Patent US4263069A successfully refreshed from Google Patents.
US4263069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inhibitor for gun propellants
Assignee: United States Department of the Navy
•
Filing: 1979-11-05
•
Granted: 1981-04-21
•
Expires: 1999-11-05
Abstract
Abstract Gun propellant is coated with an oligomer having the structure: ##STR1## wherein R is --CH 2 CH 2 CH 2 Si(OCH 3 ) 3 ; wherein ns an integer of from 5 to 50 and wherein m is an integer of from 1 to 5. The purpose of the coating is to decrease the peak pressure produced but make the pressure that is produced last longer.
Inventors
- 👤 Russell Reed, Jr.
- 👤 Kenneth L. Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:23
CPC Classifications
C; C06; C06B; C06B21/00; C06B21/0083; C06B45/00; C06B45/18; C06B45/20; C06B45/22
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
87 words
A method for improving the efficiency of and lowering the peak pressure produced by a high force, high flame temperature gun propellant comprising the steps of: A. coating the propellant with an oligomer having the formula: ##STR5## wherein R is --CH 2 CH 2 CH 2 Si(OCH 3 ) 3 , wherein n is an integer having a value of from 5 to 50 and wherein m is an integer having a value of from 1 to 5; and B. allowing the oligomer to form a polymer.
Claim 2
Independent Claim
87 words
A method for improving the efficiency of and lowering the peak pressure produced by a high force, high flame temperature gun propellant comprising the steps of: A. coating the propellant with an oligomer having the formula: ##STR5## wherein R is --CH 2 CH 2 CH 2 Si(OCH 3 ) 3 , wherein n is an integer having a value of from 5 to 50 and wherein m is an integer having a value of from 1 to 5; and B. allowing the oligomer to form a polymer.
Claim 3
Dependent Claim
21 words
A method according to claim 1 wherein the coating of the oligomer is applied in the form of a neat liquid.
Claim 4
Dependent Claim
20 words
A method according to claim 1 wherein the coating of the oligomer is applied in the form of a solution.
Claim 5
Dependent Claim
27 words
A method according to claim 3 wherein said solution consists essentially of the oligomer dissolved in a solvent selected from the group consisting of methanol and ethanol.
References Cited (Backward Citations)
USRE27025E
Cited
US3137741A
Cited
US3665862A
Cited
US3985592A
Cited
US3984264A
Cited
US3948697A
Cited
US3767488A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-04-20 | 1984-10-20 | 1985-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-20 | 1988-10-20 | 1989-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-20 | 1992-10-20 | 1993-04-21 | $7700.00 | Window Closed / Lapsed |