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A ratchet and cam buckle tensioning assembly or strap tensioner, interposed between a lashing strap tensioned by the ratchet buckle and a lead strap tensioned by the cam buckle. The invention enables an operator to quickly and conveniently pre-tension the lashing and lead straps by removing an un-te

A ratchet and cam buckle tensioning assembly or strap tensioner, interposed between a lashing strap tensioned by the ratchet buckle and a lead strap tensioned by the cam buckle. The invention enables an operator to quickly and conveniently pre-tension the lashing and lead straps by removing an un-tensioned length of the lead strap without having to operate the ratchet buckle. The tensioning assembly includes a ratchet buckle for tensioning the lashing strap in stepped increments and a cam buckle for slidingly adjusting the lead strap. The cam buckle housing and the ratchet buckle frame member are a unitary member, forming an single, integrated tensioning assembly. Alternately, the cam buckle is permanently attached adjacent to the ratchet buckle. The cam buckle includes a housing adapted to slidably receive the lead strap. The housing has a pressure plate with a first restraining surface, such as a friction surface, over which the lead strap slides. A pawl is movably mounted, such as by pivoting, to the housing. The pawl has a second restraining surface and is biased in an engaged position to restrain the lead strap between the first and second restraining surfaces so as to prevent movement of the lead strap in one or both directions. The pawl also may assume a disengaged position wherein the lead strap can move freely between the first and second restraining surfaces.

대표청구항 ▼

A ratchet and cam buckle tensioning assembly or strap tensioner, interposed between a lashing strap tensioned by the ratchet buckle and a lead strap tensioned by the cam buckle. The invention enables an operator to quickly and conveniently pre-tension the lashing and lead straps by removing an un-te

A ratchet and cam buckle tensioning assembly or strap tensioner, interposed between a lashing strap tensioned by the ratchet buckle and a lead strap tensioned by the cam buckle. The invention enables an operator to quickly and conveniently pre-tension the lashing and lead straps by removing an un-tensioned length of the lead strap without having to operate the ratchet buckle. The tensioning assembly includes a ratchet buckle for tensioning the lashing strap in stepped increments and a cam buckle for slidingly adjusting the lead strap. The cam buckle housing and the ratchet buckle frame member are a unitary member, forming an single, integrated tensioning assembly. Alternately, the cam buckle is permanently attached adjacent to the ratchet buckle. The cam buckle includes a housing adapted to slidably receive the lead strap. The housing has a pressure plate with a first restraining surface, such as a friction surface, over which the lead strap slides. A pawl is movably mounted, such as by pivoting, to the housing. The pawl has a second restraining surface and is biased in an engaged position to restrain the lead strap between the first and second restraining surfaces so as to prevent movement of the lead strap in one or both directions. The pawl also may assume a disengaged position wherein the lead strap can move freely between the first and second restraining surfaces. e diaphragm and an annular guide member having two ends, the first end attached to an inner edge of the diaphragm and an annular guide member having two ends, the first end attached to an inner edge of the diaphragm adjacent to the sealing surface and defining a relief valve seat and central opening, and the second end extending from the second side of the diaphragm; a resilient, flexible, solid refill ring attached to the exterior of the guide member abutting the sealing surface of the diaphragm; a relief valve resting above and extending through the central opening of the guide member and configured to seal against the relief valve seat; and an elongated passage in fluid communication with the outlet connection, the passage having a distal end defining a valve seat configured to contact the sealing surface of the diaphragm, wherein a portion of the guide member is configured to travel within and relative to the passage during the operation of the flush valve, an operating cycle initiated by unseating the relief valve from the relief valve seat thereby venting the portion of the flush valve between the first side of the diaphragm and the valve body, and wherein the refill ring is an O-ring positioned for contact with the interior of the passage and provides yielding frictional resistance to movement of the valve assembly relative to passage to thereby dampen vibration of said valve assembly during the closing portion of the flush valve operating cycle and control the flow of water through the flush valve. 22. The apparatus of claim 21, wherein the refill ring is an O-ring made from at least one of rubber and polymeric material. 23. The apparatus of claim 21, wherein the refill ring is of a circular cross-section. 24. A valve assembly configured to co-act with a flush valve comprising: an annular flexible diaphragm having a mounting portion at a peripheral edge for mounting the valve assembly within the flush valve, the diaphragm having a first side and a second side and defining an orifice extending from the first side to the second side and a sealing surface on the second side and adjacent to an inner edge of the diaphragm; an annular guide member having two ends, the first end attached to the inner edge of the diaphragm adjacent to the sealing surface and defining a relief valve seat and central opening, and the second end extending from the second side of the diaphragm; and a resilient, flexible, solid refill ring attached to the exterior of the guide member abutting the sealing surface of the diaphragm, said refill ring is an O-ring, wherein a portion of the guide member is configured to travel within and relative to a passage of the flush valve during the operation of the flush valve, and wherein the refill ring is positioned for contact with the interior of the passage and provides yielding frictional resistance to movement of the valve assembly relative to the passage to thereby dampen vibration of said valve assembly during the closing portion of the flush valve operating cycle and control the flow of water through the flush valve. 25. The apparatus of claim 24, wherein the refill ring is made from at least one of rubber and polymeric material. 26. The apparatus of claim 24, wherein the refill ring is of a circular cross-section. 27. A flush valve, comprising: a body having an inlet and outlet, a passage connecting said inlet and outlet; a valve seat at one end of the passage, a valve assembly in said body incl