Patent US4022178A successfully refreshed from Google Patents.
US4022178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valves
Assignee: Individual
•
Filing: 1974-09-06
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Granted: 1977-05-10
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Expires: 1994-09-06
Abstract
Abstract A valve for controlling the flow of gases, or fluids, which comprises a stationary valve housing having an opening in its face and a movable valve member having a face rotatable, or slidable, over the face of the valve housing and having a port or ports in the face which comes into and out of communication with the opening, there being means to supply liquid lubricant between the valve and housing faces and means capable of reducing the lubricant film thickness between the valve and housing faces in the region of the valve port and its opening into the combustion chamber to from 40 to 50μ inches.
Inventors
- 👤 Michael Ellison Cross
- 👤 Albert Edward Coles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:34
CPC Classifications
F; F01; F01L; F01L7/00; F01L7/16; F01L7/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
149 words
A rotary valve for controlling the flow of gases, which valve comprises a stationary valve housing defining an opening in a face thereof, and a movable valve member mounted for rotation within a bore defined by said housing, said valve member having a face slidable over said face of the housing and defining a port in its said face which comes into and out of communication with the said opening, means to supply lubricant between the two said faces, sealing means disposed to reduce the oil film thickness between the two said faces in the region of the port and opening when in communication to be from 40 to 50 μ inches, said sealing means comprising at least one sealing element provided around the opening in said face of the valve housing for sealing against the valve member, said sealing element comprising a spiral groove formed in said face.
Claim 2
Dependent Claim
149 words
A rotary valve for controlling the flow of gases, which valve comprises a stationary valve housing defining an opening in a face thereof, and a movable valve member mounted for rotation within a bore defined by said housing, said valve member having a face slidable over said face of the housing and defining a port in its said face which comes into and out of communication with the said opening, means to supply lubricant between the two said faces, sealing means disposed to reduce the oil film thickness between the two said faces in the region of the port and opening when in communication to be from 40 to 50 μ inches, said sealing means comprising at least one sealing element provided around the opening in said face of the valve housing for sealing against the valve member, said sealing element comprising a spiral groove formed in said face.
Claim 3
Dependent Claim
152 words
A rotary valve for controlling the flow of gases, which valve comprises a stationary valve housing defining an opening in a face thereof, and a movable valve member mounted for rotation within a bore defined by said housing, said valve member having a face slidable over said face of the housing and defining a port in its said face which comes into and out of communication with the said opening, means to supply lubricant between the two said faces, sealing means disposed to reduce the oil film thickness between the two said faces in the region of the port and opening when in communication to be from 40 to 50μ inches, said sealing means comprising at least one sealing element provided around the opening in said face of the valve housing for sealing against the valve member, said sealing element comprising a spiral groove formed in an insert fitted into said face.
Claim 4
Dependent Claim
152 words
A rotary valve for controlling the flow of gases, which valve comprises a stationary valve housing defining an opening in a face thereof, and a movable valve member mounted for rotation within a bore defined by said housing, said valve member having a face slidable over said face of the housing and defining a port in its said face which comes into and out of communication with the said opening, means to supply lubricant between the two said faces, sealing means disposed to reduce the oil film thickness between the two said faces in the region of the port and opening when in communication to be from 40 to 50μ inches, said sealing means comprising at least one sealing element provided around the opening in said face of the valve housing for sealing against the valve member, said sealing element comprising a spiral groove formed in an insert fitted into said face.
Claim 5
Dependent Claim
24 words
A valve according to claim 2, in which one or more sealing strips are fitted into the or each groove to effect the seal.
Claim 6
Dependent Claim
170 words
A rotary valve for controlling the flow of gases, which valve comprises a stationary valve housing defining an opening in a face thereof, and a movable valve member mounted for rotation within a bore defined by said housing, said valve member having a face slidable over said face of the housing and defining a port in its said face which comes into and out of communication with the said opening, means to supply lubricant between the two said faces, sealing means disposed to reduce oil film thickness between the two said faces in the region of the port and opening when in communication to be from 40 to 50μ inches, said sealing means comprising at least one sealing element provided around the opening in said face of the valve housing for sealing against the valve member, said sealing element comprising at least one groove formed in an insert fitted into said face, the depth of the groove reducing along its length to provide a lubricant leakage path of reducing cross-section.
Claim 7
Dependent Claim
170 words
A rotary valve for controlling the flow of gases, which valve comprises a stationary valve housing defining an opening in a face thereof, and a movable valve member mounted for rotation within a bore defined by said housing, said valve member having a face slidable over said face of the housing and defining a port in its said face which comes into and out of communication with the said opening, means to supply lubricant between the two said faces, sealing means disposed to reduce oil film thickness between the two said faces in the region of the port and opening when in communication to be from 40 to 50μ inches, said sealing means comprising at least one sealing element provided around the opening in said face of the valve housing for sealing against the valve member, said sealing element comprising at least one groove formed in an insert fitted into said face, the depth of the groove reducing along its length to provide a lubricant leakage path of reducing cross-section.
Claim 8
Dependent Claim
24 words
A valve according to claim 4, in which one or more sealing strips are fitted into the or each groove to effect the seal.
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) | 1980-05-09 | 1980-11-08 | 1981-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-09 | 1984-11-08 | 1985-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-09 | 1988-11-08 | 1989-05-10 | $7700.00 | Window Closed / Lapsed |