US5361924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tank closure
Assignee: Stant USA Corp
•
Filing: 1993-04-01
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Granted: 1994-11-08
•
Expires: 2013-04-01
Abstract
Abstract A closure for the filler pipe of a tank, comprises a gasket mounted in a gasket housing and arranged to engage with a flange on an end of a filler pipe, a cap stem coupled to the gasket housing for relative angular movement about the axis of the filler pipe and having a central portion adapted to project into the filler pipe. A clamp ring carries a pair of clamping lugs adapted to pass through cut-outs in the flange and, after angular movement, to engage under the flange. A spring acts between the stem and the clamp ring to urge the clamping lugs into engagement with the flange. A cam acts between the clamp ring and the gasket housing to hold the clamping lugs out of engagement with the flange until the clamp ring is at a predetermined orientation relative to the gasket housing. A locking ring couples the stem to the clamp ring. The cam is so arranged that, when the clamp ring is in the above-mentioned predetermined orientation relative to the gasket housing, the locking ring disengages the stem from the clamp ring so as to permit relative angular movement and a second cam formation on the locking ring engages with a complementary surface on the clamp ring to wedge the clamping lugs in engagement with the flange.
Inventors
- 👤 Paul W. Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:24
CPC Classifications
B; B60; B60K; B60K15/00; B60K15/03; B60K15/04; B60K15/0406
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
221 words
A closure for the filler pipe of a tank, comprising a gasket mounted in a gasket housing and arranged to engage with a flange on an end of a filler pipe, a cap stem coupled to the gasket housing for relative angular movement about the axis of the filler pipe and having a central portion adapted to project into the filler pipe, a clamp ring carrying a pair of clamping lugs adapted to pass through cut-outs in the flange and, after angular movement, to engage under the flange, coupling means operating to couple the stem to the clamp ring for simultaneous angular movement, spring means acting between the stem and the clamp ring for urging the clamping lugs into engagement with the flange, camming means acting between the clamp ring and the gasket housing and operative to hold the clamping lugs out of engagement with the flange until the clamp ring is at a predetermined orientation relative to the gasket housing and then to cause the coupling means to disengage the stem from the clamp ring so as to permit relative angular movement, and a second cam formation on the coupling means arranged to engage with a complementary surface on the clamp ring to wedge the clamping lugs in engagement with the flange when the clamping lugs engage with the flange.
Claim 2
Dependent Claim
221 words
A closure for the filler pipe of a tank, comprising a gasket mounted in a gasket housing and arranged to engage with a flange on an end of a filler pipe, a cap stem coupled to the gasket housing for relative angular movement about the axis of the filler pipe and having a central portion adapted to project into the filler pipe, a clamp ring carrying a pair of clamping lugs adapted to pass through cut-outs in the flange and, after angular movement, to engage under the flange, coupling means operating to couple the stem to the clamp ring for simultaneous angular movement, spring means acting between the stem and the clamp ring for urging the clamping lugs into engagement with the flange, camming means acting between the clamp ring and the gasket housing and operative to hold the clamping lugs out of engagement with the flange until the clamp ring is at a predetermined orientation relative to the gasket housing and then to cause the coupling means to disengage the stem from the clamp ring so as to permit relative angular movement, and a second cam formation on the coupling means arranged to engage with a complementary surface on the clamp ring to wedge the clamping lugs in engagement with the flange when the clamping lugs engage with the flange.
Claim 3
Dependent Claim
77 words
A closure according to claim 1, wherein the second cam formation is formed on a projection on the coupling means which is retained in a recess in the clamp ring while the camming means holds the clamping lugs out of engagement with the flange and which moves out of said recess to allow the second cam formation to engage with the complementary surface when the clamp ring is at a predetermined orientation relative to the gasket housing.
Claim 4
Dependent Claim
18 words
A closure according to claim 2, wherein the coupling means comprises a locking ring journaled on the stem.
Claim 5
Dependent Claim
37 words
A closure according to claim 3, wherein the locking ring is coupled to the stem by means allowing limited relative angular movement and second spring means is arranged to bias the coupling means into its wedging position.
Claim 6
Dependent Claim
48 words
A closure according to claim 4, wherein the means allowing limited relative angular movement comprises a segmental slot formed in the stem in alignment with the locking ring and the second spring means comprises a spring engaging between the locking ring and an end of the segmental slot.
Claim 7
Dependent Claim
39 words
A closure according to claim 3, wherein the locking ring has an abutment projection on its surface furthest from the gasket housing, and a drive formation is secured to the stem and adapted to engage with the abutment projection.
Claim 8
Dependent Claim
39 words
A closure according to claim 4, wherein the locking ring has an abutment projection on its surface furthest from the gasket housing, and a drive formation is secured to the stem and adapted to engage with the abutment projection.
Claim 9
Dependent Claim
39 words
A closure according to claim 5, wherein the locking ring has an abutment projection on its surface furthest from the gasket housing, and a drive formation is secured to the stem and adapted to engage with the abutment projection.
Claim 10
Dependent Claim
18 words
A closure according to claim 1, wherein the coupling means comprises a locking ring journaled on the stem.
Claim 11
Dependent Claim
37 words
A closure according to claim 9, wherein the locking ring is coupled to the stem by means allowing limited relative angular movement and second spring means is arranged to bias the coupling means into its wedging position.
Claim 12
Dependent Claim
48 words
A closure according to claim 10, wherein the means allowing limited relative angular movement comprises a segmental slot formed in the stem in alignment with the locking ring and the second spring means comprises a spring engaging between the locking ring and an end of the segmental slot.
Claim 13
Dependent Claim
39 words
A closure according to claim 9, wherein the locking ring has an abutment projection on its surface furthest from the gasket housing, and a drive formation is secured to the stem and adapted to engage with the abutment projection.
Claim 14
Dependent Claim
39 words
A closure according to claim 10, wherein the locking ring has an abutment projection on its surface furthest from the gasket housing, and a drive formation is secured to the stem and adapted to engage with the abutment projection.
Claim 15
Dependent Claim
39 words
A closure according to claim 11, wherein the locking ring has an abutment projection on its surface furthest from the gasket housing, and a drive formation is secured to the stem and adapted to engage with the abutment projection.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-11-07 | 1998-05-09 | 1998-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-11-07 | 2002-05-09 | 2002-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-11-07 | 2006-05-09 | 2006-11-08 | $7700.00 | Window Closed / Lapsed |