Patent US4335167A successfully refreshed from Google Patents.
US4335167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake fluid reservoir comprising polymethylpentene and 10-20% glass fibers
Assignee: Wagner Electric Corp
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Filing: 1980-06-02
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Granted: 1982-06-15
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Expires: 2000-06-02
Abstract
Abstract An improved brake fluid reservoir is disclosed. The reservoir is made from polymethylpentene and includes 10-20% by weight glass fibers as an opacifying agent. A translucent reservoir is obtained which has the highly desirable feature of visibility of the fluid level in the reservoir without providing a clear view of the fluid.
Inventors
- 👤 John W. Kolditz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:10
CPC Classifications
B; B60; B60T; B60T11/00; B60T11/10; B60T11/26; C; C08; C08K; C08K7/00; C08K7/02; C08K7/04; C08K7/14; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1314
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
47 words
In a brake fluid reservoir for a hydraulic brake system, the improvement comprising at least a portion of said brake fluid reservoir being formed of a composition consisting essentially of polymethylpentene resin and from about 10% to about 20% of glass fibers by weight of the resin.
Claim 2
Dependent Claim
47 words
In a brake fluid reservoir for a hydraulic brake system, the improvement comprising at least a portion of said brake fluid reservoir being formed of a composition consisting essentially of polymethylpentene resin and from about 10% to about 20% of glass fibers by weight of the resin.
Claim 3
Dependent Claim
46 words
A brake fluid reservoir for a hydraulic brake system, said brake fluid reservoir having a main body portion, said main body portion being formed of a composition consisting essentially of polymethylpentene resin and from about 10% to about 20% glass fibers by weight of the resin.
Claim 4
Dependent Claim
46 words
A brake fluid reservoir for a hydraulic brake system, said brake fluid reservoir having a main body portion, said main body portion being formed of a composition consisting essentially of polymethylpentene resin and from about 10% to about 20% glass fibers by weight of the resin.
Claim 5
Dependent Claim
24 words
The brake fluid reservoir of claim 2 wherein the polymethylpentene resin includes up to about 10% by weight of a co-monomer compatible with polymethylpentene.
Claim 6
Dependent Claim
24 words
The brake fluid reservoir of claim 2 wherein the polymethylpentene resin includes up to about 10% by weight of a polymer blended with polymethylpentene.
Claim 7
Dependent Claim
20 words
The brake fluid reservoir of claim 1 wherein the glass fibers have an average length of less than about 1/8".
Claim 8
Dependent Claim
23 words
The brake fluid reservoir of claim 5 wherein the glass fibers have an average length of from about 0.05 to about 0.1 inch.
Claim 9
Dependent Claim
27 words
The brake fluid reservoir of claim 2 wherein the glass fibers are present in an amount from about 10% to about 15% by weight of the resin.
Claim 10
Dependent Claim
56 words
A brake fluid reservoir for a hydraulic brake system, said brake fluid reservoir having a main body portion, said main body portion being composed of polymethylpetene and from about 10% to about 15% glass fibers by weight of the polymethylpentene, said glass fibers having an average length of from about 0.05 inch to about 0.1 inch.
Claim 11
Dependent Claim
56 words
A brake fluid reservoir for a hydraulic brake system, said brake fluid reservoir having a main body portion, said main body portion being composed of polymethylpetene and from about 10% to about 15% glass fibers by weight of the polymethylpentene, said glass fibers having an average length of from about 0.05 inch to about 0.1 inch.
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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) | 1985-06-14 | 1985-12-14 | 1986-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-14 | 1989-12-14 | 1990-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-14 | 1993-12-14 | 1994-06-15 | $7700.00 | Window Closed / Lapsed |