US3892869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
End plug closures for shirred casing sticks and methods for making them
Assignee: Union Carbide Corp
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Filing: 1974-03-27
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Granted: 1975-07-01
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Expires: 1994-03-27
Abstract
Abstract Improved end closures for shirred casing sticks and methods for making them which comprise inturning a predetermined amount of a casing material into a forming tube and then compressing the inturned casing material against a fixed surface to form a free floating, semi-floating or fully anchored type flat end plug which when anchored within the fore end of a shirred stick may or may not form an integral part thereof.
Inventors
- 👤 Arthur L Sheridan
- 👤 Walter V Marbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:13
CPC Classifications
A; A22; A22C; A22C13/00; A22C13/0009; Y; Y10; Y10S; Y10S206/00; Y10S206/802
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
117 words
A HOLLOW SHIRRED STICK OF TUBULAR CASING HAVING AN OPEN END AND A CLOSED END, SAID CLOSED END COMPRISING A PLUG OF COMPRESSED CASING OF WHICH A FIRST PORTION IS SECURED TO AT LEAST A PORTION OF THE FORE END SURFACE OF THE SHIRRED STICK WITH THE REMAINDER GENERALLY CONFORMING TO THE BORE OF THE SHIRRED STICK AND EXTENDING WITHIN SAID BORE SO AS TO FORM AN ANNULAR SPACE BETWEEN THE ENTENDED PORTION OF SAID PLUG AND THE INTERNAL WALL OF THE SHIRRED STICK WHEREIN THE COMPRESSED CASING OF THE PLUG IS CASING DESHIRRED FROM THE FORE END OF THE SHIRRED STICK THEREBY RESULTING IN SAID PLUG BEING A FREE FLOATING PLUG INTEGRAL WITH SAID SHIRRED STICK.
Claim 2
Dependent Claim
117 words
A HOLLOW SHIRRED STICK OF TUBULAR CASING HAVING AN OPEN END AND A CLOSED END, SAID CLOSED END COMPRISING A PLUG OF COMPRESSED CASING OF WHICH A FIRST PORTION IS SECURED TO AT LEAST A PORTION OF THE FORE END SURFACE OF THE SHIRRED STICK WITH THE REMAINDER GENERALLY CONFORMING TO THE BORE OF THE SHIRRED STICK AND EXTENDING WITHIN SAID BORE SO AS TO FORM AN ANNULAR SPACE BETWEEN THE ENTENDED PORTION OF SAID PLUG AND THE INTERNAL WALL OF THE SHIRRED STICK WHEREIN THE COMPRESSED CASING OF THE PLUG IS CASING DESHIRRED FROM THE FORE END OF THE SHIRRED STICK THEREBY RESULTING IN SAID PLUG BEING A FREE FLOATING PLUG INTEGRAL WITH SAID SHIRRED STICK.
Claim 3
Dependent Claim
155 words
A hollow shirred stick of tubular casing having an open end and a closed end, said closed end comprising a plug of compressed casing of which a first portion is secured to at least a portion of the fore end surface of the shirred stick with the remainder generally conforming to the bore of the shirred stick and extending within said bore so as to form an annular space between the extended portion of said plug and the internal wall of the shirred stick wherein said plug is semi-floating plug in which the outer surface of said first portion of the compressed casing of said plug is firmly anchored to the pleats comprising the bore of the shirred stick at its outermost fore end and wherein the compressed casing of the semi-floating plug is casing deshirred from the fore end of the shirred stick thereby resulting in said plug being integral with said shirred stick.
Claim 4
Dependent Claim
155 words
A hollow shirred stick of tubular casing having an open end and a closed end, said closed end comprising a plug of compressed casing of which a first portion is secured to at least a portion of the fore end surface of the shirred stick with the remainder generally conforming to the bore of the shirred stick and extending within said bore so as to form an annular space between the extended portion of said plug and the internal wall of the shirred stick wherein said plug is semi-floating plug in which the outer surface of said first portion of the compressed casing of said plug is firmly anchored to the pleats comprising the bore of the shirred stick at its outermost fore end and wherein the compressed casing of the semi-floating plug is casing deshirred from the fore end of the shirred stick thereby resulting in said plug being integral with said shirred stick.
Claim 5
Independent Claim
142 words
A method of closing an end of a hollow shirred stick of tubular casing which comprises: a. placing a hollow cylindrical forming tube into the bore of a hollow shirred stick of tubular casing; b. inturning a portion of the casing at the fore end of the shirred stick into said forming tube; c. placing a relatively fixed surface against the fore end of the shirred stick containing the inturned casing; d. advancing a pack rod within the hollow cylindrical forming tube toward said fixed surface thereby compressing the inturned casing against saId fixed surface to form a compressed plug of casing within the bore of the shirred stick; and e. removing said forming tube from the bore of said shirred stick thereby forming an annular space between the extended portion of the plug and the internal wall of the shirred stick.
Claim 6
Independent Claim
142 words
A method of closing an end of a hollow shirred stick of tubular casing which comprises: a. placing a hollow cylindrical forming tube into the bore of a hollow shirred stick of tubular casing; b. inturning a portion of the casing at the fore end of the shirred stick into said forming tube; c. placing a relatively fixed surface against the fore end of the shirred stick containing the inturned casing; d. advancing a pack rod within the hollow cylindrical forming tube toward said fixed surface thereby compressing the inturned casing against saId fixed surface to form a compressed plug of casing within the bore of the shirred stick; and e. removing said forming tube from the bore of said shirred stick thereby forming an annular space between the extended portion of the plug and the internal wall of the shirred stick.
Claim 7
Dependent Claim
24 words
The method of claim 3 wherein said forming tube is placed flush mounted at the fore end of the shirred stick in step (a).
Claim 8
Dependent Claim
30 words
The method of claim 3 wherein said forming tube is placed such that it is recessed a fixed distance from the fore end of the shirred stick in step (a).
References Cited (Backward Citations)
US3274005A
Cited
US3383222A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-30 | 1978-12-30 | 1979-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-30 | 1982-12-30 | 1983-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-30 | 1986-12-30 | 1987-07-01 | $7700.00 | Window Closed / Lapsed |