Patent US4192027A successfully refreshed from Google Patents.
US4192027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toilet
Assignee: Thetford LLC
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Filing: 1978-07-21
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Granted: 1980-03-11
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Expires: 1998-07-21
Abstract
Abstract A portable toilet is provided with a bowl having an outlet port in its bottom, this being closed by a yoke shaped, pivotal valve member movable between a first position in which it closes the outlet port and a second position in which it uncovers the port. An actuation member moves relative to the valve member and cooperating cam surfaces on the valve member and actuation member urge the valve member upwardly to seal the outlet port upon such relative movement.
Inventors
- 👤 Frank T. Sargent
- 👤 Frederick A. Butler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:51
CPC Classifications
E; E03; E03D; E03D5/00; E03D5/012
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
106 words
A toilet comprising, in combination: (a) a bowl having an outlet port; (b) a valve member movable between a first position under said outlet port, in which it closes said outlet port, and a second position in which it uncovers the outlet port; (c) an actuation member carrying said valve member and movable relative to said valve member and (d) cooperating cam surfaces on said actuation member and valve member whereby relative movement between the actuation member and the valve member, when the latter is moved into its first position by the former, urges the valve member in an upward direction to seal the outlet port.
Claim 2
Dependent Claim
106 words
A toilet comprising, in combination: (a) a bowl having an outlet port; (b) a valve member movable between a first position under said outlet port, in which it closes said outlet port, and a second position in which it uncovers the outlet port; (c) an actuation member carrying said valve member and movable relative to said valve member and (d) cooperating cam surfaces on said actuation member and valve member whereby relative movement between the actuation member and the valve member, when the latter is moved into its first position by the former, urges the valve member in an upward direction to seal the outlet port.
Claim 3
Dependent Claim
25 words
A toilet as claimed in claim 1, wherein at least one of said cam surfaces is provided on the lower face of the valve member.
Claim 4
Dependent Claim
20 words
A toilet as claimed in claim 1, and further comprising a downwardly extending annular curtain seal on said outlet port.
Claim 5
Dependent Claim
27 words
A toilet as claimed in claim 1, wherein operation of the actuation member firstly moves the cam surfaces to release the valve member towards its open position.
Claim 6
Dependent Claim
22 words
A toilet as claimed in claim 1, and further comprising spring means effective to urge the valve member towards its first position.
Claim 7
Dependent Claim
51 words
A toilet as claimed in claim 1, and further comprising two parallel guide webs extending downwardly from the bowl, one on each side of the outlet port, and upwardly extending guide portions on said valve member engage the guide web to guide the valve member between its first and second positions.
Claim 8
Dependent Claim
20 words
A toilet as claimed in claim 6, wherein the valve member slides over the lower edges of the guide webs.
Claim 9
Dependent Claim
45 words
A toilet as claimed in claim 7, wherein the lower edges are so shaped that the initial movement of the valve member from its second position to its first position lowers the leading edge of the valve member to facilitate movement over the outlet port.
Claim 10
Dependent Claim
26 words
A toilet as claimed in claim 7, and further comprising abutments on said guide webs to stop the valve member in the first and second positions.
Claim 11
Dependent Claim
54 words
A toilet as claimed in claim 1, wherein said actuation member comprises a yoke pivoted at its end to the bowl and having the upper surface of its central portion extending below the valve member, and an upwardly projecting element sliding along at least one cam on the lower surface of the valve member.
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) | 1983-03-11 | 1983-09-10 | 1984-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-11 | 1987-09-10 | 1988-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-11 | 1991-09-10 | 1992-03-11 | $7700.00 | Window Closed / Lapsed |