Patent US3832825A successfully refreshed from Google Patents.
US3832825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wax and asphalt (bitumen) packs
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1972-07-14
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Granted: 1974-09-03
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Expires: 1992-07-14
Abstract
Abstract Asphalt or wax is packed in fabric bags which may be lined with paper which in turn is coated to prevent sticking to the wax or asphalt. The filling of the bags can be carried out while the bag is supported in a container floating atop a water bath, following which the container and filled bag sink into the water to float the bag from the container. The water bath also hastens cooling of the hot asphalt or wax.
Inventors
- 👤 A Dunbar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:12
CPC Classifications
B; B65; B65B; B65B63/00; B65B63/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
123 words
A process for packaging asphalt or wax which comprises the following steps: a. inserting a bag, having an opening at the top thereof, into a supporting container open at its upper end and freely receiving said bag, said container being of sufficient size that a free space about said bag will remain when said bag has been filled; b. filling said bag with hot asphalt or wax through said opening; c. thereafter closing and sealing said opening; d. immersing said container with said bag therein into a body of water of sufficient depth to permit said bag to float out of said container; e. then removing said bag from the container by the buoyant force of water entering said container around said bag.
Claim 2
Dependent Claim
123 words
A process for packaging asphalt or wax which comprises the following steps: a. inserting a bag, having an opening at the top thereof, into a supporting container open at its upper end and freely receiving said bag, said container being of sufficient size that a free space about said bag will remain when said bag has been filled; b. filling said bag with hot asphalt or wax through said opening; c. thereafter closing and sealing said opening; d. immersing said container with said bag therein into a body of water of sufficient depth to permit said bag to float out of said container; e. then removing said bag from the container by the buoyant force of water entering said container around said bag.
Claim 3
Dependent Claim
97 words
A process according to claim 1, which includes manufacturing a sheet material from a fabric woven from fibers like jute (hessain), sisal or coir, one side of the fabric being coated with a thin layer of asphalt, wax or polyethylene, and then lined with a sheet of paper which, on its exposed surface, is either coated with silicone or lined/coated with a film of a plastic material capable of withstanding the temperature of the wax or asphalt to be filled, and manufacturing from said sheet material said bag of predetermined dimensions leaving an opening at the top.
Claim 4
Dependent Claim
47 words
A process according to claim 1, wherein said bag comprises an outer woven fibrous fabric layer internally coated with asphalt, polyethylene, or wax; a paper layer adjacent said asphalt or wax; and a layer of either silicone or plastic film on the internal surface of said paper.
Claim 5
Dependent Claim
75 words
A process for packaging hot wax or asphalt as claimed in claim 3, wherein said bag coated with asphalt internally and lined with paper serves as an outer bag and covers: an inner bag which is a bag of paper coated inside with silicone, or a bag of a laminate of paper and plastic film capable of withstanding the temperature of the asphalt to be filled, or a bag of a plurality of such laminates.
Claim 6
Dependent Claim
49 words
A process for packaging hot wax or asphalt as claimed in claim 4, wherein there is interposed between said outer and the inner bag, an additional bag of a metal foil or a tough material, either loose or laminated with either the outer or the inner bag or both.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |