Patent US3646887A successfully refreshed from Google Patents.
US3646887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Model rocket and shock cord retainer therefor
Assignee: General Mills Fun Group Inc
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Filing: 1970-07-30
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Granted: 1972-03-07
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Expires: 1990-07-30
Abstract
Abstract A shock cord and retainer therefor. The shock cord retains in joined relation the nose cone and body tube of a model rocket during and after explosive separation of these parts, so that they will fall close together and be more easily recoverable. The retainer is a single piece of flexible material such as paper, to be attached inside the tube. Three holes which may be equidistant are cut into the piece of paper along its centerline. The cord is threaded through the holes with one end extending through the center hole to the top side of the paper. The cord extends along the bottom side of the paper then upward through a second hole, then around the side edge adjacent said hole, then again along the bottom surface, and finally upward through the third hole. The retainer is secured to the tube by an adhesive or bonding agent, such as glue or pressure-sensitive adhesive.
Inventors
- 👤 George H Stine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:50
CPC Classifications
A; A63; A63H; A63H27/00; A63H27/005; F; F42; F42B; F42B15/00; F42B15/36
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
185 words
A shock cord retainer for a model rocket comprising a piece of lightweight material having mutually opposed top and bottom surfaces, at least three holes therein through said surfaces, said holes being positioned along a single line with one of said holes in the approximate center of said piece, another of said holes off to one side of said one hole, and the other of said holes off to the opposite side of said one hole, a cord having one end extending upward through said center hole and threaded to extend along the bottom surface of said piece upward through said another hole, along the top surface, then around the free edge of said piece adjacent said another hole, along the bottom surface of said piece, and then upward through said other hole to the top surface of said piece, and the bottom surface of said piece being adapted to accept adhesive so said bottom surface can be readily attached to the interior surface of the body tube of a model rocket with a portion of said shock cord between said bottom and interior surfaces.
Claim 2
Dependent Claim
185 words
A shock cord retainer for a model rocket comprising a piece of lightweight material having mutually opposed top and bottom surfaces, at least three holes therein through said surfaces, said holes being positioned along a single line with one of said holes in the approximate center of said piece, another of said holes off to one side of said one hole, and the other of said holes off to the opposite side of said one hole, a cord having one end extending upward through said center hole and threaded to extend along the bottom surface of said piece upward through said another hole, along the top surface, then around the free edge of said piece adjacent said another hole, along the bottom surface of said piece, and then upward through said other hole to the top surface of said piece, and the bottom surface of said piece being adapted to accept adhesive so said bottom surface can be readily attached to the interior surface of the body tube of a model rocket with a portion of said shock cord between said bottom and interior surfaces.
Claim 3
Dependent Claim
22 words
A shock cord retainer for a model rocket as called for in claim 1 wherein said piece of lightweight material is flexible.
Claim 4
Dependent Claim
25 words
A shock cord retainer for a model rocket as called for in claim 1 wherein said holes are positioned along the centerline of said piece.
Claim 5
Dependent Claim
48 words
A shock cord retainer for a model rocket as called for in claim 1 wherein said piece of lightweight material is flexible, said holes are positioned along the centerline of said piece, and said another hole and said other hole are approximately equal distance from said one hole.
Claim 6
Dependent Claim
211 words
A model rocket having a body tube, a nose cone adapted for frictional engagement in the forward end of said body tube, a shock cord having one end securely fastened to the nose cone, and a shoCk cord retainer provided with mutually opposed top and bottom surfaces, three holes through said surfaces along a single line, a first one of said holes being in the approximate center of said retainer, a second one of said holes off to the side of said first hole, a third one of said holes off to the opposite side of said first hole, the other end of said shock cord being held by said retainer with said other end extending upward through said first hole and threaded to pass along the bottom surface of said retainer, upward through said second hole, along the top surface of said retainer, over the free edge of said retainer adjacent said second hole, along the bottom surface of said retainer, and then upward through said third hole, and means for securely bonding said retainer in place on the interior surface of said body tube with a portion of said shock cord between said bottom and interior surfaces adjacent where said body tube and said nose cone are frictionally engaged.
Claim 7
Dependent Claim
211 words
A model rocket having a body tube, a nose cone adapted for frictional engagement in the forward end of said body tube, a shock cord having one end securely fastened to the nose cone, and a shoCk cord retainer provided with mutually opposed top and bottom surfaces, three holes through said surfaces along a single line, a first one of said holes being in the approximate center of said retainer, a second one of said holes off to the side of said first hole, a third one of said holes off to the opposite side of said first hole, the other end of said shock cord being held by said retainer with said other end extending upward through said first hole and threaded to pass along the bottom surface of said retainer, upward through said second hole, along the top surface of said retainer, over the free edge of said retainer adjacent said second hole, along the bottom surface of said retainer, and then upward through said third hole, and means for securely bonding said retainer in place on the interior surface of said body tube with a portion of said shock cord between said bottom and interior surfaces adjacent where said body tube and said nose cone are frictionally engaged.
Claim 8
Dependent Claim
66 words
A model rocket as called for in claim 5 wherein said three holes are positioned along the centerline of said retainer, said second and third holes are approximately equal distance from said first hole, and said bonding means is adhesive between the bottom surface of said retainer and the interior surface of said body tube adjacent where said body tube and said nose are frictionally engaged.
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) | 1975-03-07 | 1975-09-06 | 1976-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-07 | 1979-09-06 | 1980-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-07 | 1983-09-06 | 1984-03-07 | $7700.00 | Window Closed / Lapsed |