Patent US2539419A successfully refreshed from Google Patents.
US4336680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stainless steel transport band
Assignee: Doboy Packaging Machinery Inc
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Filing: 1980-01-04
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Granted: 1982-06-29
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Expires: 2000-01-04
Abstract
Abstract A plastic film carrier for a vacuum packaging machine comprising a continuous stainless steel band with clips thereon for securing the edges of the web of plastic film onto the face of the band, the band having openings therein receiving sprocket teeth to lift the clips out of clamping relation with the film.
Inventors
- 👤 John J. Grevich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:58
CPC Classifications
B; B65; B65H; B65H20/00; B65H20/16; B65B; B65B41/00; B65B41/12; B65B41/14; B65H20/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
195 words
In a machine for packaging items of goods, means for supplying a web of plastic film into the machine and carrier means for gripping and horizontally conveying the web of plastic film for carrying the items thereon, the carrier means including an elongate endless steel band with a top run to support the web of plastic film being conveyed, the band having a multiplicity of clips thereon releasably gripping the edge of the web of plastic film and carrying the film with the band through the machine, each of the clips having a jaw confronting and bearing against the steel band to clamp the film onto the band, and the band having a multiplicity of apertures therethrough each adjacent a respective clip, a sprocket wheel at one end of the top run of the endless band and mounting the band for travel as the sprocket is revolved, the sprocket having a plurality of protrusions each projecting through a respective aperture of the band and bearing against the clip and urging the clip away from the band to open the jaw and allow movement of the web of plastic film between the jaw and the band.
Claim 2
Dependent Claim
195 words
In a machine for packaging items of goods, means for supplying a web of plastic film into the machine and carrier means for gripping and horizontally conveying the web of plastic film for carrying the items thereon, the carrier means including an elongate endless steel band with a top run to support the web of plastic film being conveyed, the band having a multiplicity of clips thereon releasably gripping the edge of the web of plastic film and carrying the film with the band through the machine, each of the clips having a jaw confronting and bearing against the steel band to clamp the film onto the band, and the band having a multiplicity of apertures therethrough each adjacent a respective clip, a sprocket wheel at one end of the top run of the endless band and mounting the band for travel as the sprocket is revolved, the sprocket having a plurality of protrusions each projecting through a respective aperture of the band and bearing against the clip and urging the clip away from the band to open the jaw and allow movement of the web of plastic film between the jaw and the band.
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) | 1985-06-28 | 1985-12-28 | 1986-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-28 | 1989-12-28 | 1990-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-28 | 1993-12-28 | 1994-06-29 | $7700.00 | Window Closed / Lapsed |