US3685250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cam interrupted sealing jaws for product stripping
Assignee: Kliklok LLC
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Filing: 1970-07-09
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Granted: 1972-08-22
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Expires: 1990-07-09
Abstract
Abstract An arrangement for stripping a packaging tube to remove product from the seal area is provided wherein the stripping plates may be conveniently mounted on the sealing jaws and brought into stripping engagement by single pneumatic cylinder and interrupter cam arrangement. Specifically, a follower roller is carried by the toggle linkage and cylinder that actuates the sealing jaws and said roller engages a stationary cam mounted on the frame of the machine to interrupt the inward movement of the jaws short of sealing engagement; i.e., in the stripping position. After stripping, the follower roller passes over a sloping exit section of the dam for controlled release of the sealing jaws to the sealing and drawing out position. The cam assembly is made of a base member having a central channel for slidably receiving an elongated cam element. The cam element is cushioned by a resilient pad to absorb the shock of the engagement by the follower roller; the cam element being held on the base member by a pin and slot arrangement.
Inventors
- 👤 Nelson R Henry
- 👤 Donald R Middour
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:41
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/80; B29C66/82; B29C66/824; B29C66/8242; B29C65/00; B29C65/02; B29C65/74; B29C65/745; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/4312; B29C66/822; B29C66/8221; B29C66/8225; B29C66/8226; B29C66/82261; B29C66/83; B29C66/834; B29C66/8351; B29C66/83541; B29C66/83543; B29C66/84; B29C66/849; B29C66/8491; B65; B65B; B65B51/00; B65B51/10; B65B51/26; B65B51/30; B65B51/303; B65B9/00; B65B9/10; B65B9/12
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
184 words
In a form and fill packaging system wherein an elongated tube of packaging material is formed, filled, sealed and divided into individual packages, the combination comprising a pair of sealing jaws, actuating means to move said sealing jaws toward and away from said tube passing therebetween to effect sealing, operating means to move said sealing jaws and said tube relative to each other in the direction of the longitudinal axis of said tube to allow drawing of a new length of material to form said packages, means interconnected with said sealing jaws, cam means to intercept said interconnection means moving from a position free of operative engagement with said cam means and substantially in the direction of the inward movement of said sealing jaws toward said tube to thereby interrupt the inward movement of said jaws short of sealing engagement, said cam means extending in the direction of travel of the jaws along the longitudinal axis of said tube, and means for releasing said jaws from said cam means, whereby the jaws may assume sealing engagement and the package may be sealed and formed.
Claim 2
Dependent Claim
184 words
In a form and fill packaging system wherein an elongated tube of packaging material is formed, filled, sealed and divided into individual packages, the combination comprising a pair of sealing jaws, actuating means to move said sealing jaws toward and away from said tube passing therebetween to effect sealing, operating means to move said sealing jaws and said tube relative to each other in the direction of the longitudinal axis of said tube to allow drawing of a new length of material to form said packages, means interconnected with said sealing jaws, cam means to intercept said interconnection means moving from a position free of operative engagement with said cam means and substantially in the direction of the inward movement of said sealing jaws toward said tube to thereby interrupt the inward movement of said jaws short of sealing engagement, said cam means extending in the direction of travel of the jaws along the longitudinal axis of said tube, and means for releasing said jaws from said cam means, whereby the jaws may assume sealing engagement and the package may be sealed and formed.
Claim 3
Dependent Claim
44 words
The combination of claim 1 wherein is further provided a stripper plate on each of said sealing jaws, resilient means for urging said stripper plates toward each other and into flattening engagement with said tube when said jaws are interrupted by said cam means.
Claim 4
Dependent Claim
41 words
The combination of claim 1 wherein said cam means includes an elongated cam element, a base member mounting said cam element, and resilient means mountEd between said cam element and said base member for absorbing the shock resulting from the interruption.
Claim 5
Dependent Claim
68 words
The combination of claim 3 wherein said base member includes a substantially U-shaped channel to receive said cam element between the upstanding legs thereof, a pivot pin extending through one end of said cam element and engaging cooperating elongated holes in the legs of the U-shaped base channel, and said resilient means includes a compressible pad mounted behind said cam element for absorbing the shock of said interruption.
Claim 6
Dependent Claim
33 words
The combination of claim 1 wherein said actuating means for said jaws causes a deceleration of the same when approaching sealing engagement, whereby the shock upon engagement with said cam means is minimized.
Claim 7
Dependent Claim
26 words
The combination of claim 5 wherein said actuating means comprises a toggle linkage connected to said sealing jaws and a fluid cylinder for operating said linkage.
Claim 8
Dependent Claim
35 words
The combination of claim 6 wherein is provided a follower roller on the end of the piston rod of said cylinder, said follower roller being adapted to engage said cam means to cause said interruption.
Claim 9
Dependent Claim
34 words
The combination of claim 7 wherein said toggle linkage is adapted for maximum velocity of the sealing jaws when the same are substantially open and progressively decreasing velocity as the sealing jaws come together.
Claim 10
Dependent Claim
19 words
The combination of claim 6 wherein the fluid cylinder is operated with compressed air to further minimize the shock.
Claim 11
Dependent Claim
39 words
The combination of claim 1 wherein said releasing means includes a sloping exit section on said cam to gradually release said jaws from the interrupted position upon movement of the sealing jaws along the longitudinal axis of said tube.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |