US3903952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blow tube assembly
Assignee: Lear Siegler Inc
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Filing: 1973-06-22
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Granted: 1975-09-09
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Expires: 1993-06-22
Abstract
Abstract A blow plate and blow tube assembly including a blow plate having a material dispensing passageway, a lower surface, a counterbore extending into the lower surface and open to the dispensing passageway, fluid circulating passages in communication with the counterbore adjacent the fluid dispensing passageway and threaded holes extending into the lower surface adjacent the counterbore. A blow tube means as disposed in the counterbore and including a central tubular member, an outer jacket member surrounding the central tubular member and secured to the central tubular member at the bottom and being spaced from the central tubular member to define a cooling fluid circulating space above the lower ends thereof. A resilient seal means is disposed in the counterbore about the upper ends of the central tubular member and the jacket member for maintaining the central tubular member and the jacket member in sealed but spaced relationship to the counterbore so that neither the central member nor the jacket member contact the blow plate. Bolts are disposed in the threaded holes in the blow plate for retaining the blow tube means in the counterbore. The resilient seal allows movement of the blow tube assembly in case of misalignment and includes a pair of passages establishing fluid communication between the fluid circulating passages in the blow plate and the fluid circulating space about the central tubular member. A tube is disposed in the fluid circulating space and has its upper end disposed in one of the passages in the seal means.
Inventors
- 👤 Robert E Bego
- 👤 William J Thomas
- 👤 Anthony J Voltattorni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:06
CPC Classifications
B; B22; B22C; B22C15/00; B22C15/23; B22C15/24; B22C15/245
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
107 words
A blow tube assembly for use with a core-forming blow plate, said assembly comprising; a central tubular member, an outer jacket member surrounding said central tubular member, said jacket member being secured to said central tubular member at the lower ends thereof, said jacket member being spaced from said central tubular member to define a fluid circulating space above the lower ends thereof, and resilient seal means disposed about the upper end of said central tubular member and about the upper end of said jacket member for maintaining said central tubular member and said jacket member in sealed spaced relationship to a blow plate when attached thereto.
Claim 2
Dependent Claim
107 words
A blow tube assembly for use with a core-forming blow plate, said assembly comprising; a central tubular member, an outer jacket member surrounding said central tubular member, said jacket member being secured to said central tubular member at the lower ends thereof, said jacket member being spaced from said central tubular member to define a fluid circulating space above the lower ends thereof, and resilient seal means disposed about the upper end of said central tubular member and about the upper end of said jacket member for maintaining said central tubular member and said jacket member in sealed spaced relationship to a blow plate when attached thereto.
Claim 3
Dependent Claim
27 words
An assembly as set forth in claim 1 wherein said seal means includes a lip disposed about the outer surface of the upper end of said jacket.
Claim 4
Dependent Claim
21 words
An assembly as set forth in claim 2 wherein said seal includes a fluid inlet passage and a fluid outlet passage.
Claim 5
Dependent Claim
29 words
An assembly as set forth in claim 3 including a tube having its upper end disposed in one of said passages and extending downwardly into said fluid circulating space.
Claim 6
Dependent Claim
13 words
An assembly as set forth in claim 4 wherein said tube is removable.
Claim 7
Dependent Claim
24 words
An assembly as set forth in claim 4 wherein said tube is in frictional engagement with said central tubular member and said jacket member.
Claim 8
Dependent Claim
13 words
An assembly as set forth in claim 4 wherein said tube is flexible.
Claim 9
Dependent Claim
35 words
An assembly as set forth in claim 4 wherein said tube includes an opening at the bottom thereof which is in a plane disposed at an acute angle to the longitudinal axis of said tube.
Claim 10
Dependent Claim
30 words
An assembly as set forth in claim 4 wherein the upper end of said jacket member is defined by an annular projection extending upwardly from a radially inwardly extending land.
Claim 11
Dependent Claim
27 words
An assembly as set forth in claim 9 wherein said seal means includes an annular recess to define said lip, said projection being disposed in said recess.
Claim 12
Dependent Claim
18 words
An assembly as set forth in claim 10 wherein said seal means engages said land adjacent said projection.
Claim 13
Dependent Claim
40 words
An assembly as set forth in claim 11 wherein the upper end of said central tubular member is disposed above said projection on said jacket member, said seal means being disposed about the upper end of said central tubular member.
Claim 14
Dependent Claim
18 words
An assembly as set forth in claim 12 wherein said jacket member is at least in part frusto-conical.
Claim 15
Dependent Claim
145 words
A blow tube assembly for use with a core-forming blow plate, said assembly comprising; a central tubular member, an outer jacket member surrounding said central tubular member, said central tubular member defining a straight passageway open at both the top and bottom ends thereof, said jacket member being secured to said central tubular member about the open bottom end of said central tubular member, said jacket member being spaced from said central tubular member from said bottom end to the top to define an annular opening at the top of said assembly between said members and to define a fluid circulating space between said members, a tube extending downwardlY into said fluid circulating space from said annular opening, said tube being flexible and in frictional engagement with said central tubular member and said jacket so as to be readily removable from said fluid circulating space.
Claim 16
Dependent Claim
145 words
A blow tube assembly for use with a core-forming blow plate, said assembly comprising; a central tubular member, an outer jacket member surrounding said central tubular member, said central tubular member defining a straight passageway open at both the top and bottom ends thereof, said jacket member being secured to said central tubular member about the open bottom end of said central tubular member, said jacket member being spaced from said central tubular member from said bottom end to the top to define an annular opening at the top of said assembly between said members and to define a fluid circulating space between said members, a tube extending downwardlY into said fluid circulating space from said annular opening, said tube being flexible and in frictional engagement with said central tubular member and said jacket so as to be readily removable from said fluid circulating space.
Claim 17
Dependent Claim
35 words
An assembly as set forth in claim 14 wherein said tube includes an opening at the bottom thereof which is in a plane disposed at an acute angle to the longitudinal axis of said tube.
Claim 18
Dependent Claim
188 words
A blow plate and blow tube assembly comprising: a blow plate having a material dispensing passageway, a lower surface, a counterbore extending thereinto from said lower surface and open to said dispensing passageway, fluid circulating passages in communication with said counterbore adjacent said dispensing passageway, and at least one threaded hole extending into said lower surface adjacent said counterbore; blow tube means disposed in said counterbore and including a central tubular member, an outer jacket member surrounding said central tubular member, said jacket member being secured to said central tubular member at the lower ends thereof, said jacket member being spaced from said central tubular member to define a fluid circulating space above the lower ends thereof, and resilient seal means disposed in said counterbore and about the upper ends of said central tubular member and said jacket member for maintaining said central tubular member and said jacket member in sealed spaced relationship to said counterbore so that neither said central tubular member nor said jacket member contact said blow plate; and bolt means disposed in said threaded hole for retaining said blow tube means in said counterbore.
Claim 19
Dependent Claim
188 words
A blow plate and blow tube assembly comprising: a blow plate having a material dispensing passageway, a lower surface, a counterbore extending thereinto from said lower surface and open to said dispensing passageway, fluid circulating passages in communication with said counterbore adjacent said dispensing passageway, and at least one threaded hole extending into said lower surface adjacent said counterbore; blow tube means disposed in said counterbore and including a central tubular member, an outer jacket member surrounding said central tubular member, said jacket member being secured to said central tubular member at the lower ends thereof, said jacket member being spaced from said central tubular member to define a fluid circulating space above the lower ends thereof, and resilient seal means disposed in said counterbore and about the upper ends of said central tubular member and said jacket member for maintaining said central tubular member and said jacket member in sealed spaced relationship to said counterbore so that neither said central tubular member nor said jacket member contact said blow plate; and bolt means disposed in said threaded hole for retaining said blow tube means in said counterbore.
Claim 20
Dependent Claim
33 words
An assembly as set forth in claim 16 wherein said seal means includes passages therethrough to establish fluid communication between said fluid circulating passages in said blow plate and said fluid circulating space.
Claim 21
Dependent Claim
33 words
An assembly as set forth in claim 17 including a tube having its upper end disposed in one of said passages in said seal means and extending downwardly into said fluid circulating space.
Claim 22
Dependent Claim
24 words
An assembly as set forth in claim 18 wherein said tube is in frictional engagement with said central tubular member and said jacket member.
Claim 23
Dependent Claim
67 words
An assembly as set forth in claim 18 wherein the upper end of said jacket member is defined by an annular projection extending upwardly from a radially inwardly extending land, said seal means including an annular recess defining an annular lip, said projection being disposed in said recess so that said lip is disposed on the exterior surface of said projection and in engagement with the counterbore.
Claim 24
Dependent Claim
53 words
An assembly as set forth in claim 20 wherein said exterior surface of said projection defines the major periphery of said blow tube means and extends downwardly to a radially inwardly extending shoulder, said exterior surface being spaced from the wall of said counterbore, said bolt means being in engagement with said shoulder.
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) | 1978-09-08 | 1979-03-10 | 1979-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-08 | 1983-03-10 | 1983-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-08 | 1987-03-10 | 1987-09-09 | $7700.00 | Window Closed / Lapsed |