US3595456A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for facilitating the dispensing of heat-severable film
Assignee: Rosenthal Manufacturing Co Inc
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Filing: 1969-08-04
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Granted: 1971-07-27
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Expires: 1989-08-04
Abstract
Abstract Heat-severable film-dispensing apparatus which is located underneath a surface on which items are wrapped in the film and which includes rollers for supporting a replaceable film supply roll and a switching mechanism coupled with the film to cause a film-severing wire to be heated when the film is laid out across the wrapping surface. The apparatus also includes a brake for preventing the feed-off of film and a control device for raising a wire guard which are operated in response to the actuation of a switch bar so that the film can be severed by the heated wire.
Inventors
- 👤 Ben J Rosenthal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:23
CPC Classifications
B; B65; B65H; B65H35/00; B65H35/0006; B65H35/0073; Y; Y10; Y10T; Y10T225/00; Y10T225/20; Y10T225/205; Y10T225/206; Y10T225/207; Y10T225/215; Y10T225/216; Y10T225/298; Y10T83/00; Y10T83/283; Y10T83/293
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
253 words
Apparatus for dispensing and cutting heat-severable film from a replaceable supply roll, such apparatus including in combination, roller means supporting the supply roll and allowing the supply roll to rotate thus feeding off the film, brake means having a portion engaging the film, electrical heating wire positioned to transversely extend above the film for severing the film when engaged thereby, heating circuit connected to said wire and selectively delivering electrical power thereto thus heating said wire, said heating circuit having first switch means operable to connect and disconnect electrical power to and from said wire, first pivotal member for guiding the film and coupled to said first switch means for closing the same when the film is in a predetermined position to thereby supply electrical power to heat said wire, second pivotal member having a guard holding the film away from said wire, control means connected to said second pivotal member and operable to move said second pivotal member thereby displacing said guard to allow the film to come in contact with said wire thus severing the film, electromechanical means connected to said brake means and to said control means, and second manually operated switch means electrically coupled to said electromechanical means and being operative to supply an electrical potential thereto, said electromechanical means operating said brake means and said control device in response to said operation of said second manually operated switch means, said first pivotal member being rotatable to open said first switch means in response to the film being severed.
Claim 2
Dependent Claim
253 words
Apparatus for dispensing and cutting heat-severable film from a replaceable supply roll, such apparatus including in combination, roller means supporting the supply roll and allowing the supply roll to rotate thus feeding off the film, brake means having a portion engaging the film, electrical heating wire positioned to transversely extend above the film for severing the film when engaged thereby, heating circuit connected to said wire and selectively delivering electrical power thereto thus heating said wire, said heating circuit having first switch means operable to connect and disconnect electrical power to and from said wire, first pivotal member for guiding the film and coupled to said first switch means for closing the same when the film is in a predetermined position to thereby supply electrical power to heat said wire, second pivotal member having a guard holding the film away from said wire, control means connected to said second pivotal member and operable to move said second pivotal member thereby displacing said guard to allow the film to come in contact with said wire thus severing the film, electromechanical means connected to said brake means and to said control means, and second manually operated switch means electrically coupled to said electromechanical means and being operative to supply an electrical potential thereto, said electromechanical means operating said brake means and said control device in response to said operation of said second manually operated switch means, said first pivotal member being rotatable to open said first switch means in response to the film being severed.
Claim 3
Dependent Claim
96 words
The apparatus of claim 1 wherein said first pivotal member is physically located above said first switch means, said first switch means being normally closed and responsive to the force of the weight of said first pivotal member thereon to open, said first pivotal member further having two guide bars through which the film is inserted and being held above said first switch means by the film in its said predetermined position such that the severing of the film allows said pivotal means to rotate down to open said first switch means thereby deenergizing said wire.
Claim 4
Dependent Claim
56 words
The apparatus of claim 2 further including magnet means located in a spaced relation to said first pivotal member and said first switch means such that said first pivotal member is restricted from bouncing up and down on said switch means as said first pivotal member rotates down as a result of the film being severed.
Claim 5
Dependent Claim
15 words
The apparatus of claim 1 wherein said film material is made from a polyethylene substance.
Claim 6
Dependent Claim
155 words
The apparatus of claim 1 wherein said brake means is comprised of first and second members of circular cross section having longitudinal axes parallel to each other and to the axis of the roll of film material, said first and second members being arranged in fixed spaced relation to each other so that as a result of the film being inserted therebetween there is frictional coupling between the film and said first and second members, said first member being rotatable and having a circular disc integral therewith with teeth on its periphery, shaft means arranged so that it can be slid into engagement with said teeth, said electromagnetic means being connected with said shaft means and responsive to the electrical potential supplied By the closure of said second switch means to engage said shaft means with said teeth thereby locking said first member to prevent the passage of film between said first and second members.
Claim 7
Dependent Claim
64 words
The apparatus of claim 1 wherein said second switch means is comprised of two pushbutton-operated microswitches electrically connected in parallel, bar means with each end thereof in abutting contact with the pushbutton of one of said microswitches, at least one of said microswitches being operable in response to a predetermined pressure anywhere along said bar to provide said electrical potential to said electromechanical means.
Claim 8
Dependent Claim
48 words
The apparatus of claim 1 wherein at least one of said roller means has collars located thereon for holding and locating the supply roll of film, and wherein said collars are axially movable along said roller means thereby being adaptable to hold and locate rolls having different lengths.
Claim 9
Dependent Claim
68 words
The apparatus of claim 1, further including third switch means which is normally closed, said third switch means being connected in said heating circuit and being operable to deenergize said wire when opened, and means on said wire engaging said third switch means to open the same upon a given expansion of said wire due to heating thereof thus selectively deenergizing said wire to regulate the temperature thereof.
Claim 10
Dependent Claim
91 words
The apparatus of claim 1 wherein said control means includes toggle linkage having at least first and second legs and a coil spring, said first leg being connected to said electromechanical means and to said second leg, said second leg being connected to said second pivotal member and said spring being coiled around said first leg so that when said electromechanical means is energized said second pivotal member is raised and said spring is compressed and when said solenoid is deenergized said spring causes said second pivotal member to be lowered.
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) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |