US3672393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrant valve assembly
Assignee: Individual
•
Filing: 1970-01-23
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Granted: 1972-06-27
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Expires: 1990-01-23
Abstract
Abstract A gate valve, particularly the gate valve of a hydrant including a shut-off valve cooperating with the gate valve, is provided with a bleed passageway so that with the gate valve in the closed position, a small stream will flow from the upstream side of the valve into the valve housing, indicating, when the housing is open, that the gate valve is closed.
Inventors
- 👤 Hans Klassen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:03
CPC Classifications
E; E03; E03B; E03B9/00; E03B9/02; E03B9/08; Y; Y10; Y10T; Y10T137/00; Y10T137/5327; Y10T137/5497; Y10T137/5503; Y10T137/5532; Y10T137/8158; Y10T137/8593; Y10T137/86928; Y10T137/877; Y10T137/87708; Y10T137/8774
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
253 words
A gate valve comprising: a. a valve body for installation of the valve in a main line, having a valve seat, b. a gate for opening and closing the main line by respectively engaging and disengaging the gate with the valve seat, c. gate valve spindle means for selectively lowering and raising the gate to respectively close and open the main line, d. a gate housing disposed above the valve body for receiving the gate when the gate is in the raised position, e. a hydrant housing releasably mounted on the gate housing and in fluid communication therewith. f. a hydrant shut-off valve disposed in the hydrant housing to control flow through said hydrant housing. g. shut-off valve spindle means for opening and closing the shut-off valve, h. the shut-off valve spindle means and gate valve spindle means being operatively connected to form a single hydrant spindle means. i. the hydrant spindle means operating to simultaneously close the gate valve and open the shut-off valve, and simultaneously open the gate valve and close the shut-off valve, and j. a bleed passageway in the gate for communicating one side of the gate with the gate housing with the gate in the closed position, whereby with the gate valve installed in a main line with the bleed passageway communicating with the upstream side of the gate valve, when the gate valve is in the closed position, a small stream will continuously flow into the gate housing indicating that the gate is in the closed position.
Claim 2
Dependent Claim
253 words
A gate valve comprising: a. a valve body for installation of the valve in a main line, having a valve seat, b. a gate for opening and closing the main line by respectively engaging and disengaging the gate with the valve seat, c. gate valve spindle means for selectively lowering and raising the gate to respectively close and open the main line, d. a gate housing disposed above the valve body for receiving the gate when the gate is in the raised position, e. a hydrant housing releasably mounted on the gate housing and in fluid communication therewith. f. a hydrant shut-off valve disposed in the hydrant housing to control flow through said hydrant housing. g. shut-off valve spindle means for opening and closing the shut-off valve, h. the shut-off valve spindle means and gate valve spindle means being operatively connected to form a single hydrant spindle means. i. the hydrant spindle means operating to simultaneously close the gate valve and open the shut-off valve, and simultaneously open the gate valve and close the shut-off valve, and j. a bleed passageway in the gate for communicating one side of the gate with the gate housing with the gate in the closed position, whereby with the gate valve installed in a main line with the bleed passageway communicating with the upstream side of the gate valve, when the gate valve is in the closed position, a small stream will continuously flow into the gate housing indicating that the gate is in the closed position.
Claim 3
Dependent Claim
42 words
Hydrant according to claim 1, the connection between the gate valve spindle means and the shut-off valve spindle means being a releasable connection permitting disassembly of the shut-off valve and the gate valve with the gate valve installed in the main line.
Claim 4
Dependent Claim
194 words
Hydrant according to claim 2, the hydrant housing comprising: a. a lower member mounted on the gate valve housing, b. an intermediate member mounted on said lower member, c. and an upper member releasably mounted on the intermediate member, d. the shut-off valve comprising a shut-off valve seat and a shut-off valve plug, e. the shut-off valve plug being disposed in the hydrant housing upper member, f. the gate valve spindle means having a collar intermediate the gate and said releasable connection joining the spindle means, g. retaining means for the collar for securing the collar and the gate valve spindle means at a fixed elevation, h. the retaining means including a lower member secured to the hydrant housing lower member and an upper member secured to the hydrant housing intermediate member, said lower and upper retaining means members cooperating together to effect said securing of the gate valve spindle means at a fixed elevation whereby with the gate valve in the closed position and the upper member of the hydrant housing removed and the gate valve spindle means and shut-off valve spindle means disconnected, the gate valve is secured in the closed position.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |