Patent US1825301A successfully refreshed from Google Patents.
US3677514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ball valve
Assignee: Individual
•
Filing: 1971-02-24
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Granted: 1972-07-18
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Expires: 1991-02-24
Abstract
Abstract A ball valve of stamped plate, comprising a hollow valve body having fluid inlet and outlet, within said body a cylindrical band containing a hollow ball provided with two diametrically opposite apertures, said ball being rotatable according to an axis at right angles to the flow direction between open and closed positions, a ball control rod engaging said ball by its lower end and, in turn, being pivoted in a collar projecting from said cylindrical band, seals being interposed between said ball, cylindrical band and housing.
Inventors
- 👤 Vittorio Mencarelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:38
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/06; F16K5/0647; F16K5/0626; F16K5/0663; F16K5/0673
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
86 words
A ball valve of stamped plate, comprising a hollow valve body having fluid inlet and outlet, within said body a cylindrical band containing a hollow ball provided with two diametrically opposite apertures, said ball being rotatable according to an axis at right angles to the flow direction between open and closed positions, a ball control rod engaging said ball by its lower end and, in turn, being pivoted in a collar projecting from said cylindrical band, seals being interposed between said ball, cylindrical band and housing.
Claim 2
Dependent Claim
86 words
A ball valve of stamped plate, comprising a hollow valve body having fluid inlet and outlet, within said body a cylindrical band containing a hollow ball provided with two diametrically opposite apertures, said ball being rotatable according to an axis at right angles to the flow direction between open and closed positions, a ball control rod engaging said ball by its lower end and, in turn, being pivoted in a collar projecting from said cylindrical band, seals being interposed between said ball, cylindrical band and housing.
Claim 3
Dependent Claim
80 words
A ball valve as claimed in claim 1, wherein said ball can be rotated by about 90*, said operating rod having a flat inner end with rounded edges and cooperating with a lower portion of the pivoting collar having a partially cylindrical inner profile with two opposite straight sections, the latter being inclined by 45* relative to the axis of said cylindrical band to define two stop positions for said operating rod which are angularly spaced apart by about 90*.
Claim 4
Dependent Claim
25 words
A ball valve as claimed in claim 2, wherein said flat inner end of the operating rod engages in a corresponding slit in said ball.
Claim 5
Dependent Claim
15 words
A ball valve as claimed in claim 3, wherein said slit is provided by milling.
Claim 6
Dependent Claim
31 words
A ball valve as claimed in claim 3, wherein said slit is provided by blanking and dishing, the blanked and dished portion remaining fast with the ball and below said slit.
Claim 7
Dependent Claim
42 words
A ball valve as claimed in claim 2, wherein the lower portion of said collar is integral and provided by extrusion stamping from said cylindrical band, the remaining portion of the collar being cylindrical and attached by welding to the underlying portion.
Claim 8
Dependent Claim
51 words
A ball valve as claimed in claim 2, wherein said collar is fast with said cylindrical band, said collar being provided by extrusion stamping from said cylindrical band with a lower portion of said collar having a larger diameter than the remaining cylindrical portion and having said partially cylindrical inner profile.
Claim 9
Dependent Claim
35 words
A ball valve as claimed in claim 1, wherein said collar has its endmost edge outward enlarged or flared to form the housing seating for a toroidal asbestos seal suitable to provide a safety sealing.
Claim 10
Dependent Claim
25 words
A ball valve as claimed in claim 1, wherein said operating rod is provided with at least one circumferential seating for accomodating a toroidal seal.
Claim 11
Dependent Claim
53 words
A ball valve as claimed in claim 1, wherein said hollow body of stamped plate is divided into two symmetrical cylindrical caps according to a plane at right angles to the flow direction, each of said caps being provided with an outer peripheral flange having holes for the passage of assembling bolts therethrough.
Claim 12
Dependent Claim
58 words
A ball valve as claimed in claim 1, wherein a first thrust ring seal is interposed between said ball and each end of said cylindrical band, and between each end of said band and a corresponding opposite shoulder on said valve body there being interposed a second ring seal extending to contact the outer surface of the ball.
Claim 13
Dependent Claim
50 words
A ball valve as claimed in claim 11, wherein said second seal has a circumferential rib projecting at least on one side of the outer edge of said seal, said rib cooperating with an inclined surface on the corresponding end/edge of the cylindrical band to provide for an outward sealing.
Claim 14
Dependent Claim
47 words
A ball valve as claimed in claim 12, wherein said housing has a bearing conical shoulder for each of the seals, a resilient metal washer being interposed between said seal and shoulder and acting for maintaining said seal constantly adhering to the outer surface of the ball.
Claim 15
Dependent Claim
25 words
A ball valve as claimed in claim 13, wherein said metal washer extends by its inner edge to graze said outer surface of the ball.
Claim 16
Dependent Claim
28 words
A ball valve as claimed in claim 1, wherein said body has a cylindrical connection at said inlet and outlet, each of said connections having an outer threading.
Claim 17
Dependent Claim
28 words
A ball valve as claimed in claim 1, wherein said body has a cylindrical connection at said inlet and outlet, each of said connections having an inner threading.
Claim 18
Dependent Claim
44 words
A ball valve as claimed in claim 1, wherein said body has a cylindrical connection at said inlet and outlet, a circular flange being threaded on each of said connections and the connection edge being outward turned over for securing said flange in position.
References Cited (Backward Citations)
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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) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |