US3679333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packing for air compressor valve
Assignee: Industrie Magneti Marelli SRL
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Filing: 1971-03-16
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Granted: 1972-07-25
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Expires: 1991-03-16
Abstract
Abstract In an air compressor, including flapper type blade valves over the inlet and outlet bores of the compressor, the invention is an improved packing for mounting the captured end of each blade valve. Each packing is comprised of a wide, rigid, metal sheet and two thin layers of yieldable material on opposite surfaces of the sheet. The blade is in a recess of and has the same thickness as one of the thin layers.
Inventors
- 👤 Bruno Zoppi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:37
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/08; F04; F04B; F04B39/00; F04B39/10; F04B39/102; F04B39/1073; F04B39/12; F04B39/125; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
244 words
In an air compressor comprising an intake chamber, an exhaust chamber, a pumping chamber, means for varying the volume of said pumping chamber, an intake bore connecting said intake chamber with said pumping chamber and an exhaUst bore connecting said pumping chamber with said exhaust chamber; an exhaust bore blade valve positioned to block said exhaust bore when air is being drawn into said pumping chamber through said intake bore; an intake bore blade valve positioned to block said intake bore when air is being exhausted from said pumping chamber through said exhaust bore; the improvement comprising, a first packing securing a first end of said exhaust bore valve, thereby permitting the other end of said exhaust bore valve to be shifted alternately from a blocking to an unblocking position with respect to said exhaust bore; and a second packing securing a first end of said intake bore valve, thereby permitting the other end of said intake bore valve to be shifted alternately from a blocking to an unblocking position with respect to said intake bore; each said packing comprising a central, substantially nonyieldable sheet and a layer on each side of said sheet comprised of a relatively more yieldable material; means supporting each said packing in said compressor by way of engaging said outer layers of each said packing, whereby the structure of each said packing reduces to a minimum the permanent yielding of the packing during flexing of its respective said valve.
Claim 2
Dependent Claim
244 words
In an air compressor comprising an intake chamber, an exhaust chamber, a pumping chamber, means for varying the volume of said pumping chamber, an intake bore connecting said intake chamber with said pumping chamber and an exhaUst bore connecting said pumping chamber with said exhaust chamber; an exhaust bore blade valve positioned to block said exhaust bore when air is being drawn into said pumping chamber through said intake bore; an intake bore blade valve positioned to block said intake bore when air is being exhausted from said pumping chamber through said exhaust bore; the improvement comprising, a first packing securing a first end of said exhaust bore valve, thereby permitting the other end of said exhaust bore valve to be shifted alternately from a blocking to an unblocking position with respect to said exhaust bore; and a second packing securing a first end of said intake bore valve, thereby permitting the other end of said intake bore valve to be shifted alternately from a blocking to an unblocking position with respect to said intake bore; each said packing comprising a central, substantially nonyieldable sheet and a layer on each side of said sheet comprised of a relatively more yieldable material; means supporting each said packing in said compressor by way of engaging said outer layers of each said packing, whereby the structure of each said packing reduces to a minimum the permanent yielding of the packing during flexing of its respective said valve.
Claim 3
Dependent Claim
168 words
In the air compressor of claim 1, said intake and said exhaust bores being provided in an appropriately bored plate which is disposed within said compressor between said pumping chamber, on the one hand, and said intake and said exhaust chambers, on the other hand; the improvement further comprising, said packing for said exhaust bore valve being interposed between said bored plate and a head which contains both said intake and said exhaust chambers; said packing for said intake bore valve being interposed between said plate and a cylinder means containing said pumping chamber, wherein said head is in engagement with one of said yieldable layers of said packing for said exhaust bore valve and said bored plate is in engagement with the other said yieldable layer of that said packing; said bored plate is in engagement with one of said yieldable layers of said packing for said intake bore valve, and said cylinder means is in engagement with the other said yieldable layer of that said packing.
Claim 4
Dependent Claim
32 words
In the air compressor of claim 2, the improvement further comprising, said thinner layers of said packing and said central nonyieldable sheet thereof having the capacity of airtight sealing of said compressor.
Claim 5
Dependent Claim
80 words
In the air compressor of claim 2, the improvement further comprising, that said yieldable layer of each said packing which is in engagement with said bored plate is also provided with a recess for receiving the respective said valve; and that said yieldable layer is of a thickness corresponding to the thickness of the respective said valve, whereby each said valve is held securely in position between said bored plate and the said central sheet of its respective said packing.
Claim 6
Dependent Claim
32 words
In the air compressor of claim 1, the improvement further comprising the total thickness of each packing is chosen so as to define a desired lift of the respective said blade valve.
Claim 7
Dependent Claim
26 words
In the air compressor of claim 1, the improvement further comprising, said nonyieldable sheet having a thickness greater than each of its associated said yieldable layers.
Claim 8
Dependent Claim
24 words
In the air compressor of claim 6, the improvement further comprising, said nonyieldable sheet being approximately twice as thick as each said yieldable layer.
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) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |