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US3685254A Expired / Lapsed US ⏱️ 0.0 years remaining

Machine for automatically feeding,cover applying,sealing,and trimming,filled packages

Assignee: Individual
•
Filing: 1970-09-16
•
Granted: 1972-08-22
•
Expires: 1990-09-16
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Abstract

Abstract The machine receives open top filled packages (such as trays as one example) placed in side by side nests on an endless conveyor, means being operative to move the conveyor in alternate forward and rest movements, under the forward length of a cover sheet, such as sealing plastic, carried by a roll of the sheet. The nests with their packages are moved by the conveyor under a heated sealing plate, at which point the conveyor rests, and the sealing plate is driven downward into contact with the coversheet area above the packages, and the latter is sealed to the packages, as, for example, to the margins thereof. The sealing plate is then withdrawn upwardly and the packages given an upward movement and into contact with a hot wire cut-off which cuts the marginal edges of the sealed covers from the cover sheet. Then the packages are moved by the machine upwardly to a point above a series of delivery rollers, and pushing means move them so that then by gravity they leave the machine. The conveyor thus moves and rests repeatedly to act repeatedly on each side by side nestheld packages along the length of the conveyor, as to the machine elements thus specified.

Inventors

  • 👤 Jonathan E Currier
  • 👤 Donald B Williams

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 18:50
CPC Classifications
B; B65; B65B; B65B7/00; B65B7/16; B65B7/162; B65B7/164

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 185 words
In a machine for automatically feeding, cover applying, sealing, and trimming, filled packages, and which comprises an endless conveyor assembly, means for moving the conveyor in repeated active movements with dwell periods, means for receiving and supporting a cover sheet of heat-sealing character above the conveyor, and a plurality of bottom-apertured package holders equally spaced throughout and supported by the conveyor, of a frame for the aforesaid elemeNts, in combination with a reciprocal hot-sealing plate carried by and above said frame, means for timed reciprocation of said plate in down and upward movements, vertically movable headed push-rod means carried by the frame under and operated after the hot-sealing plate and means for moving the same through the apertured package holders, brought by the conveyor into register therewith, and thereby to carry packages in said holders, with said cover sheet above them, to a raised position, and hot-wire severing means for said cover sheet operative to sever said cover sheet in said raising action of the push-rod means, and thereby freeing the main body of the cover sheet from packages acted upon by said hot-sealing plate.
Claim 2
Dependent Claim 185 words
In a machine for automatically feeding, cover applying, sealing, and trimming, filled packages, and which comprises an endless conveyor assembly, means for moving the conveyor in repeated active movements with dwell periods, means for receiving and supporting a cover sheet of heat-sealing character above the conveyor, and a plurality of bottom-apertured package holders equally spaced throughout and supported by the conveyor, of a frame for the aforesaid elemeNts, in combination with a reciprocal hot-sealing plate carried by and above said frame, means for timed reciprocation of said plate in down and upward movements, vertically movable headed push-rod means carried by the frame under and operated after the hot-sealing plate and means for moving the same through the apertured package holders, brought by the conveyor into register therewith, and thereby to carry packages in said holders, with said cover sheet above them, to a raised position, and hot-wire severing means for said cover sheet operative to sever said cover sheet in said raising action of the push-rod means, and thereby freeing the main body of the cover sheet from packages acted upon by said hot-sealing plate.
Claim 3
Dependent Claim 73 words
A machine for automatically feeding, cover-applying, sealing, and trimming, filled packages, constructed in accordance with claim 1, in which the means for moving the conveyor comprises a reciprocatory drive member having drive action on the conveyor by active movement in one direction, and means for adjusting the length of said active movement consisting of a device movable into limiting stop action for said drive action when said active movement reaches a predetermined degree.
Claim 4
Dependent Claim 63 words
A machine for automatically feeding, cover-applying, sealing, and trimming, filled packages, constructed in accordance with claim 1, in which the conveyor is adapted to hold a succession of side-by-side packages, in combination with a plurality of package-pushers at the discharge end of the machine, and automatic means for operating said pushers, one after another, whereby the packages are discharged one at a time.

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

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