US3702491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring hinge device
Assignee: Illinois Tool Works Inc
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Filing: 1970-07-10
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Granted: 1972-11-14
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Expires: 1990-07-10
Abstract
Abstract The present invention relates generally to spring hinge devices and more particularly to improvements in spring hinge devices for use with a top opening cabinet having a tiltable lid such as a freezer cabinet. One practical embodiment of the invention disclosed in the present application includes a bracket member attachable to the vertical wall of a cabinet and a second bracket member attachable to the fixed margin of a tiltable cabinet lid. Spring coupling elements fixed to said brackets are designed to detachably accommodate opposite extremities of a substantially horizontal coil spring, said spring serving to counterbalance the weight of the cabinet lid.
Inventors
- 👤 Thomas James Pelletiere
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:55
CPC Classifications
E; E05; E05F; E05F1/00; E05F1/08; E05F1/10; E05F1/12; E05F1/1207; E05F1/1215; E05Y; E05Y2900/00; E05Y2900/30; E05Y2900/306; F; F25; F25D; F25D2323/00; F25D2323/02; F25D2323/024; F25D2400/00; F25D2400/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
201 words
A spring hinge device for an open top type cabinet having a lid tiltable between substantially horizontal and substantially vertical positions, including first bracket means attachable to a vertical wall of a cabinet, first spring coupling means fixed to said first bracket means, second bracket means horizontally spaced from said first bracket means and attachable to the hinge margin of a tiltable cabinet lid, second spring coupling means fixed to said second bracket means, a substantially horizontally disposed coil spring coaxially interposed between and detachably connected with said first and second spring coupling means, bearing means for attachment to said tiltable cabinet lid interiorly thereof and for movement therewith, said bearing means surrounding a portion of said first spring coupling means so as to provide a pivotal support for said lid when attached thereto in assembled relation, said bearing means and said first spring coupling means including abutment surfaces engageable to limit the extent to which said tiltable cabinet lid may be tilted upwardly, and said first coupling means being rotatably adjustable with respect to said second coupling means for prestressing said coil spring to counterbalance the weight of an associated cabinet lid, whereby to assist manual opening of the lid.
Claim 2
Dependent Claim
201 words
A spring hinge device for an open top type cabinet having a lid tiltable between substantially horizontal and substantially vertical positions, including first bracket means attachable to a vertical wall of a cabinet, first spring coupling means fixed to said first bracket means, second bracket means horizontally spaced from said first bracket means and attachable to the hinge margin of a tiltable cabinet lid, second spring coupling means fixed to said second bracket means, a substantially horizontally disposed coil spring coaxially interposed between and detachably connected with said first and second spring coupling means, bearing means for attachment to said tiltable cabinet lid interiorly thereof and for movement therewith, said bearing means surrounding a portion of said first spring coupling means so as to provide a pivotal support for said lid when attached thereto in assembled relation, said bearing means and said first spring coupling means including abutment surfaces engageable to limit the extent to which said tiltable cabinet lid may be tilted upwardly, and said first coupling means being rotatably adjustable with respect to said second coupling means for prestressing said coil spring to counterbalance the weight of an associated cabinet lid, whereby to assist manual opening of the lid.
Claim 3
Dependent Claim
39 words
A spring hinge device for an open top type cabinet having a tiltable lid as set forth in claim 1, wherein said first and second coupling means are provided with recesses for detachably accommodating extremities of the coil spring.
Claim 4
Dependent Claim
57 words
A spring hinge device for an open top type cabinet having a tiltable lid as set forth in claim 1, wherein opposite extremities of the coil spring present tangs extending transversely of a circle defined by the periphery of the coil spring, and each of the coupling means is recessed to detachably accommodate one of said tangs.
Claim 5
Dependent Claim
33 words
A spring hinge device for an open top type cabinet having a tiltable lid as set forth in claim 1, wherein said bearing means is in the form of an integral plastic unit.
Claim 6
Dependent Claim
55 words
A spring hinge device for an open top type cabinet having a tiltable lid as set forth in claim 1, wherein said bearing means is non-circular in shape for reception in a correspondingly shaped aperture of an associated cabinet lid, whereby to prevent relative rotation of said bearing means with respect to an associated lid.
References Cited (Backward Citations)
US1380587A
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US2078303A
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US2547550A
Cited
US2839779A
Cited
US2960296A
Cited
FR1440709A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-14 | 1976-05-15 | 1976-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-14 | 1980-05-15 | 1980-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-14 | 1984-05-15 | 1984-11-14 | $7700.00 | Window Closed / Lapsed |