Patent US4397419A successfully refreshed from Google Patents.
Patent US4660475A successfully refreshed from Google Patents.
US4660475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spooled propellant charge and method of manufacture thereof
Assignee: ATK Launch Systems LLC
•
Filing: 1985-07-31
•
Granted: 1987-04-28
•
Expires: 2005-07-31
Abstract
Abstract A propellant charge is manufactured by spooling a strand of propellant onto a form member. In accordance with one embodiment of the invention, the form member is a spool composed of propellant, and the spooled propellant, including the spool, is loaded into a charge housing.
Inventors
- 👤 Gerald W. Rogowski
- 👤 Frank H. Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:46
CPC Classifications
C; C06; C06B; C06B21/00; C06B21/0033; C06B21/0075; C06B45/00; F; F42; F42B; F42B5/00; F42B5/02; F42B5/16
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
98 words
A method of manufacturing a propellant charge comprises the steps of: a. preparing a strand of propellant; b. preparing a form member to include an elongated member and a ridge member at each end of the elongated member which ridge member extends radially outwardly from the elongated member such that the form member has the shape of a spool upon which the propellant strand may be spooled; and c. spooling the propellant strand on the form member between the ridge members whereby the ridge members serve to maintain the integrity of the spooled propellant on the elongated member.
Claim 2
Independent Claim
98 words
A method of manufacturing a propellant charge comprises the steps of: a. preparing a strand of propellant; b. preparing a form member to include an elongated member and a ridge member at each end of the elongated member which ridge member extends radially outwardly from the elongated member such that the form member has the shape of a spool upon which the propellant strand may be spooled; and c. spooling the propellant strand on the form member between the ridge members whereby the ridge members serve to maintain the integrity of the spooled propellant on the elongated member.
Claim 3
Dependent Claim
14 words
A method according to claim 1 further comprises forming the form member from propellant.
Claim 4
Dependent Claim
24 words
A method according to claim 2 further comprises forming a hollow core in the form member and inserting an igniter in the hollow core.
Claim 5
Dependent Claim
23 words
A method according to claim 3 further comprises forming apertures in the core to provide communication between the igniter and the spooled propellant.
Claim 6
Dependent Claim
16 words
A method according to claim 2 further comprises loading the spooled propellant into a charge housing.
Claim 7
Dependent Claim
28 words
A method according to claim 5 wherein the step of loading the spooled propellant includes loading the form member with the propellant spooled thereon into the charge housing.
Claim 8
Dependent Claim
19 words
A method according to claim 5 further comprises curing the spooled propellant before loading it into a charge housing.
Claim 9
Dependent Claim
16 words
A method according to claim 1 further comprises loading the spooled propellant into a charge housing.
Claim 10
Dependent Claim
19 words
A method according to claim 1 wherein the step of preparing the propellant strand comprises extruding the propellant strand.
Claim 11
Dependent Claim
73 words
A propellant charge comprises a form member including an elongate member and a ridge member disposed at each end of and extending radially outwardly from said elongate member such that the form member has the shape of a spool, and at least one strand of propellant material spooled on said form member between said ridge members whereby the ridge members serve to maintain the integrity of the spooled propellant on the elongate member.
Claim 12
Dependent Claim
73 words
A propellant charge comprises a form member including an elongate member and a ridge member disposed at each end of and extending radially outwardly from said elongate member such that the form member has the shape of a spool, and at least one strand of propellant material spooled on said form member between said ridge members whereby the ridge members serve to maintain the integrity of the spooled propellant on the elongate member.
Claim 13
Dependent Claim
16 words
A propellant charge according to claim 10 wherein said form member is composed of propellant material.
Claim 14
Dependent Claim
24 words
A propellant charge according to claim 10 further comprises a charge housing in which said form member with propellant material spooled thereon is inserted.
Claim 15
Dependent Claim
30 words
A propellant charge according to claim 10 further comprises means defining a hollow core in said form member for inserting an igniter, and an igniter inserted in said hollow core.
Claim 16
Dependent Claim
30 words
A propellant charge according to claim 13 further comprises means defining apertures in said form member for providing communication between said hollow core and said spooled strand of propellant material.
Claim 17
Dependent Claim
17 words
A propellant charge according to claim 10 wherein said strand of propellant material is extruded propellant material.
Claim 18
Dependent Claim
24 words
A propellant charge comprises a form member composed of propellant material and at least one strand of propellant material spooled onto said form member.
Claim 19
Dependent Claim
24 words
A propellant charge comprises a form member composed of propellant material and at least one strand of propellant material spooled onto said form member.
Claim 20
Dependent Claim
30 words
A propellant charge according to claim 16 further comprises means defining a hollow core in said form member for inserting an igniter, and an igniter inserted in said hollow core.
Claim 21
Dependent Claim
30 words
A propellant charge according to claim 17 further comprises means defining apertures in said form member for providing communication between said hollow core and said spooled strand of propellant material.
References Cited (Backward Citations)
US3811358A
Cited
US3216307A
Cited
US3348445A
Cited
US3574800A
Cited
US3608421A
Cited
US4068589A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-04-27 | 1990-10-27 | 1991-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-27 | 1994-10-27 | 1995-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-27 | 1998-10-27 | 1999-04-28 | $7700.00 | Window Closed / Lapsed |