US3847712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bag sealing apparatus
Assignee: Dazey Products Co
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Filing: 1972-08-14
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Granted: 1974-11-12
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Expires: 1992-08-14
Abstract
Abstract A bag sealer is provided for sealing plastic bags or the like, such as are used for sandwiches or other food items, and which are either of the conventional single-ply polyethylene type or are the so-called ''''boilable'''' two-ply bags which are comprised of an inner polyethylene layer and an outer Mylar layer. An elongated, rotatable and heat-conductive member having an electrical heating element and a pair of differently configured, bag-engaging surfaces is adapted to be selectively positioned to present either of the surfaces in a disposition for engaging the bag adjacent its open end and sealing the same by virtue of a cooperating pressure plate which is shifted toward the member to press the bag firmly against the hot sealing surface. One of the surfaces includes a planar, bag-engaging face which presents a relatively large area of engagement with the bag and is particularly suited for use with the two-ply ''''boilable'''' bags. A second surface of the member is provided with an elongated knifeedge that is ideally suited for sealing the open end of a conventional single-ply polyethylene bag and simultaneously trimming the latter as it is being sealed.
Inventors
- 👤 R Hubbard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:37
CPC Classifications
B; B65; B65B; B65B51/00; B65B51/10; B65B51/14; B65B51/148; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C65/24; B29C65/30; B29C65/305; B29C65/74; B29C65/743; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/4312; B29C66/43121; B29C66/70; B29C66/72; B29C66/723; B29C66/80; B29C66/81; B29C66/812; B29C66/8122; B29C66/814; B29C66/8141; B29C66/81427; B29C66/82; B29C66/822; B29C66/8221; B29C66/83; B29C66/832; B29C66/8324; B29C66/84; B29C66/861; B29C65/22; B29C65/221; B29C65/222; B29C66/71; B29L; B29L2031/00; B29L2031/712; B29L2031/7128; Y; Y10; Y10T; Y10T156/00; Y10T156/12; Y10T156/1313
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
169 words
Apparatus for sealing the open end of plastic bags or the like, comprising: a base; an elongate member of heat-conductive material having a pair of differently configured surfaces, each of said surfaces being of length and configuration for continuous and uninterrupted spanning engagement with one side of a plastic bag or the like adjacent the open end thereof; means rotatably mounting said member on said base for selective positioning of either of said surfaces in a disposition permitting said continuous, uninterrupted spanning engagement with said bag or the like; means for heating said surfaces along the entire length thereof; elongate pressure means of length at least that of said surfaces and shiftably mounted on said base for movement toward and away from the latter, said pressure means having a bagengaging surface of generally planar configuration for continuous, uninterrupted spanning engagement with the other side of said bag or the like, oppositely to the zone of engagement between the latter and a selected one of said surfaces of said member.
Claim 2
Dependent Claim
169 words
Apparatus for sealing the open end of plastic bags or the like, comprising: a base; an elongate member of heat-conductive material having a pair of differently configured surfaces, each of said surfaces being of length and configuration for continuous and uninterrupted spanning engagement with one side of a plastic bag or the like adjacent the open end thereof; means rotatably mounting said member on said base for selective positioning of either of said surfaces in a disposition permitting said continuous, uninterrupted spanning engagement with said bag or the like; means for heating said surfaces along the entire length thereof; elongate pressure means of length at least that of said surfaces and shiftably mounted on said base for movement toward and away from the latter, said pressure means having a bagengaging surface of generally planar configuration for continuous, uninterrupted spanning engagement with the other side of said bag or the like, oppositely to the zone of engagement between the latter and a selected one of said surfaces of said member.
Claim 3
Dependent Claim
38 words
Apparatus as claimed in claim 1, wherein there is provided means for holding said member against rotation during the time that said pressure means is in engagement with said other side of the plastic bag or the like.
Claim 4
Dependent Claim
27 words
Apparatus as claimed in claim 1, wherein said member is provided with a longitudinal groove, said heating means including an electrical heating element disposed in said groove.
Claim 5
Dependent Claim
16 words
Apparatus as claimed in claim 3, wherein said surfaces include a surface having a planar face.
Claim 6
Dependent Claim
22 words
Apparatus as claimed in claim 4, wherein said groove is in said last-mentioned surface to present a pair of spaced, planar faces.
Claim 7
Dependent Claim
28 words
Apparatus as claimed in claim 3, wherein said surfaces include a surface having an elongated knife-edge for trimming a bag or the like as the same is sealed.
Claim 8
Dependent Claim
34 words
Apparatus as claimed in claim 6, wherein said groove is below and in spaced relationship to said knife-edge when the latter is in a position to engage a bag or the like for sealing.
Claim 9
Dependent Claim
15 words
Apparatus as claimed in claim 7, wherein said surfaces are angularly displaced from each other.
Claim 10
Dependent Claim
40 words
Apparatus as claimed in claim 3, wherein said groove is in a first of said surfaces, and said element is disposed to engage said one side of the bag when the latter is placed on said first surface for sealing.
Claim 11
Dependent Claim
14 words
Apparatus as claimed in claim 9, wherein said element includes a silicone rubber cover.
Claim 12
Dependent Claim
71 words
Apparatus as claimed in claim 1, wherein a first of said surfaces presents a substantially greater area of engagement with said one side of a plastic bag or the like than does a second of said surfaces, said first sUrface being utilized for the sealing of bags or the like having multiple ply sides while said second surface is utilized for the sealing of bags or the like having single-ply sides.
Claim 13
Dependent Claim
49 words
Apparatus as claimed in claim 11, wherein said pressure means includes an elongated pad having an area of engagement with said other side of a plastic bag or the like and which is at least equal to the area of engagement of said first surface with said one side.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |