US4284105A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Discrete spiral flow imparting device
Assignee: Union Carbide Corp
•
Filing: 1979-11-09
•
Granted: 1981-08-18
•
Expires: 1999-11-09
Abstract
Abstract Apparatus for imparting spiral motion to material flowing in a tube comprising a relatively short spiral member anchored to prevent movement relative to the tube. The spiral member has a maximum length shorter than the tube and is capable of imparting spiral motion to the entire amount of material flowing in the tube.
Inventors
- 👤 Isaac Moked
- 👤 Richard H. Handwerk
- 👤 Hans J. Goettler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:34
CPC Classifications
F; F15; F15D; F15D1/00; F15D1/02; B; B01; B01F; B01F25/00; B01F25/40; B01F25/42; B01F25/43; B01F25/431; B01F25/4314; B01J; B01J19/00; B01J19/0053; B01J19/24; B01J19/2415; A; A61; A61M; A61M25/00; A61M25/0067; A61M25/0068; A61M2025/0073; B01F2025/91; B01F2025/913; B01F2215/00; B01F2215/04; B01F2215/0413; B01F2215/0418; B01F2215/0431; B01F2215/0436; B01F2215/0468; B01F2215/0472
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
97 words
Apparatus for installation at a joint of two tubes for imparting spiral motion to material flowing in said tubes comprising: (a) a spiral member having two ends and a central portion, wherein said central portion has a diameter exceeding that of said ends; and (b) a hollow housing snugly fitting over said spiral member, said housing comprising: a ring to fit snugly around the central portion of said spiral member, mating blocks having tapered openings for said spiral member and a seat for said ring, and means for holding said mating blocks in contact with each other.
Claim 2
Dependent Claim
97 words
Apparatus for installation at a joint of two tubes for imparting spiral motion to material flowing in said tubes comprising: (a) a spiral member having two ends and a central portion, wherein said central portion has a diameter exceeding that of said ends; and (b) a hollow housing snugly fitting over said spiral member, said housing comprising: a ring to fit snugly around the central portion of said spiral member, mating blocks having tapered openings for said spiral member and a seat for said ring, and means for holding said mating blocks in contact with each other.
Claim 3
Dependent Claim
96 words
Apparatus for imparting spiral motion to material flowing in a tube comprising a relatively short spiral member anchored within a modular member capable of attachment to said tube to preserve movement relative to said tube, said spiral member having a maximum length shorter than said tube and being capable of imparting predetermined spiral motion to material flowing in said tube, said spiral member having two ends and a central portion, wherein said central portion has a diameter exceeding that of said ends, and said apparatus further comprising a hollow housing snugly fitting over said spiral member.
Claim 4
Dependent Claim
96 words
Apparatus for imparting spiral motion to material flowing in a tube comprising a relatively short spiral member anchored within a modular member capable of attachment to said tube to preserve movement relative to said tube, said spiral member having a maximum length shorter than said tube and being capable of imparting predetermined spiral motion to material flowing in said tube, said spiral member having two ends and a central portion, wherein said central portion has a diameter exceeding that of said ends, and said apparatus further comprising a hollow housing snugly fitting over said spiral member.
Claim 5
Dependent Claim
52 words
The apparatus of claim 2 wherein said housing comprises: (a) a ring to fit snugly around the central portion of said spiral member; (b) mating blocks having tapered openings for said spiral members and a seat for said ring; and (c) means for holding said mating blocks in contact with each other.
Claim 6
Dependent Claim
21 words
The apparatus of claim 2 wherein the tube has a joint and wherein the spiral member is anchored at said joint.
Claim 7
Dependent Claim
22 words
The apparatus of claim 2 or 4 wherein the spiral member has a pitch of about 1/2 to 10 tube inner diameters.
Claim 8
Dependent Claim
28 words
The apparatus of claim 2 or 4 wherein the tube is part of a polymerization reactor having a length to diameter ratio of at least 500 to 1.
References Cited (Backward Citations)
US2680414A
Cited
US3223388A
Cited
US3470912A
Cited
US3582045A
Cited
US3664638A
Cited
US3862022A
Cited
US4026817A
Cited
US4037758A
Cited
US4183682A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-17 | 1985-02-16 | 1985-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-17 | 1989-02-16 | 1989-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-17 | 1993-02-16 | 1993-08-18 | $7700.00 | Window Closed / Lapsed |