Patent US3798874A successfully refreshed from Google Patents.
US3798874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat sealing machine and method
Assignee: Individual
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Filing: 1972-02-03
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Granted: 1974-03-26
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Expires: 1992-02-03
Abstract
Abstract An apparatus and method are provided for forming containers of flexible plastic film and hermetically sealing articles of clothing and the like therein. In one form, a hanger containing an article of clothing is disposed within a partially formed envelope fed from a roll containing a plurality of tandemly arrayed envelope formations and a further sealing operation is effected to seal both the bottom of the envelope and the upper portion thereof against a hanger which protrudes through an opening therein. The envelope may be formed from a flat tube of flexible thermoplastic material or from two sheets of plastic film which are side sealed and end sealed together after the hanger and article of clothing are disposed therein.
Inventors
- 👤 J Lemelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:39
CPC Classifications
B; B65; B65B; B65B25/00; B65B25/20; B65B9/00; B65B9/10; B65B9/13
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
202 words
An apparatus for sealing an article draped on a clothes hanger within a container comprising in combination: a support, means supported by said support for holding the hook portion of a clothes hanger with the hanger suspended downwardly therefrom, means for supporting two layers of envelope producing plastic sheeting for defining the front and rear walls of an envelope over and around said hanger and an article of clothing held thereby with said sheeting depending sufficiently downwardly from said hanger to extend beyond the end of said article of apparel supported on the hanger, first die sealing means supported by said support, behind a hanger when said hanger is suspended on said hook holding means, second die sealing means supported by said support and operable to engage portions of said layers of envelope producing sheeting and to cooperate with said first sealing means in sealing portions of said layers together to form a closed envelope thereof about said hanger and said article of clothing suspended from said hanger, means for guiding said second sealing means towards said first sealing means to effect the sealing of said sheeting about said hanger and the article supported thereby and to form a closed envelope thereof.
Claim 2
Independent Claim
202 words
An apparatus for sealing an article draped on a clothes hanger within a container comprising in combination: a support, means supported by said support for holding the hook portion of a clothes hanger with the hanger suspended downwardly therefrom, means for supporting two layers of envelope producing plastic sheeting for defining the front and rear walls of an envelope over and around said hanger and an article of clothing held thereby with said sheeting depending sufficiently downwardly from said hanger to extend beyond the end of said article of apparel supported on the hanger, first die sealing means supported by said support, behind a hanger when said hanger is suspended on said hook holding means, second die sealing means supported by said support and operable to engage portions of said layers of envelope producing sheeting and to cooperate with said first sealing means in sealing portions of said layers together to form a closed envelope thereof about said hanger and said article of clothing suspended from said hanger, means for guiding said second sealing means towards said first sealing means to effect the sealing of said sheeting about said hanger and the article supported thereby and to form a closed envelope thereof.
Claim 3
Dependent Claim
34 words
An apparatus in accordance with claim 1 wherein said first and second sealing means are shaped and operable to seal the walls of the envelope up to the neck of the hook portion thereof.
Claim 4
Dependent Claim
38 words
An apparatus in accordance with claim 2 wherein said first sealing means is shaped and operable to also effect a seal between the front and rear walls of the envelope and a portion of a hanger extending therebetween.
Claim 5
Dependent Claim
27 words
An apparatus in accordance with claim 3 wherein said first sealing means is operable to effect a sealing closure completely across the upper end of the envelope.
Claim 6
Dependent Claim
42 words
An apparatus in accordance with claim 1 wherein said first and second sealing means includes a sealing bar operable to effect a line seal laterally across the bottom of said two layers of plastic sheeting to close the bottom of said envelope.
Claim 7
Dependent Claim
37 words
An apparatus in accordance with claim 5 wherein said sealing bar is adjustable in location to permit the position of said line seal to be varied so as to vary the length of the envelope formed thereby.
Claim 8
Dependent Claim
74 words
An apparatus in accordance with claim 1, wherein said first sealing means is fixed with respect to said support and said second sealing means is movable on said support towards and away from said first sealing means so as to permit it to engage said plastic sheeting against said first sealing means in the act of sealing same and to release same to permit removal of said envelope and its contents from said support.
Claim 9
Dependent Claim
28 words
An apparatus in accordance with claim 7 wherein said second sealing means is pivotally mounted on said support and swingable towards and away from said first sealing means.
Claim 10
Dependent Claim
28 words
An apparatus in accordance with claim 7 including means for guiding said second sealing means lineally towards and away from said support to engage said first sealing means.
Claim 11
Dependent Claim
25 words
An apparaus in accordance with claim 9 including power operating means for moving said second sealing means towards and away from said first sealing means.
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) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |