Patent US4964509A successfully refreshed from Google Patents.
US4964509A
Expired / Lapsed
US
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Universal shipping container for hazardous liquids
Assignee: 3M Co
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Filing: 1990-02-09
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Granted: 1990-10-23
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Expires: 2010-02-09
Abstract
Abstract A shipping or secondary container, which can safely transport a plurality of breakable primary containers of a variety of sizes and shapes, has a pair of rigid shells that mate. A batt of sorptive material fills each shell, and a normally tacky, discontinuous adhesive layer covers the exposed face of at least one batt. The shells can be vacuum formed from a sheet of thermoplastic resin that is 0.25 to 0.5 mm in thickness. The two shells preferably are identical to each other. To permit them to interlock, each shell has an upstanding wall that is formed with both tongues and grooves which telescopically mate with the tongues and grooves of the other shell.
Inventors
- 👤 Thomas I. Insley
- 👤 James F. Dyrud
- 👤 Donald E. Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:55
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/02; B65D81/05; B65D81/051; A; A45; A45C; A45C13/00; A45C13/02; A61; A61B; A61B10/00; A61B10/0096; B65D77/00; B65D77/04; B65D81/24; B65D81/26; B65D81/264; A45C3/00
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
107 words
Universal shipping or secondary container suitable for transporting a plurality of breakable, liquid filled primary containers of various sizes and shapes, which shipping container comprises a pair of rigid shells that mate to enclose a space, a batt of sorbent material filling each shell, which batt has a normally substantially flat exposed surface, is sufficiently conformable to envelop a primary container when the shells are closed, and has sufficient body to keep the primary container at the interface between the batts when the shells are closed, and a normally tacky, discontinuous adhesive layer on the exposed surface of the batt of at least one of the shells.
Claim 2
Dependent Claim
107 words
Universal shipping or secondary container suitable for transporting a plurality of breakable, liquid filled primary containers of various sizes and shapes, which shipping container comprises a pair of rigid shells that mate to enclose a space, a batt of sorbent material filling each shell, which batt has a normally substantially flat exposed surface, is sufficiently conformable to envelop a primary container when the shells are closed, and has sufficient body to keep the primary container at the interface between the batts when the shells are closed, and a normally tacky, discontinuous adhesive layer on the exposed surface of the batt of at least one of the shells.
Claim 3
Dependent Claim
27 words
Shipping container as defined in claim 1 wherein each of said shells comprises a thermoplastic resin that retains good toughness at temperatures as low as -30° C.
Claim 4
Dependent Claim
23 words
Shipping container as defined in claim 2 wherein said shells have been vacuum formed and the thermoplastic resin comprises a plasticized vinyl resin.
Claim 5
Dependent Claim
15 words
Shipping container as defined in claim 3 wherein the plasticized vinyl resin comprises poly(vinyl chloride).
Claim 6
Dependent Claim
24 words
Shipping container as defined in claim 1 each batt comprises blown microfibers that have an average fiber diameter of less than about 10 μm.
Claim 7
Dependent Claim
17 words
Shipping container as defined in claim 5 wherein the blown microfiber batt is sandwiched between two scrims.
Claim 8
Dependent Claim
13 words
Shipping container as defined in claim 6 wherein said scrims comprise spun-bonded polypropylene.
Claim 9
Dependent Claim
33 words
Shipping container as defined in claim 5 wherein the batts are sufficiently conformable to surround and isolate two adjacent cylindrical primary containers that are spaced by at least the sum of their radii.
Claim 10
Dependent Claim
28 words
Shipping container as defined in claim 1 wherein each of said shells has a broad, substantially flat face which is parallel to the exposed face of its batt.
Claim 11
Dependent Claim
16 words
Shipping container as defined in claim 9 wherein the broad face of each shell is ribbed.
Claim 12
Dependent Claim
16 words
Shipping container as defined in claim 1 wherein the two shells are identical to each other.
Claim 13
Dependent Claim
34 words
Shipping container as defined in claim 10 wherein each shell has an upstanding wall that is formed with both tongues and grooves which telescopically mate with the tongues and grooves of the other shell.
Claim 14
Dependent Claim
21 words
Shipping container as defined in claim 1 wherein the juncture between the mating shells is completely sealed with an adhesive tape.
Claim 15
Dependent Claim
15 words
Shipping container as defined in claim 1 wherein said adhesive tape has a nonporous backing.
Claim 16
Dependent Claim
18 words
Shipping container as defined in claim 14 wherein said adhesive of said adhesive tape is a pressure-sensitive adhesive.
Claim 17
Dependent Claim
14 words
Shipping container as defined in claim 1 wherein said discontinuous adhesive layer is stringy.
Claim 18
Dependent Claim
15 words
Shipping container as defined in claim 1 wherein said discontinuous adhesive is a rubber-resin composition.
Claim 19
Dependent Claim
53 words
Shipping container as defined in claim 17 wherein said discontinuous adhesive has sufficient adhesion to hold a liquid-filled glass primary container in position on the exposed face of a batt after the shipping container has been opened and the shell has been tipped until the exposed face of the batt is almost vertical.
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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) | 1993-10-22 | 1994-04-23 | 1994-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-22 | 1998-04-23 | 1998-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-22 | 2002-04-23 | 2002-10-23 | $7700.00 | Window Closed / Lapsed |