Patent US4666056A successfully refreshed from Google Patents.
US4666056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cap with valve
Assignee: Toyota Motor Corp
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Filing: 1986-04-25
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Granted: 1987-05-19
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Expires: 2006-04-25
Abstract
Abstract A cap with valve of the invention is provided with a negative pressure valve at a fluid entering flow path in a closure installed to an aperture of a container, so that fluid flows into the container from outside when pressure in the container is decreased, thereby decrease of the pressure in the container is prevented. A filter cloth is arranged to the fluid entering flow path at the front side of the negative pressure valve and swells to the fluid entering side so as to cover the flow path.
Inventors
- 👤 Joji Kasugai
- 👤 Masami Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:33
CPC Classifications
B; B60; B60K; B60K15/00; B60K15/03; B60K15/04; B60K15/0406
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
91 words
A cap with valve comprising: (a) a closure installed to an aperture of a container; (b) a fluid entering flow path formed in the closure; (c) a negative pressure valve arranged in the fluid entering flow path for flowing the fluid into the container from outside when pressure in the container is decreased so as to prevent the decrease of the pressure in the container; and (d) a filter cloth arragned at the fluid entering flow path and swelling to the fluid entering side so as to cover the flow path.
Claim 2
Dependent Claim
91 words
A cap with valve comprising: (a) a closure installed to an aperture of a container; (b) a fluid entering flow path formed in the closure; (c) a negative pressure valve arranged in the fluid entering flow path for flowing the fluid into the container from outside when pressure in the container is decreased so as to prevent the decrease of the pressure in the container; and (d) a filter cloth arragned at the fluid entering flow path and swelling to the fluid entering side so as to cover the flow path.
Claim 3
Dependent Claim
22 words
A cap with valve as set forth in claim 1, wherein said filter cloth is made of metal wire rod being woven.
Claim 4
Dependent Claim
21 words
A cap with valve as set forth in claim 1, wherein said filter cloth is made of chemical fiber being woven.
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) | 1990-05-18 | 1990-11-17 | 1991-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-18 | 1994-11-17 | 1995-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-18 | 1998-11-17 | 1999-05-19 | $7700.00 | Window Closed / Lapsed |