US3989429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced membrane
Assignee: UG Licensing Services Inc
•
Filing: 1976-04-02
•
Granted: 1976-11-02
•
Expires: 1996-04-02
Abstract
Abstract A generally annular tire curing membrane has a plurality of interconnected ribs integrally molded on its inside surface. The ribs collectively define a plurality of adjacent polygons. A portion of at least one of the ribs is disposed at an oblique angle to the circumferential centerline of the membrane. The polygons may have an infinite number of sides, thereby having a curved boundary.
Inventors
- 👤 William Frank Mattson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:45
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/0601; B29D30/0654; B29D2030/0655
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
76 words
A curing membrane of an elastomeric material having a generally annular configuration and a circumferential centerline, said membrane comprising: a. a wall having an inside surface; b. a plurality of interconnected ribs integrally molded to said inside surface; and c. a plurality of adjacent polygons defined by said interconnected ribs, the improvement wherein at least a portion of one of said interconnected ribs is disposed at an oblique angle to the plane of said circumferential centerline.
Claim 2
Dependent Claim
76 words
A curing membrane of an elastomeric material having a generally annular configuration and a circumferential centerline, said membrane comprising: a. a wall having an inside surface; b. a plurality of interconnected ribs integrally molded to said inside surface; and c. a plurality of adjacent polygons defined by said interconnected ribs, the improvement wherein at least a portion of one of said interconnected ribs is disposed at an oblique angle to the plane of said circumferential centerline.
Claim 3
Dependent Claim
19 words
A curing membrane as defined in claim 1 wherein the widths of each of said ribs are essentially equal.
Claim 4
Dependent Claim
56 words
A curing membrane as defined in claim 1 wherein at least one of the ribs is curved, said curved rib defining a smoothly curved boundary of at least one of said polygons, the angle of each portion of said curved rib being the same as the angle of the tangent to the curve at that portion.
Claim 5
Dependent Claim
20 words
A curing membrane as defined in claim 3 wherein said at least one of said adjacent polygons is a circle.
Claim 6
Dependent Claim
24 words
A curing membrane as defined in claim 1 comprising a plurality of adjacent polygons extending essentially over the entire inside surface of the wall.
Claim 7
Dependent Claim
26 words
A curing membrane as defined in claim 1 wherein the height of each rib is from about 35% to 50% of the thickness of the wall.
Claim 8
Dependent Claim
30 words
A curing membrane as defined in claim 1 wherein the nonribbed area of the inside surface is about 60% of the total area of the inside surface of the membrane.
Claim 9
Dependent Claim
49 words
A curing membrane of an elastomeric material having a generally annular configuration and a circumferential centerline, said membrane having a plurality of interconnected ribs integrally molded to its inner surface, said ribs providing a network of reinforcement with portions of said ribs extending obliquely relative to said circumferential centerline.
Claim 10
Dependent Claim
49 words
A curing membrane of an elastomeric material having a generally annular configuration and a circumferential centerline, said membrane having a plurality of interconnected ribs integrally molded to its inner surface, said ribs providing a network of reinforcement with portions of said ribs extending obliquely relative to said circumferential centerline.
Claim 11
Dependent Claim
33 words
A curing membrane as defined in claim 8 wherein each of said plurality of interconnected ribs forms a plurality of adjacent polygons, each of said ribs being smoothly curved through its entire length.
Claim 12
Dependent Claim
33 words
A curing membrane as defined in claim 8 further comprising axially spaced margins extending parallel to said centerline wherein said plurality of ribs extend continuously from one of said margins to the other.
References Cited (Backward Citations)
US1642541A
Cited
US2452821A
Cited
US2695424A
Cited
US2851729A
Cited
GB938797A
Cited
US3170195A
Cited
US3676028A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-11-02 | 1980-05-03 | 1980-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-02 | 1984-05-03 | 1984-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-02 | 1988-05-03 | 1988-11-02 | $7700.00 | Window Closed / Lapsed |