Patent US4598831A successfully refreshed from Google Patents.
US4598831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-resistant synthetic resin bottle
Assignee: Nissei ASB Machine Co Ltd
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Filing: 1984-10-25
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Granted: 1986-07-08
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Expires: 2004-10-25
Abstract
Abstract Here is disclosed a heat-resistant synthetic resin bottle which is biaxially oriented by axially stretching and air blowing an injected or extruded closed-end parison in a blow mold to carry out molding, whereby a bottom wall of the bottle is recessed toward its interior in the form of a dome and an annular peripheral edge for supporting the bottle itself is formed around the bottom wall, characterized in that a top portion of the bottom wall which thickens gradually from the annular peripheral edge to a central portion thereof is recessed upwardly from the underside of the top portion itself in order to thin the top portion, and the bottom wall between the top portion and the peripheral edge is partially outwardly bulged in order to radially form a predetermined number of triangular pyramid-shaped recessed section and bottom lands between said recessed section.
Inventors
- 👤 Yoshinori Nakamura
- 👤 Yoshiki Miyazawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:01
CPC Classifications
B; B65; B65D; B65D1/00; B65D1/02; B65D1/0223; B65D1/0261; B65D1/0276
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
151 words
A heat-resistant synthetic resin bottle which is biaxially oriented by axially stretching and air blowing an injected or extruded closed-end parison in a blow mold to carry out molding, whereby a bottom wall of said bottle is recessed toward its interior in the form of a dome and an annular peripheral edge for supporting said bottle itself is formed around said bottom wall, characterized in that a top portion of said bottom wall which is formed gradually thickening from said annular peripheral edge to a central portion thereof and is recessed upwardly from the underside of said top portion itself in order to thin said top portion, and said bottom wall between said top portion and said peripheral edge is partially outwardly additionally curved in order to radially form a predetermined number of triangular pyramid-shaped recessed sections having a pair of connected bottom walls and bottom lands between said recessed sections.
Claim 2
Dependent Claim
151 words
A heat-resistant synthetic resin bottle which is biaxially oriented by axially stretching and air blowing an injected or extruded closed-end parison in a blow mold to carry out molding, whereby a bottom wall of said bottle is recessed toward its interior in the form of a dome and an annular peripheral edge for supporting said bottle itself is formed around said bottom wall, characterized in that a top portion of said bottom wall which is formed gradually thickening from said annular peripheral edge to a central portion thereof and is recessed upwardly from the underside of said top portion itself in order to thin said top portion, and said bottom wall between said top portion and said peripheral edge is partially outwardly additionally curved in order to radially form a predetermined number of triangular pyramid-shaped recessed sections having a pair of connected bottom walls and bottom lands between said recessed sections.
Claim 3
Dependent Claim
49 words
The heat-resistant synthetic resin bottle according to claim 1 wherein the bottoms of said triangular pyramid-shaped recessed sections are thin-wall, and the opposite sides of each recessed section is connected along a line forming a ridge between said opposite sides and the sides are gradually thickened toward said ridge.
Claim 4
Dependent Claim
35 words
The heat-resistant synthetic resin bottle of claim 2 wherein the said ridge is at an angle in the range of 30° to 90° with respect to a horizontal plane which includes said annular peripheral edge.
References Cited (Backward Citations)
US2481015A
Cited
US3403804A
Cited
US3598270A
Cited
US3727783A
Cited
US3973693A
Cited
US4134510A
Cited
US4108324A
Cited
US4254882A
Cited
US4355728A
Cited
FR2448481A1
Cited
US4247012A
Cited
GB2067160A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-07-07 | 1990-01-06 | 1990-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-07 | 1994-01-06 | 1994-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-07 | 1998-01-06 | 1998-07-08 | $7700.00 | Window Closed / Lapsed |