US3556541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Annular packing with metallic reinforcement
Assignee: Individual
•
Filing: 1966-09-21
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Granted: 1971-01-19
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Expires: 1986-09-21
Abstract
Abstract Spirally wound ribbons of metallic and asbestos-type amiantite materials form an annular packing for fluids. Adjacent spirally wound turns are glued to each other and turns of materials differ to provide portions of all metal and all amiantite. Turns are formed into guidance eyes or ears for passage of bolts and thus cooperating for truing and fixing the packing in place. Metallic ribbon is formed of one material selected from aluminum, copper, nickel, lead, iron and stainless steel in a thickness ranging from 0.05 up to 3 mm. while thickness of the amiantite portions are provided for different fluids.
Inventors
- 👤 Giuseppe Salono
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:06
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/10; F16J15/12; F16J15/121; F16J15/125
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
132 words
A packing ring made up of flat strips of metal and of compressed asbestos fibers, one strip of metal and one strip of compressed asbestos fibers being wound in face to face engagement into a first plurality of convolutions to form an endless packing member, said strips having radially outer and radially inner axially extending peripheral surfaces and flat parallel radially extending end surfaces, said strips also including at least one strip of compressed asbestos fibers wound circumferentially into a plurality of additional convolutions spaced radially outwardly from said first plurality of convolutions, and circumferentially spaced radially extending rib members interposed between and supportingly engaging the said first and said additional convolutions, and cement joining said strips in face to face engagement to each other and to the radially extending rib members.
Claim 2
Dependent Claim
132 words
A packing ring made up of flat strips of metal and of compressed asbestos fibers, one strip of metal and one strip of compressed asbestos fibers being wound in face to face engagement into a first plurality of convolutions to form an endless packing member, said strips having radially outer and radially inner axially extending peripheral surfaces and flat parallel radially extending end surfaces, said strips also including at least one strip of compressed asbestos fibers wound circumferentially into a plurality of additional convolutions spaced radially outwardly from said first plurality of convolutions, and circumferentially spaced radially extending rib members interposed between and supportingly engaging the said first and said additional convolutions, and cement joining said strips in face to face engagement to each other and to the radially extending rib members.
Claim 3
Dependent Claim
23 words
A packing ring according to claim 1, in which the said rib members are of less axial height than the adjoining spaced convolutions.
Claim 4
Dependent Claim
64 words
A packing ring accordIng to claim 1, in which said additional convolutions spaced radially outwardly from said first plurality of convolutions include at least two series of radially spaced convolutions, each series being composed of alternating strips of metal and compressed asbestos fibers, and intervening convolutions between said series of convolutions of asbestos fibers of less axial height than the convolutions of said series.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |