IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0795666
(2001-02-27)
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발명자
/ 주소 |
- Sweeney, Lance Michael
- Sweeney, Tara Denise
- ZumMallen, Daniel LeRoy
|
대리인 / 주소 |
Knobbe, Martens, Olson & Bear, LLP
|
인용정보 |
피인용 횟수 :
7 인용 특허 :
12 |
초록
▼
A semi-rigid cover for insulating exposed plumbing structures, such as above ground backflow devices, against freezing when exposed to subfreezing temperatures. The device includes an insulative bag and a removable outer cover that is placed over the insulative bag. The insulative bag and outer cove
A semi-rigid cover for insulating exposed plumbing structures, such as above ground backflow devices, against freezing when exposed to subfreezing temperatures. The device includes an insulative bag and a removable outer cover that is placed over the insulative bag. The insulative bag and outer cover are closed on three sides and open on a fourth. The device also includes a plurality of securing structures, such as grommets, to facilitate securing the device to the plumbing structure with padlocks, combination locks, zip ties and the like. The device further includes a sealing structure, such as a strip of hook and loop fastener, placed along the open edge to facilitate sealing the device about the plumbing structure to minimize drafts into the interior of the device and to exclude pests. The outer cover is replaceable separately from the insulative bag to reduce replacement costs in case of damage or loss. The outer cover is highly resistant to tearing and exposure to environmental conditions such as water, sunlight, and temperature extremes. The materials of the device are all unattractive food and nesting materials to animals, birds, insects, plants, and fungi. The device is able to closely conform to the contour of the plumbing structure to improve its insulative properties. The insulative bag provides insulation against radiant, conductive, and convective heat transfer.
대표청구항
▼
A semi-rigid cover for insulating exposed plumbing structures, such as above ground backflow devices, against freezing when exposed to subfreezing temperatures. The device includes an insulative bag and a removable outer cover that is placed over the insulative bag. The insulative bag and outer cove
A semi-rigid cover for insulating exposed plumbing structures, such as above ground backflow devices, against freezing when exposed to subfreezing temperatures. The device includes an insulative bag and a removable outer cover that is placed over the insulative bag. The insulative bag and outer cover are closed on three sides and open on a fourth. The device also includes a plurality of securing structures, such as grommets, to facilitate securing the device to the plumbing structure with padlocks, combination locks, zip ties and the like. The device further includes a sealing structure, such as a strip of hook and loop fastener, placed along the open edge to facilitate sealing the device about the plumbing structure to minimize drafts into the interior of the device and to exclude pests. The outer cover is replaceable separately from the insulative bag to reduce replacement costs in case of damage or loss. The outer cover is highly resistant to tearing and exposure to environmental conditions such as water, sunlight, and temperature extremes. The materials of the device are all unattractive food and nesting materials to animals, birds, insects, plants, and fungi. The device is able to closely conform to the contour of the plumbing structure to improve its insulative properties. The insulative bag provides insulation against radiant, conductive, and convective heat transfer. ltilayer strip is used, which device is interposed between the station for putting the longitudinal ribbons or bands into place and/or the bonding station and the station for cutting out the individual drapes. 4. A method according to claim 1, wherein an X-ray detectable thread furnished by a thread of polyester impregnated with barium sulfate is put into place along at least one of longitudinal edges of the multilayer strip before or simultaneously with the hem-forming ribbons or bands being put into place, so as to integrate said X-ray detectable thread in the hem(s). 5. A method according to claim 1, wherein an X-ray detectable thread furnished as a polyester thread impregnated with barium sulfate is integrated in at least one of the hems around transverse edges of individualized drapes. 6. A method of continuously manufacturing compresses or drapes for single use, the method comprising the following steps: a single continuous multi-layer strip is made by simultaneously delivering sheets or strips of hydrophilic cotton gauze and of non-woven web including outer sheets from supply spools or reels, which are connected to a device for automatically adjusting the tension of the sheets or strips of hydrophilic cotton gauze and of non-woven web, said sheets or strips of hydrophilic cotton gauze and of non-woven web running together to form a multi-layer strip via a motorized drive device prior to reaching stations for making up individual drapes, wherein the outer sheets consist of hydrophilic cotton gauze; continuous non-woven ribbons or bands are put into place on longitudinal edges of the multi-layer strip by being delivered from spools, said continuous non-woven ribbons or bands being folded around the longitudinal edges of the multi-layer strip over the outer sheets to form hems; the continuous non-woven ribbons or bands folded around the longitudinal edges of the multi-layer strip are assembled in a stitching station by means of stitching passing through folded-over branches of the continuous non-woven ribbons or bands and through all of the layers of the multi-layer strip; individual drapes are cut transversely to length in a cutting station and dust is sucked up by means of a suction device; the cut of drapes is taken up perpendicularly by a drive device; and hem-forming ribbons or bands are placed around the transverse edges of individualized drapes and are secured by stitching. 7. A method according to claim 3, wherein a plurality of longitudinal lines of stitching are applied that are distributed at regular intervals over the entire width of the multilayer strip prior to the strip being cut up into individual drapes, and preferably prior to the bands being placed around the longitudinal edges. 8. A method according to claim 2 or 7, wherein the tension of the sheets or strips of hydrophilic cotton gauze and of non-woven web is obtained by traction exerted on said strips by the motorized drive device and by braking the supply spools or reels, and wherein the tension of the sheets or strips of hydrophilic cotton gauze and of non-woven web is obtained after motor-driven delivery from the spool or reel by means of the motorized drive device for automatically adjusting the tension of said sheets or strips of hydrophilic cotton gauze and of non-woven web, which motorized drive device is placed between the payout spool and the drive device, and because of the sheets or strips of hydrophilic cotton gauze and of non-woven web being driven by friction between the sheets or strips of hydrophilic cotton gauze and of non-woven web, themselves driven by the motorized drive device. 9. A method of continuously manufacturing compresses or drapes for single use comprising the following steps: connecting reels to a device for automatically adjusting the tension of strips of hydrophilic cotton gauze and of non-woven hydrophilic web; simultaneously delivering strips of hydrophilic cotton gauze and of non-woven hydrophilic web
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