Patent US3800727A successfully refreshed from Google Patents.
Patent US4231544A successfully refreshed from Google Patents.
US4231544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locking crankcase drain valve assembly
Assignee: ASA GROUP Corp PO BOX 6 LINE LEXINGTON PA 18932 A CORP OF
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Filing: 1979-04-19
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Granted: 1980-11-04
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Expires: 1999-04-19
Abstract
Abstract A crankcase drain valve assembly for replacing the standard oil drain plug commonly used for draining used oil from the crankcases of most internal combustion engines. The assembly includes a valve housing for mounting in the drain opening of the crankcase formed with a central passage therethrough and a transversely extending valve opening intersecting the central passage. A valve member is pivotally attached to the valve body and is formed to move in and out of sealing engagement with the central passage. A lever attached to the valve member permits opening and closing of the valve member without any special tools. The valve member is held in the closed position by rotating a lever until a boss on the lever arm is received in a detent in the valve housing.
Inventors
- 👤 Duane C. Balch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:35
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/02; F16K3/12; F01; F01M; F01M11/00; F01M11/04; F01M11/0408; F16K3/04; F16K3/06; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/6855; Y10T137/6881
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
382 words
A locking crankcase drain valve assembly comprising: a. a valve housing (3) having an outer wall for mounting in the drain opening (2) of a crankcase (1), including: (1) a shank portion (4) for mounting in said drain opening, (2) a valve body portion (6) integrally connected to said shank portion, (3) a central passage (7) through said shank and valve body portions having an inlet (8) in said shank portion and an outlet (9) in said valve body portion, (4) a valve body opening (11) formed in said valve body portion extending transversely through said central passage and forming a valve seat (12) surrounding said central passage, (5) hinge attachment means (13) formed in said valve body portion positioned offset from said central passage, (6) lever holding means (14) formed in said valve body portion at a selected distance from said hinge attachment means; b. a valve member (16) formed for receipt within said valve opening and formed with pivot means (17) for pivotal attachment to said hinge means including, (1) a seat portion (18) formed for sealing engagement with said valve seat surrounding said central passage, (2) a spring lever (19) extending beyond said valve body portion having engaged and unengaged positions, (3) lever attachment means (21) formed in said lever at a selected distance from said hinge attachment means (13) which in its unstressed state is less than the distance of said lever holding means (14) from said hinge attachment means (13) for engaged attachment to said lever holding means (14) so that when said lever is in said engaged position said lever is in tension, (4) grip means (22) extending from said lever for receiving a finger or tool for moving said lever and thereby moving said valve member in and out of sealing engagement with said central passage; c. said valve body opening in said valve body portion is formed with a tapered portion (24) in the area forming said valve seat; and d. said valve member is formed with a tapered portion (26) in the area registering with said tapered portion of said valve opening in said valve body portion so that when said lever is in said engaged position, said tapered portion (26) is in compression with said tapered portion (24) of said valve body.
Claim 2
Dependent Claim
382 words
A locking crankcase drain valve assembly comprising: a. a valve housing (3) having an outer wall for mounting in the drain opening (2) of a crankcase (1), including: (1) a shank portion (4) for mounting in said drain opening, (2) a valve body portion (6) integrally connected to said shank portion, (3) a central passage (7) through said shank and valve body portions having an inlet (8) in said shank portion and an outlet (9) in said valve body portion, (4) a valve body opening (11) formed in said valve body portion extending transversely through said central passage and forming a valve seat (12) surrounding said central passage, (5) hinge attachment means (13) formed in said valve body portion positioned offset from said central passage, (6) lever holding means (14) formed in said valve body portion at a selected distance from said hinge attachment means; b. a valve member (16) formed for receipt within said valve opening and formed with pivot means (17) for pivotal attachment to said hinge means including, (1) a seat portion (18) formed for sealing engagement with said valve seat surrounding said central passage, (2) a spring lever (19) extending beyond said valve body portion having engaged and unengaged positions, (3) lever attachment means (21) formed in said lever at a selected distance from said hinge attachment means (13) which in its unstressed state is less than the distance of said lever holding means (14) from said hinge attachment means (13) for engaged attachment to said lever holding means (14) so that when said lever is in said engaged position said lever is in tension, (4) grip means (22) extending from said lever for receiving a finger or tool for moving said lever and thereby moving said valve member in and out of sealing engagement with said central passage; c. said valve body opening in said valve body portion is formed with a tapered portion (24) in the area forming said valve seat; and d. said valve member is formed with a tapered portion (26) in the area registering with said tapered portion of said valve opening in said valve body portion so that when said lever is in said engaged position, said tapered portion (26) is in compression with said tapered portion (24) of said valve body.
Claim 3
Dependent Claim
72 words
A valve assembly described in claim 1 comprising: a. said hinge attachment means consists of a pin opening formed in said valve body portion axially alligned with said central passage but offset therefrom; b. said valve member is formed with a pin opening registering with said pin opening in said valve body portion; and c. a pin (28) registering with said pin opening in said valve body portion and said valve member.
Claim 4
Dependent Claim
62 words
A valve assembly as described in claim 1 comprising: a. said lever holding means including an indent formed in the outer wall of said valve body portion; and b. said attachment means formed in said lever includes a protrusion extending radilly inwardly for registering receipt with said indent in said valve body portion when said valve member is in a closed position.
Claim 5
Dependent Claim
46 words
A valve assembly described in claim 1 comprising: a. said lever is formed in an arcuate shape; and b. a slot formed in the side of said valve body portion for partial receipt of said lever when said lever is attached to said hinge attachment means.
Claim 6
Dependent Claim
34 words
A valve assembly as described in claim 1 comprising: a. said central passage through said valve body portion below said valve body opening is greater in cross sectional area than through said shank portion.
References Cited (Backward Citations)
US303656A
Cited
US450588A
Cited
GB189417246A
Cited
US2095696A
Cited
US2657705A
Cited
US3049334A
Cited
US3299904A
Cited
US3677369A
Cited
US3874478A
Cited
US3954250A
Cited
US4086981A
Cited
US4025048A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-11-04 | 1984-05-05 | 1984-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-04 | 1988-05-05 | 1988-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-04 | 1992-05-05 | 1992-11-04 | $7700.00 | Window Closed / Lapsed |