGHT STATE, WHEREIN THE FIRST...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | AN OPENING/CLOSING DEVICE 1 ACCORDING TO THE PRESENT INVENTION INCLUDES A GATE 10 THAT RECEIVES A FLOW OF A SEWAGE W IN AN UPRIGHT STATE, AND CAN FALL TOWARD A DOWNSTREAM SIDE OF THE FLOW AND A FIRST SPRING 52A THAT GENERATES A FORCE FOR BRINGING THE GATE 10 INTO AN UPRIGHT STATE, WHEREIN THE FIRST SPRING 52 GENERATES A FORCE INSUFFICIENT FOR BRINGING THE GATE 10 INTO THE UPRIGHT STATE IF THE GATE 10 IS IN A FALLEN STATE, AND GENERATES A FORCE SUFFICIENT FOR BRINGING THE GATE INTO THE UPRIGHT STATE IF THE GATE 10 IS TILTED BY AN ANGLE EQUAL TO OR LESS THAN A PREDETERMINED ANGLE. |
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