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US4959110A Expired / Lapsed US ⏱️ 0.0 years remaining

Method for lining the inner surface of a cylindrical or domed cylindrical member with an elastomeric material

Assignee: Northrop Grumman Innovation Systems LLC
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Filing: 1988-05-11
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Granted: 1990-09-25
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Expires: 2008-05-11
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Abstract

Abstract A method for lining the inner surface of a generally cylindrical member or domed cylindrical member with an elastomeric material. A let-off head is provided within the member for applying a continuous strip of tacky elastomeric material to the inner surface thereof as it rotates. The head is moved axially as the strip is applied to form a layer of elastomeric material over the inner surface. After the head is removed, the applied elastomer material is cured.

Inventors

  • 👤 Peter G. Russell

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 17:11
CPC Classifications
B; B29; B29C; B29C63/00; B29C63/26; B29C63/30; B29C63/32; B29C53/00; B29C53/56; B29C53/58; B29C53/72; B29K; B29K2021/00; B29K2105/00; B29K2105/24; Y; Y10; Y10S; Y10S118/00; Y10S118/10

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 194 words
A method for lining the inner surface of a generally cylindrical member with an elastomeric material comprises the steps of: a. rotating the generally cylindrical member about its rotational axis; b. providing within the generally cylindrical member a head for applying a continuous strip of tacky elastomeric material to the inner surface of the generally cylindrical member as it rotates; c. transporting a continuous strip of tacky elastomeric material to the head for application to the inner surface of the generally cylindrical member as it rotates; d. applying the strip of tacky elastomeric material to the inner surface of the generally cylindrical member as it rotates; e. moving the head axially as the strip is applied to form a layer of elastomeric material over the inner surface of the generally cylindrical member; f. removing the head from within the generally cylindrical member; and g. curing the applied elastomeric material, the method further comprises providing an elevated platform which extends axially through the generally cylindrical member, providing a support member for the head, moving the support member axially along said platform, and conveying the elastomeric strip to said head from outside the generally cylindrical member.
Claim 2
Independent Claim 194 words
A method for lining the inner surface of a generally cylindrical member with an elastomeric material comprises the steps of: a. rotating the generally cylindrical member about its rotational axis; b. providing within the generally cylindrical member a head for applying a continuous strip of tacky elastomeric material to the inner surface of the generally cylindrical member as it rotates; c. transporting a continuous strip of tacky elastomeric material to the head for application to the inner surface of the generally cylindrical member as it rotates; d. applying the strip of tacky elastomeric material to the inner surface of the generally cylindrical member as it rotates; e. moving the head axially as the strip is applied to form a layer of elastomeric material over the inner surface of the generally cylindrical member; f. removing the head from within the generally cylindrical member; and g. curing the applied elastomeric material, the method further comprises providing an elevated platform which extends axially through the generally cylindrical member, providing a support member for the head, moving the support member axially along said platform, and conveying the elastomeric strip to said head from outside the generally cylindrical member.
Claim 3
Dependent Claim 17 words
A method according to claim 1 further comprises cantileverly supporting the head within the generally cylindrical member.
Claim 4
Dependent Claim 35 words
A method according to claim 1 further comprises rotating the head support member about a vertical axis to position the head for applying the elastomeric strip to a domed portion of the generally cylindrical member.
Claim 5
Independent Claim 198 words
A method for lining the inner surface of a generally cylindrical member with an elastomeric material comprises the steps of: a. rotating the generally cylindrical member about its rotational axis; b. providing within the generally cylindrical member a head for applying a continuous strip of tacky elastomeric material to the inner surface of the generally cylindrical member as it rotates; c. transporting a continuous strip of tacky elastomeric material to the head for application to the inner surface of the generally cylindrical member as it rotates; d. applying the strip of tacky elastomeric material to the inner surface of the generally cylindrical member as it rotates; e. moving the head axially as the strip is applied to form a layer of elastomeric material over the inner surface of the generally cylindrical member; f. removing the head from within the generally cylindrical member; and g. curing the applied elastomeric material, the method further comprises providing an elevated platform which extends axially through the generally cylindrical member, providing a support member for the head, moving the support member axially along said platform, conveying the elastomeric strip to said head from outside the generally cylindrical member, and extruding the elastomeric strip.
Claim 6
Independent Claim 198 words
A method for lining the inner surface of a generally cylindrical member with an elastomeric material comprises the steps of: a. rotating the generally cylindrical member about its rotational axis; b. providing within the generally cylindrical member a head for applying a continuous strip of tacky elastomeric material to the inner surface of the generally cylindrical member as it rotates; c. transporting a continuous strip of tacky elastomeric material to the head for application to the inner surface of the generally cylindrical member as it rotates; d. applying the strip of tacky elastomeric material to the inner surface of the generally cylindrical member as it rotates; e. moving the head axially as the strip is applied to form a layer of elastomeric material over the inner surface of the generally cylindrical member; f. removing the head from within the generally cylindrical member; and g. curing the applied elastomeric material, the method further comprises providing an elevated platform which extends axially through the generally cylindrical member, providing a support member for the head, moving the support member axially along said platform, conveying the elastomeric strip to said head from outside the generally cylindrical member, and extruding the elastomeric strip.
Claim 7
Independent Claim 188 words
A method for making a rocket motor comprises the steps of: a. providing a geneally cylindrical case having a rotational axis; b. rotating the case about its rotational axis; c. providing within the case a head for applying a continuous strip of tacky elastomeric material to the inner surface of the case as it rotates; d. transporting a continuous strip of tacky elastomeric material to the head for application to the inner surface of the case as it rotates; e. applying the strip of tacky elastomer material to the inner surface of the case as it rotates; f. moving the head axially as the strip is applied to provide a layer of elastomeric material over the inner surface of the case; g. removing the head from within the case; h. curing the applied elastomeric material to provide an insulator; and i. providing propellant material within the case, the method further comprises providing an elevated platform which extends axially through the case, providing a support member for the head, moving the support member axially along said platform, and conveying the elastomeric strip to said head from outside the case.
Claim 8
Independent Claim 188 words
A method for making a rocket motor comprises the steps of: a. providing a geneally cylindrical case having a rotational axis; b. rotating the case about its rotational axis; c. providing within the case a head for applying a continuous strip of tacky elastomeric material to the inner surface of the case as it rotates; d. transporting a continuous strip of tacky elastomeric material to the head for application to the inner surface of the case as it rotates; e. applying the strip of tacky elastomer material to the inner surface of the case as it rotates; f. moving the head axially as the strip is applied to provide a layer of elastomeric material over the inner surface of the case; g. removing the head from within the case; h. curing the applied elastomeric material to provide an insulator; and i. providing propellant material within the case, the method further comprises providing an elevated platform which extends axially through the case, providing a support member for the head, moving the support member axially along said platform, and conveying the elastomeric strip to said head from outside the case.
Claim 9
Dependent Claim 15 words
A method according to claim 5 further comprises cantileverly supporting the head within the case.
Claim 10
Dependent Claim 12 words
A method according to claim 5 further comprises extruding the elastomeric strip.
Claim 11
Independent Claim 213 words
A method for making a rocket motor comprises the steps of: a. providing a generally cylindrical case having a rotational axis; b. rotating the case about its rotational axis; c. providing within the case a head for applying a continuous strip of tacky elastomeric material to the inner surface of the case as it rotates; d. transporting a continuous strip of tacky elastomeric material to the head for application to the inner surface of the case as it rotates; e. applying the strip of tacky elastomeric material to the inner surface of the case as it rotates; f. moving the head axially as the strip is applied to provide a layer of elastomeric material over the inner surface of the case; g. removing the head from within the case; h. curing the applied elastomeric material to provide an insulator; and i. providing propellant material within the case, the method further comprises providing an elevated platform which extends axially through the case, providing a support member for the head, moving the support member axially along said platform, conveying the elastomeric strip to said head from outside the case, and rotating the head support member about a vertical axis to position the head for applying the elastomeric strip to a domed portion of the case.
Claim 12
Independent Claim 213 words
A method for making a rocket motor comprises the steps of: a. providing a generally cylindrical case having a rotational axis; b. rotating the case about its rotational axis; c. providing within the case a head for applying a continuous strip of tacky elastomeric material to the inner surface of the case as it rotates; d. transporting a continuous strip of tacky elastomeric material to the head for application to the inner surface of the case as it rotates; e. applying the strip of tacky elastomeric material to the inner surface of the case as it rotates; f. moving the head axially as the strip is applied to provide a layer of elastomeric material over the inner surface of the case; g. removing the head from within the case; h. curing the applied elastomeric material to provide an insulator; and i. providing propellant material within the case, the method further comprises providing an elevated platform which extends axially through the case, providing a support member for the head, moving the support member axially along said platform, conveying the elastomeric strip to said head from outside the case, and rotating the head support member about a vertical axis to position the head for applying the elastomeric strip to a domed portion of the case.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1993-09-24 1994-03-26 1994-09-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1997-09-24 1998-03-26 1998-09-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2001-09-24 2002-03-26 2002-09-25 $7700.00 Window Closed / Lapsed

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