US4343845A
Expired / Lapsed
US
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Elastomeric strip and method of manufacturing same
Assignee: Schlegel Corp
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Filing: 1980-07-30
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Granted: 1982-08-10
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Expires: 2000-07-30
Abstract
Abstract An elastomeric strip has a support frame having selected regions of longitudinally displaceable frame portions such as wire loops reinforced by degraded and non-degraded materials that are non-degradable during the frame coating operation for inhibiting longitudinal displacement of the frame portions during the frame coating operation. The degraded material breaks down when the strip is flexed to allow increased flexibility of the strip, and the non-degraded material prevents undue elongation or stretching of the strip. A method of manufacturing the strip comprises reinforcing regions of the frame portions with degradable materials, arranging the reinforced support frame in position to be coated, coating the reinforced support frame with an elastomeric material, and then degrading selective regions of the degradable reinforcing materials.
Inventors
- 👤 Martin J. Burden
- 👤 Richard C. Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:51
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/88; B29C70/887; B29C53/00; B29C53/02; B29C53/08; B29C53/083; B29C70/04; B29C70/06; B29C70/10; B29C70/16; B29C70/20; B29C70/205; B29C70/207; B60; B60J; B60J10/00; B60J10/15; B60J10/18; B60J10/20; B60J10/21; B60J10/24; B60J10/80; B29C48/00; B29C48/001; B29C48/0018; B29C48/03; B29C48/12; B29C48/15; B29C48/154; B29C48/16; B29C48/18; B29C48/21; B29L; B29L2023/00; B29L2023/22; B29L2031/00; B29L2031/001; B29L2031/003; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/2419; Y10T428/24198; Y10T428/24744
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
119 words
A method of manufacturing an elastomeric strip of improved flexibility comprising the steps of: reinforcing regions of longitudinally displaceable frame portions of a support frame with a degradable material to inhibit longitudinal displacement of the frame portions during the coating operation; arranging the reinforced support frame in a position to be coated with elastomeric material; coating the reinforced support frame with an elastomeric material to form an elastomeric strip without degrading the degradable material; and then degrading selective regions of the degradable reinforcing material after the support frame is coated so that longitudinal displacement of the selected regions of the frame portions is no longer inhibited resulting in an elastomeric strip of improved flexibility and limited elongation or stretching.
Claim 2
Independent Claim
119 words
A method of manufacturing an elastomeric strip of improved flexibility comprising the steps of: reinforcing regions of longitudinally displaceable frame portions of a support frame with a degradable material to inhibit longitudinal displacement of the frame portions during the coating operation; arranging the reinforced support frame in a position to be coated with elastomeric material; coating the reinforced support frame with an elastomeric material to form an elastomeric strip without degrading the degradable material; and then degrading selective regions of the degradable reinforcing material after the support frame is coated so that longitudinal displacement of the selected regions of the frame portions is no longer inhibited resulting in an elastomeric strip of improved flexibility and limited elongation or stretching.
Claim 3
Dependent Claim
36 words
A method of manufacturing an elastomeric strip according to claim 1 wherein the elastomeric material is subjected during the degradation step to a temperature equal to or above the temperature at which the degradable material degrades.
Claim 4
Dependent Claim
19 words
A method of manufacturing an elastomeric strip according to claim 1 wherein the support frame comprises a wire frame.
Claim 5
Dependent Claim
21 words
A method of manufacturing an elastomeric strip according to claim 3 wherein the wire frame is arranged in a serpentine manner.
Claim 6
Dependent Claim
23 words
A method of manufacturing an elastomeric strip according to claim 4 wherein the selected region is the central region of the serpentine wire.
Claim 7
Dependent Claim
27 words
A method of manufacturing an elastomeric strip according to claim 4 wherein the selected region is at least one of the outer regions of the serpentine wire.
Claim 8
Dependent Claim
25 words
A method of manufacturing an elastomeric strip according to claim 4 wherein the selected regions are both of the outer regions of the serpentine wire.
Claim 9
Dependent Claim
28 words
A method of manufacturing an elastomeric strip according to claim 4 wherein the coating step comprises extruding an elastomeric material through an extruding die onto the support frame.
Claim 10
Dependent Claim
35 words
A method of manufacturing an elastomeric strip according to claim 8 wherein during the degradation step the elastomeric material is subjected to a temperature equal to or above the degradation temperature of the degradable material.
Claim 11
Dependent Claim
57 words
A method of manufacturing an elastomeric strip according to claim 1 wherein the reinforcing degradable material is a heat degradable polyethylene, and the temperature of the elastomeric material during the coating step is less than the temperature at which the polyethylene degrades during the degrading step whereby no degradation of the polyethylene occurs during the coating step.
Claim 12
Dependent Claim
73 words
An elastomeric strip having a support frame comprising longitudinally displaceable frame portions, a coating of elastomeric material secured to the support frame in a coating operation, and selected regions of weaker degraded and non-degraded stronger material reinforcing the longitudinally displaceable frame portions wherein only the degraded material breaks when the elastomeric strip is flexed to allow increased flexibility of the strip, and the non-degraded material prevents undue elongation or stretching of the strip.
Claim 13
Dependent Claim
73 words
An elastomeric strip having a support frame comprising longitudinally displaceable frame portions, a coating of elastomeric material secured to the support frame in a coating operation, and selected regions of weaker degraded and non-degraded stronger material reinforcing the longitudinally displaceable frame portions wherein only the degraded material breaks when the elastomeric strip is flexed to allow increased flexibility of the strip, and the non-degraded material prevents undue elongation or stretching of the strip.
Claim 14
Dependent Claim
15 words
An elastomeric strip according to claim 11 wherein the support frame comprises a wire frame.
Claim 15
Dependent Claim
16 words
An elastomeric strip according to claim 12 wherein the wire frame comprises a serpentinely arranged wire.
Claim 16
Dependent Claim
19 words
An elastomeric strip according to claim 13 wherein the selected region is the central region of the serpentine wire.
Claim 17
Dependent Claim
23 words
An elastomeric strip according to claim 13 wherein the selected region is at least one of the outer regions of the serpentine wire.
Claim 18
Dependent Claim
21 words
An elastomeric strip according to claim 13 wherein the selected regions are both of the outer regions of the serpentine wire.
Claim 19
Dependent Claim
33 words
An elastomeric strip as in claims 14, 15 or 16 wherein the degradable material comprises strands of degradable polyethylene material interwoven with the selected region or regions of the longitudinally displaceable frame portions.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-08-09 | 1986-02-08 | 1986-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-09 | 1990-02-08 | 1990-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-09 | 1994-02-08 | 1994-08-10 | $7700.00 | Window Closed / Lapsed |