Patent FR774124A successfully refreshed from Google Patents.
Patent US4131319A successfully refreshed from Google Patents.
US4131319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transporting device and method of transporting
Assignee: CONAIR Inc
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Filing: 1975-06-26
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Granted: 1978-12-26
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Expires: 1995-06-26
Abstract
Abstract This invention relates to a bulk material unloader and more particularly to a device, such as a probe or pick-up tube, for conveying a fluidized particulate or pulverant material in an improved manner and an improved method of transporting such particulate or pulverant material.
Inventors
- 👤 Daniel J. Klos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:18
CPC Classifications
B; B65; B65G; B65G53/00; B65G53/34; B65G53/40; B65G53/42
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
155 words
A device for use in transporting a particulate or pulverant material comprising a pair of radially spaced telescopic tubular members with the inner telescopic member thereof having a closed end with at least one axially extending passageway in the side thereof spaced axially from said closed end with one end of said passageway being adjacent to said closed end and with the outer telescopic member thereof having the end closest to said closed end in slidable engagement with the outer surface of said inner telescopic member, said pair of telescopic members being selectively axially locatable with respect to each other such that the extent of said passageway communicating therebetween is selectively variable and at least one of said tubular members having the end thereof remote from said passageway being adapted to be connected to means for providing a gaseous fluid flow through the space between said tubular members, said passageway and said inner telescopic member.
Claim 2
Independent Claim
155 words
A device for use in transporting a particulate or pulverant material comprising a pair of radially spaced telescopic tubular members with the inner telescopic member thereof having a closed end with at least one axially extending passageway in the side thereof spaced axially from said closed end with one end of said passageway being adjacent to said closed end and with the outer telescopic member thereof having the end closest to said closed end in slidable engagement with the outer surface of said inner telescopic member, said pair of telescopic members being selectively axially locatable with respect to each other such that the extent of said passageway communicating therebetween is selectively variable and at least one of said tubular members having the end thereof remote from said passageway being adapted to be connected to means for providing a gaseous fluid flow through the space between said tubular members, said passageway and said inner telescopic member.
Claim 3
Dependent Claim
30 words
A device as set forth in claim 1 in which the cross-sectional area of said passageway is equal to the cross-sectional area of the interior of said inner tubular member.
Claim 4
Dependent Claim
32 words
A device as set forth in claim 1 in which the cross-sectional area of said passageway is equal to the cross-sectional area of the radial space between said pair of tubular members.
Claim 5
Dependent Claim
18 words
A device as set forth in claim 1 in which said passageway is a single axially extending slot.
Claim 6
Dependent Claim
28 words
A device as set forth in claim 4 in which the cross-sectional area of said slot equals the cross-sectional area of the interior of said inner tubular member.
Claim 7
Dependent Claim
30 words
A device as set forth in claim 4 in which the cross-sectional area of said slot equals the cross-sectional area of the radial space between said pair of tubular members.
Claim 8
Dependent Claim
43 words
A device as set forth in claim 4 in which the cross-sectional area of said slot equals the cross-sectional area of the radial space between said pair of tubular members and equals the cross-sectional area of the interior of said inner tubular member.
References Cited (Backward Citations)
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Cited
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US3031233A
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US3136584A
Cited
US3416844A
Cited
US3436125A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-12-25 | 1982-06-26 | 1982-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-25 | 1986-06-26 | 1986-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-25 | 1990-06-26 | 1990-12-26 | $7700.00 | Window Closed / Lapsed |