Other

Lydall, Inc.

John K Fletcher

John J Hiers

A needled composite acoustical barrier is provided. The barrier has a non-woven first layer (,) of needleable textile first fibers (,); the layer (,) has a thickness of between about 0.01 inch and 0.5 inch and a density of between about 1.0 and 10 lbs. per cubic foot. A non-woven, low density second layer (,) of textile second fibers (,) is provided; the second layer (,) has a thickness of between about 0.2 inch and 5 inches and a density of between about 0.1 and 4.0 lbs. per cubic foot. A high-density intermediate acoustical barrier layer (,) is disposed between the first and second layers (,); the intermediate barrier layer (,) has a thickness of between about 0.01 inch and 0.5 inch, a density of at least 50 lbs. per cubic foot, and the barrier layer has a substantially continuous film of high-density needleable polymeric material. A plurality of needled stitches (,), formed from the first fibers (,), extend from the first layer (,), through the intermediate barrier layer (,) and at least into the second layer (,).

Acoustical insulating barrier and method of making the barrier

A needled composite acoustical barrier is provided. The barrier has a non-woven first layer (13) of needleable textile first fibers (13a); the layer (13) has a thickness of between about 0.01 inch and 0.5 inch and a density of between about 1.0 and 10 lbs. per cubic foot. A non-woven, low density second layer (15) of textile second fibers (15a) is provided; the second layer (15) has a thickness of between about 0.2 inch and 5 inches and a density of between about 0.1 and 4.0 lbs. per cubic foot. A high-density intermediate acoustical barrier layer (14) is disposed between the first and second layers (13, 15); the intermediate barrier layer (14) has a thickness of between about 0.01 inch and 0.5 inch, a density of at least 50 lbs. per cubic foot, and the barrier layer has a substantially continuous film of high-density needleable polymeric material. A plurality of needled stitches (19), formed from the first fibers (13a), extend from the first layer (13), through the intermediate barrier layer (14) and at least into the second layer (15).

Coupling apparatus for facilitating disengaging sling-like elongated flexible members from the load of lumber pieces being cradled therein. The apparatus includes a pair of hooks which are selectively driven between normal and couple/uncouple positions. A pair of sling-eyes are attached to one of the respective ends of the elongated flexible members and the sling-eyes are adapted for respective cooperative engagement and disengagement with the pair of hooks. Each flexible member passes through a sling-guide which operatively engages the sling-eye or presents it to the hook for recoupling as the flexible member is almost completely taken up by a winch. Subsequently, the hooks are moved to the normal position and the flexible members are sufficiently slackened for reloading.

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Winston-Salem, NC, United States of America

John K Fletcher