Patent US3668355A successfully refreshed from Google Patents.
Patent US3112002A successfully refreshed from Google Patents.
Patent US4898760A successfully refreshed from Google Patents.
US4898760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for extruding a low density elastomeric thermoplastic foam
Assignee: Amesbury Group Inc
•
Filing: 1987-11-17
•
Granted: 1990-02-06
•
Expires: 2007-11-17
Abstract
Abstract A process and apparatus are described for extruding a soft, low density elastomeric thermoplastic foam. A single screw extruder having a very large screw length to diameter ratio is provided to thoroughly mix the thermoplastic elastomer with a blowing agent. A thin, substantially taperless die is also provided to form extruded profiles. By using such a process and apparatus, a variety of complex-shaped extruded profiles may be easily produced.
Inventors
- 👤 Louis Halberstadt
- 👤 Peter E. Mertinooke
- 👤 Joseph V. Perry
- 👤 Dan C. Muessel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:24
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/08; B29C65/083; B29C65/086; B29C44/00; B29C44/34; B29C44/36; B29C44/46; B29C44/50; B29C44/56; B29C48/00; B29C48/25; B29C48/36; B29C48/395; B29C48/78; B29C48/80; B29C48/82; B29C48/83; B29C48/832; B29C48/84; B29C48/85; B29C48/86; B29C48/872; B29C48/873; B29C48/875; B29C66/00; B29C66/70; B29C66/71; B29C66/72; B29C66/727; B29C66/73; B29C66/731; B29C66/7313; B29C66/7315; B29C66/73151; B29C66/735; B29C66/7352; B29C66/739; B29C66/7392; B29C66/73921; E; E06; E06B; E06B7/00; E06B7/16; E06B7/22; E06B7/23; E06B7/2314; B29C48/001; B29C48/0012; B29C48/03; B29C48/12; B29C48/15; B29K; B29K2105/00; B29K2105/04; B29K2995/00; B29K2995/0037; B29K2995/007; B29K2995/0072; B29L; B29L2024/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/2419; Y10T428/24198; Y10T428/29; Y10T428/2902
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
73 words
A weatherseal comprising: a soft, low density elastomeric thermoplastic foam profile having a density less than 20 lbs/ft 3 and foamed from a thermoplastic elastomer having a durometer reading of less than 65; a means for attaching said weatherseal to a structure, said means for attaching being bonded along the length of said foam profile; and a thin, low friction skin bonded to at least part of the surface of said foam profile.
Claim 2
Dependent Claim
73 words
A weatherseal comprising: a soft, low density elastomeric thermoplastic foam profile having a density less than 20 lbs/ft 3 and foamed from a thermoplastic elastomer having a durometer reading of less than 65; a means for attaching said weatherseal to a structure, said means for attaching being bonded along the length of said foam profile; and a thin, low friction skin bonded to at least part of the surface of said foam profile.
Claim 3
Dependent Claim
14 words
The weatherseal according to claim 1 wherein said thin, low friction skin comprises polyethylene.
Claim 4
Dependent Claim
26 words
The weatherseal according to claim 1 wherein said means for attaching said weatherseal comprises a stiffener having barbs, said barbs effecting secure attachment to said structure.
Claim 5
Dependent Claim
21 words
The weatherseal according to claim 1 wherein the density of said foam profile is between 2 and 19 lbs/ft 3 .
Claim 6
Dependent Claim
11 words
The weatherseal according to claim 3 wherein said stiffener comprises polypropylene.
Claim 7
Dependent Claim
21 words
The weatherseal according to claim 1 wherein said means for attaching is ultrasonically bonded along the length of said foam profile.
Claim 8
Dependent Claim
14 words
The weatherseal according to claim 1 wherein said thermoplastic elastomer is a thermoplastic rubber.
Claim 9
Dependent Claim
20 words
The weatherseal according to claim 1 wherein said thermoplastic elastomer is a thermoplastic rubber having a durometer reading of 64.
Claim 10
Dependent Claim
51 words
A weatherseal comprising: a soft, low density elastomeric thermoplastic foam profile having a density less than 20 lbs/ft 3 and foamed from a thermoplastic elastomer having a durometer reading of less than 65; and a thin, low friction skin bonded to at least part of the surface of said foam profile.
Claim 11
Dependent Claim
51 words
A weatherseal comprising: a soft, low density elastomeric thermoplastic foam profile having a density less than 20 lbs/ft 3 and foamed from a thermoplastic elastomer having a durometer reading of less than 65; and a thin, low friction skin bonded to at least part of the surface of said foam profile.
Claim 12
Dependent Claim
14 words
The weatherseal according to claim 9 wherein said thin, low friction skin comprises polyethylene.
Claim 13
Dependent Claim
21 words
The weatherseal according to claim 9 wherein the density of said foam profile is between 2 and 19 lbs/ft 3 .
Claim 14
Dependent Claim
12 words
The weatherseal according to claim 9 wherein said foam profile is channel-shaped.
Claim 15
Dependent Claim
14 words
The weatherseal according to claim 9 wherein said thermoplastic elastomer is a thermoplastic rubber.
Claim 16
Dependent Claim
20 words
The weatherseal according to claim 9 wherein said thermoplastic elastomer is a thermoplastic rubber having a durometer reading of 64.
References Cited (Backward Citations)
US3827841A
Cited
US3624964A
Cited
US3814779A
Cited
US4181647A
Cited
US4049760A
Cited
US4107260A
Cited
US4130535A
Cited
US4311628A
Cited
US4222729A
Cited
US4185416A
Cited
US4328273A
Cited
US4308352A
Cited
US4401612A
Cited
US4409165A
Cited
US4537825A
Cited
US4535564A
Cited
US4538380A
Cited
US4708351A
Cited
US4532260A
Cited
US4654262A
Cited
US4730416A
Cited
US4652475A
Cited
US4656785A
Cited
US4742646A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-02-05 | 1993-08-07 | 1994-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-05 | 1997-08-07 | 1998-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-05 | 2001-08-07 | 2002-02-06 | $7700.00 | Window Closed / Lapsed |