Patent US4655078A successfully refreshed from Google Patents.
US4655078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sprinkler drain and test valve
Assignee: Wachovia Bank NA
•
Filing: 1985-01-30
•
Granted: 1987-04-07
•
Expires: 2005-01-30
Abstract
Abstract A sprinker drain and test valve for testing a sprinkler system includes a housing, an inlet and an outlet disposed on either end of the housing, a ball valve disposed within the housing between the inlet and the outlet, the ball valve defining two channels that provide communication between the inlet and the outlet, the first of the channels allowing a flow substantially equivalent to that of one single sprinkler head in the system and the second of the channels allowing a relatively unrestricted flow, a handle for alternatively rotating the ball valve between a first position in which the first channel provides communication between the inlet and outlet and a second position in which the second channel provides communication between the inlet ad outlet, a portion of the ball valve for preventing communication between the inlet and the outlet, and a sight glass disposed downstream of the ball valve.
Inventors
- 👤 Augustus W. Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:30
CPC Classifications
A; A62; A62C; A62C37/00; A62C37/50; F; F16; F16K; F16K37/00; F16K37/0058; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8359
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
194 words
A sprinkler drain and test valve unit for testing a sprinkler system, said drain and test valve unit comprising: a housing disposed in a conduit; an inlet and an outlet disposed on either end of said housing and serving to connect said housing to said conduit; a single ball valve disposed within said housing between said inlet and said outlet, said ball valve defining two channels providing communication between said inlet and said outlet, the first of said channels allowing a flow substantially equivalent to that of one sprinkler head in said system and the second of said channels allowing a flow substantially equivalent to that of said conduit to thus allow an unrestricted flow through said ball valve; a means for alternatively rotating said ball valve between a first position whereby said first channel provides communication between said inlet and said outlet, a second position whereby said second channel provides communication between said inlet and said outlet, a means for preventing communication between said inlet and said outlet; and a sight glass disposed within said housing downstream of said ball valve so as to permit observation of the flow through said ball valve.
Claim 2
Dependent Claim
194 words
A sprinkler drain and test valve unit for testing a sprinkler system, said drain and test valve unit comprising: a housing disposed in a conduit; an inlet and an outlet disposed on either end of said housing and serving to connect said housing to said conduit; a single ball valve disposed within said housing between said inlet and said outlet, said ball valve defining two channels providing communication between said inlet and said outlet, the first of said channels allowing a flow substantially equivalent to that of one sprinkler head in said system and the second of said channels allowing a flow substantially equivalent to that of said conduit to thus allow an unrestricted flow through said ball valve; a means for alternatively rotating said ball valve between a first position whereby said first channel provides communication between said inlet and said outlet, a second position whereby said second channel provides communication between said inlet and said outlet, a means for preventing communication between said inlet and said outlet; and a sight glass disposed within said housing downstream of said ball valve so as to permit observation of the flow through said ball valve.
Claim 3
Dependent Claim
49 words
The sprinkler drain and test valve unit of claim 1, wherein said means for preventing communication comprises a portion of said ball valve, whereby said means for rotating further alternatively rotates said ball valve to a third position, whereby said portion prevents communication between said inlet and said outlet.
Claim 4
Dependent Claim
60 words
The sprinkler drain and test valve unit of claim 1, wherein said two channels are disposed in the same equatorial plane of said ball valve and said means for rotating comprises a handle affixed to a shaft sharing a common axis with said ball valve and being attached to said ball valve, said axis being disposed perpendicularly to said plane.
Claim 5
Dependent Claim
28 words
The sprinkler drain and test valve unit of claim 3, wherein said means for rotating comprises a means for releasably holding said ball valve in a desired position.
Claim 6
Dependent Claim
63 words
The sprinkler drain and test valve unit of claim 4, wherein said means for releasably holding comprises a spring-loaded ball and a recess, one of said ball and recess being disposed on said handle and one being disposed on said housing adjacent to said handle, whereby said ball is releasably received within said recess when said ball valve is in said desired position.
Claim 7
Dependent Claim
63 words
The sprinkler drain and test valve unit of claim 2, wherein said two channels and said portion are disposed in the same equatorial plane of said ball valve and said means for rotating comprises a handle affixed to a shaft sharing a common axis with said ball valve and being attached to said ball valve, said axis being disposed perpendicularly to said plane.
Claim 8
Dependent Claim
28 words
The sprinkler drain and test valve unit of claim 6, wherein said means for rotating comprises a means for releasably holding said ball valve in a desired position.
Claim 9
Dependent Claim
63 words
The sprinkler drain and test valve unit of claim 7, wherein said means for releasably holding comprises a spring-loaded ball and a recess, one of said ball and recess being disposed on said handle and one being disposed on said housing adjacent to said handle, whereby said ball is releasably received within said recess when said ball valve is in said desired position.
Claim 10
Dependent Claim
24 words
The sprinkler drain and test valve unit of claim 1, wherein said sight glass comprises two windows disposed on either side of said housing.
Claim 11
Dependent Claim
30 words
The sprinkler drain and test valve unit of claim 9, wherein said windows are at least as wide as the interior diameter of said housing adjacent to said sight glass.
Claim 12
Independent Claim
295 words
A method for testing and draining a sprinkler system comprising: a first step of providing a sprinkler drain and test valve unit for testing a sprinkler system, said drain and test valve unit comprising a housing disposed in a conduit, an inlet and an outlet disposed on either end of said housing and serving to connect said housing to said conduit, a single ball valve disposed within said housing between said inlet and said outlet, said ball valve defining two channels providing communication between said inlet and said outlet, the first of said channels allowing a flow substantially equivalent to that of one sprinkler head in said system and the second of said channels allowing a flow substantially equivalent to that of said conduit to thus allow an unrestricted flow through said ball valve, a means for alternatively rotating said ball valve between a first position whereby said first channel provides communication between said inlet and said outlet and a second position whereby said second channel provides communication between said inlet and said outlet, a means for preventing communication between said inlet and said outlet, and a sight glass disposed within said housing downstream of said ball valve so as to permit observation of the flow through said ball valve; a second step of rotating the ball valve of the sprinkler drain and test valve so that said first channel communicates between said inlet and said outlet in order to test said sprinkler system; a third step of rotating said ball valve so that said second channel communicates between said inlet and said outlet in order to drain said sprinkler system; and a fourth step of observing a flow or lack of flow through said housing downstream of said ball valve through said sight glass.
Claim 13
Independent Claim
295 words
A method for testing and draining a sprinkler system comprising: a first step of providing a sprinkler drain and test valve unit for testing a sprinkler system, said drain and test valve unit comprising a housing disposed in a conduit, an inlet and an outlet disposed on either end of said housing and serving to connect said housing to said conduit, a single ball valve disposed within said housing between said inlet and said outlet, said ball valve defining two channels providing communication between said inlet and said outlet, the first of said channels allowing a flow substantially equivalent to that of one sprinkler head in said system and the second of said channels allowing a flow substantially equivalent to that of said conduit to thus allow an unrestricted flow through said ball valve, a means for alternatively rotating said ball valve between a first position whereby said first channel provides communication between said inlet and said outlet and a second position whereby said second channel provides communication between said inlet and said outlet, a means for preventing communication between said inlet and said outlet, and a sight glass disposed within said housing downstream of said ball valve so as to permit observation of the flow through said ball valve; a second step of rotating the ball valve of the sprinkler drain and test valve so that said first channel communicates between said inlet and said outlet in order to test said sprinkler system; a third step of rotating said ball valve so that said second channel communicates between said inlet and said outlet in order to drain said sprinkler system; and a fourth step of observing a flow or lack of flow through said housing downstream of said ball valve through said sight glass.
Claim 14
Dependent Claim
69 words
The method of claim 11 wherein said means for preventing communication comprises a portion of said ball valve, whereby said means for rotating further alternatively rotates said ball valve to a third position, whereby said portion prevents communication between said inlet and said outlet, and wherein said method comprises a further step of rotating said ball valve so that said portion prevents communication between said inlet and said outlet.
References Cited (Backward Citations)
US350510A
Cited
US421224A
Cited
US926774A
Cited
CH42304A
Cited
US1056344A
Cited
US1229038A
Cited
US1264775A
Cited
US1333048A
Cited
CH110371A
Cited
US1666918A
Cited
US1757237A
Cited
US1825512A
Cited
US2621012A
Cited
US2660560A
Cited
US2859611A
Cited
US3134405A
Cited
US3386461A
Cited
US3517554A
Cited
US3854497A
Cited
US3817097A
Cited
CA963446A
Cited
US4130128A
Cited
US4244393A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-04-06 | 1990-10-06 | 1991-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-06 | 1994-10-06 | 1995-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-06 | 1998-10-06 | 1999-04-07 | $7700.00 | Window Closed / Lapsed |