US3890877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Staple orienting apparatus
Assignee: Aerojet Rocketdyne Inc
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Filing: 1969-10-06
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Granted: 1975-06-24
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Expires: 1989-10-06
Abstract
Abstract Apparatus for casting uncured solid propellant having metal staples disbursed therein, which apparatus is a container having a discharge opening covered by a fine mesh screen or a plate with multiple openings. A means is operably associated with the container for forcing the staple containing propellant through the screen whereby the staples within the propellant are oriented in the direction of propellant flow and the propellant is deposited in the casting with the staples in a planar orientation.
Inventors
- 👤 Edwin L Lista
- 👤 Kenneth S Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:28
CPC Classifications
C; C06; C06B; C06B21/00; C06B21/0033; C06B21/0058; C06B45/00; C06B45/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
65 words
An apparatus for casting uncured solid propellant having elongated metal staples randomly dispersed therein comprising: a tube for containing the uncured solid propellant; and a fine mesh screen fixedly attached to the bottom end of said tube, said screen having openings therein whereby when the solid propellant passes through said screen, the metal staples of said propellant are oriented in the direction of propellant flow.
Claim 2
Independent Claim
65 words
An apparatus for casting uncured solid propellant having elongated metal staples randomly dispersed therein comprising: a tube for containing the uncured solid propellant; and a fine mesh screen fixedly attached to the bottom end of said tube, said screen having openings therein whereby when the solid propellant passes through said screen, the metal staples of said propellant are oriented in the direction of propellant flow.
Claim 3
Dependent Claim
43 words
The apparatus for casting uncured solid propellant having elongated metal staples randomly dispersed therein as described in claim 1, and in addition: a means for applying pressure to the top of the propellant in said tube to force said propellant through said screen.
Claim 4
Dependent Claim
39 words
The apparatus for casting uncured solid propellant having elongated metal staples randomly dispersed therein as described in claim 1, and in addition: a means for vibrating said screen to impart a radial moment to the propellant leavinG said screen.
Claim 5
Dependent Claim
60 words
The apparatus for casting uncured solid propellant having elongated metal staples randomly dispersed therein as described in claim 1, and in addition: a second fine mesh screen fixedly attached to said tube adjacent the bottom thereof and above the other screen, said second screen having openings therein whereby said second screen initiates staple orientation in the direction of propellant flow.
Claim 6
Dependent Claim
36 words
The apparatus for casting uncured solid propellant having elongated metal staples randomly dispersed therein as described in claim 1, and in addition: means operably associated with said screen for encouraging said propellant to form into droplets.
References Cited (Backward Citations)
US3311678A
Cited
US3359350A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-23 | 1978-12-23 | 1979-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-23 | 1982-12-23 | 1983-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-23 | 1986-12-23 | 1987-06-24 | $7700.00 | Window Closed / Lapsed |