Patent US3931933A successfully refreshed from Google Patents.
US3931933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for the pouring of fast foaming reactants
Assignee: Bayer Corp
•
Filing: 1974-06-27
•
Granted: 1976-01-13
•
Expires: 1994-06-27
Abstract
Abstract A method and apparatus for the pouring of fast foaming reactants which essentially comprises the use of a disposable nozzle liner and a nozzle assembly adapted for use with such a disposable liner. The invention encompasses air flushing the nozzle assembly after each pouring cycle until the foam build-up on the nozzle liner becomes unacceptable. The liner is then replaced and operations are continued.
Inventors
- 👤 John G. Cairns
- 👤 John L. McPherson
- 👤 James D. Orefice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:36
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/80; B29B7/30; B29B7/58; B29B7/582
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
160 words
A nozzle assembly for use with fast forming reactants comprising: a generally tubular nozzle having a smooth internal bore and having a connecting means on its external surface, a generally tubular nozzle housing having a connecting means on a portion of its exterior surface adapted to engage a mixhead and having a first internal bore separated from a second internal bore by a traverse wall having a centrally located aperture, said first bore containing a portion of said nozzle and having connecting means in engagement with the connecting means of said nozzle and said second bore being adapted to mate with said mixhead, and a disposable nozzle liner disposed within the bore of said nozzle having a generally smooth internal bore and a radially outwardly directed annular flange disposed between the traverse wall of said nozzle housing and the end of said nozzle disposed within said nozzle housing and forming a sealing relationship with said nozzle and said traverse wall.
Claim 2
Dependent Claim
160 words
A nozzle assembly for use with fast forming reactants comprising: a generally tubular nozzle having a smooth internal bore and having a connecting means on its external surface, a generally tubular nozzle housing having a connecting means on a portion of its exterior surface adapted to engage a mixhead and having a first internal bore separated from a second internal bore by a traverse wall having a centrally located aperture, said first bore containing a portion of said nozzle and having connecting means in engagement with the connecting means of said nozzle and said second bore being adapted to mate with said mixhead, and a disposable nozzle liner disposed within the bore of said nozzle having a generally smooth internal bore and a radially outwardly directed annular flange disposed between the traverse wall of said nozzle housing and the end of said nozzle disposed within said nozzle housing and forming a sealing relationship with said nozzle and said traverse wall.
Claim 3
Dependent Claim
178 words
A nozzle assembly for use with fast forming reactants comprising: a generally tubular nozzle having a smooth internal bore, a radially inwardly directed annular flange disposed at one end of the nozzle and a means for connecting on a portion of its external surface, a generally tubular nozzle housing having connecting means on a portion of its exterior adapted to engage a mixhead and having a first internal bore separated from a second internal bore by a traverse wall with a centrally located aperture, said first bore containing a portion of said nozzle terminating in the end not having said flange and having connecting means in engagement with the connecting means on the exterior of said nozzle and said second bore being adapted to mate with a portion of said mixhead, and a disposable nozzle liner having a generally tubular body and a smooth internal bore and being disposed within the bore of said nozzle between the traverse wall of said nozzle housing and the annular flange of said nozzle and forming a sealing relationship with said flange.
Claim 4
Dependent Claim
178 words
A nozzle assembly for use with fast forming reactants comprising: a generally tubular nozzle having a smooth internal bore, a radially inwardly directed annular flange disposed at one end of the nozzle and a means for connecting on a portion of its external surface, a generally tubular nozzle housing having connecting means on a portion of its exterior adapted to engage a mixhead and having a first internal bore separated from a second internal bore by a traverse wall with a centrally located aperture, said first bore containing a portion of said nozzle terminating in the end not having said flange and having connecting means in engagement with the connecting means on the exterior of said nozzle and said second bore being adapted to mate with a portion of said mixhead, and a disposable nozzle liner having a generally tubular body and a smooth internal bore and being disposed within the bore of said nozzle between the traverse wall of said nozzle housing and the annular flange of said nozzle and forming a sealing relationship with said flange.
Claim 5
Dependent Claim
173 words
A nozzle assembly for use with fast foaming reactants comprising: a generally tubular nozzle having a smooth internal bore and having male threads on a portion of its external surface, a generally tubular nozzle housing having male threads on that portion of its exterior adapted to engage a mixhead and having a first internal bore separated from a second internal bore by a transverse wall having a centrally located aperture, said first bore containing a portion of said nozzle and having female threads in engagement with the male threads of said nozzle and said second bore being adapted to mate with said mixhead and being surrounded by said male nozzle housing threads, and a disposable nozzle liner disposed within the bore of said nozzle having a generally tubular body, a smooth internal bore and a radially outwardly directed annular flange disposed between the transverse wall of said nozzle housing and the end of said nozzle disposed within said nozzle housing and forming a sealing relationship with said nozzle end and said transverse wall.
Claim 6
Dependent Claim
173 words
A nozzle assembly for use with fast foaming reactants comprising: a generally tubular nozzle having a smooth internal bore and having male threads on a portion of its external surface, a generally tubular nozzle housing having male threads on that portion of its exterior adapted to engage a mixhead and having a first internal bore separated from a second internal bore by a transverse wall having a centrally located aperture, said first bore containing a portion of said nozzle and having female threads in engagement with the male threads of said nozzle and said second bore being adapted to mate with said mixhead and being surrounded by said male nozzle housing threads, and a disposable nozzle liner disposed within the bore of said nozzle having a generally tubular body, a smooth internal bore and a radially outwardly directed annular flange disposed between the transverse wall of said nozzle housing and the end of said nozzle disposed within said nozzle housing and forming a sealing relationship with said nozzle end and said transverse wall.
Claim 7
Dependent Claim
182 words
A nozzle assembly for use with fast foaming reactants comprising: a generally tubular nozzle having a smooth internal bore, a radially inwardly directed annular flange disposed at one end of the nozzle and male threads on a portion of its external surface, a generally tubular nozzle housing having male threads on that portion of its exterior adapted to engage a mixhead and having a first internal bore separated from a second internal bore by a transverse wall with a centrally located aperture, said first bore containing the portion of said nozzle terminating in the end not having said flange and having female threads in engagement with the male threads of said nozzle and said second bore being adapted to mate with a portion of said mixhead and being surrounded by said male nozzle housing threads, and a disposable nozzle liner having a generally tubular body and a smooth internal bore and being disposed within the bore of said nozzle between the transverse wall of said nozzle housing and the annular flange of said nozzle and forming a sealing relationship with said flange.
Claim 8
Dependent Claim
182 words
A nozzle assembly for use with fast foaming reactants comprising: a generally tubular nozzle having a smooth internal bore, a radially inwardly directed annular flange disposed at one end of the nozzle and male threads on a portion of its external surface, a generally tubular nozzle housing having male threads on that portion of its exterior adapted to engage a mixhead and having a first internal bore separated from a second internal bore by a transverse wall with a centrally located aperture, said first bore containing the portion of said nozzle terminating in the end not having said flange and having female threads in engagement with the male threads of said nozzle and said second bore being adapted to mate with a portion of said mixhead and being surrounded by said male nozzle housing threads, and a disposable nozzle liner having a generally tubular body and a smooth internal bore and being disposed within the bore of said nozzle between the transverse wall of said nozzle housing and the annular flange of said nozzle and forming a sealing relationship with said flange.
References Cited (Backward Citations)
FR682673A
Cited
US2392408A
Cited
US2953248A
Cited
US3143147A
Cited
US3335758A
Cited
US3693884A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-12 | 1979-07-14 | 1980-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-12 | 1983-07-14 | 1984-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-12 | 1987-07-14 | 1988-01-13 | $7700.00 | Window Closed / Lapsed |