Patent US4133923A successfully refreshed from Google Patents.
US4133923A
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Coated bottles
Assignee: Hercules LLC
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Filing: 1977-10-26
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Granted: 1979-01-09
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Expires: 1997-10-26
Abstract
Abstract Coated bottles are disclosed having a coating comprised of an elastomeric blend of polypropylene with a hydrocarbon elastomer. The coating is adhered loosely to the bottle so that, upon rupture of the glass, it forms an envelope to contain glass fragments.
Inventors
- 👤 Harry W. Blunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:29
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/28; C03C17/32; C03C17/328; B; B65; B65D; B65D23/00; B65D23/08; B65D23/0807; B65D23/0814; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1317; Y10T428/1321; Y10T428/31504; Y10T428/31551; Y10T428/31645
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
75 words
A glass container having as a surface coating an alloy consisting essentially of an elastomeric blend of propylene polymer having an intrinsic viscosity of about 2.2 to 3.0 and 15 to 40% by weight based on the weight of the total blend of a hydrocarbon elastomer selected from the class consisting of (a) polyisobutylene rubber; and (b) ethylene-propylene copolymer rubbers; said blend having a good high rate elongation and energy absorption characteristics at room temperature.
Claim 2
Dependent Claim
75 words
A glass container having as a surface coating an alloy consisting essentially of an elastomeric blend of propylene polymer having an intrinsic viscosity of about 2.2 to 3.0 and 15 to 40% by weight based on the weight of the total blend of a hydrocarbon elastomer selected from the class consisting of (a) polyisobutylene rubber; and (b) ethylene-propylene copolymer rubbers; said blend having a good high rate elongation and energy absorption characteristics at room temperature.
Claim 3
Dependent Claim
13 words
A glass container of claim 1 wherein the hydrocarbon elastomer is polyisobutylene rubber.
Claim 4
Dependent Claim
23 words
A glass container according to claim 1 which is a soft drink bottle capable of being pressurized to at least about 60 psi.
Claim 5
Dependent Claim
22 words
The container as in claim 1 in which the propylene polymer is a copolymer containing about 5 to 10% ethylene by weight.
Claim 6
Dependent Claim
44 words
The container of claim 2 wherein the propylene polymer is an ethylene-propylene copolymer having an intrinsic viscosity of about 2.2 to 3.0 and an ethylene content of about 5 to 10% by weight and the coating is about 3 to 10 mils in thickness.
References Cited (Backward Citations)
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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) | 1982-01-08 | 1982-07-10 | 1983-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-08 | 1986-07-10 | 1987-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-08 | 1990-07-10 | 1991-01-09 | $7700.00 | Window Closed / Lapsed |