Patent US5632473A successfully refreshed from Google Patents.
US5632473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastic spring and spring support for mattress, chair or upholstery
Assignee: Individual
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Filing: 1993-09-29
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Granted: 1997-05-27
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Expires: 2013-09-29
Abstract
Abstract An elastic framework for a mattress, chair, upholstery, etc. is disclosed which includes elastic springs made of opposing upper and lower elastic elements, each elastic element having a base portion and a plurality of flexible arms which extend from the base portion and are joined to the flexible arms of the opposing upper or lower element so as to form a closed flexible ring. These flexible rings are joined to top support elements and bottom support elements at the base portion of the upper and lower elastic elements, respectively, and the top support elements as well as the bottom supported elements are respectively interconnected so as to form a spring support.
Inventors
- 👤 Joao Dias Magalhaes Queiroz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:28
CPC Classifications
F; F16; F16F; F16F3/00; F16F3/02; F16F3/023; A; A47; A47C; A47C23/00; A47C23/002; A47C23/02; A47C27/00; A47C27/04; A47C27/06; A47C27/065; F16F3/08; F16F3/10; F16F3/12
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
85 words
An elastic spring, comprising: upper and lower elastic elements, each made of plastic and including a base portion integral with two flexible arms, said arms varying in width and thickness along their length and extending in opposite directions to form an arch with flattened ends; and connecting means for connecting each flexible arm of said upper elastic element to a respective flexible arm of said lower elastic element at said flattened ends so as to form two opposed arches having flattened ends that are connected.
Claim 2
Dependent Claim
85 words
An elastic spring, comprising: upper and lower elastic elements, each made of plastic and including a base portion integral with two flexible arms, said arms varying in width and thickness along their length and extending in opposite directions to form an arch with flattened ends; and connecting means for connecting each flexible arm of said upper elastic element to a respective flexible arm of said lower elastic element at said flattened ends so as to form two opposed arches having flattened ends that are connected.
Claim 3
Dependent Claim
52 words
The elastic spring according to claim 1 and further comprising an additional one or more identical elastic springs positioned so that the base of each elastic spring is aligned on a single common axis, with the arms of each elastic spring extending in different azimuthal directions, to thereby form a combination spring.
Claim 4
Dependent Claim
24 words
The combination spring according to claim 2, wherein there is further provided a stopper to limit the maximum compression of the combination elastic spring.
Claim 5
Dependent Claim
150 words
A spring support comprising: a plurality of springs, each including upper and lower elastic elements, each elastic element made of plastic and including a base portion integral with two flexible arms, said arms varying in width and thickness along their length and extending in opposite directions from the base portion to form an arch with flattened ends; and connecting means for connecting each flexible arm of said upper elastic element to a respective flexible arm of said lower elastic element at said flattened ends so as to form two opposed arches having flattened ends that are connected; a plurality of top support elements; a plurality of bottom support elements; each of said springs being connected to one of said plurality of top support elements and to one of said bottom support elements; and interconnecting means for connecting said top support elements together and for connecting said bottom support elements together.
Claim 6
Dependent Claim
150 words
A spring support comprising: a plurality of springs, each including upper and lower elastic elements, each elastic element made of plastic and including a base portion integral with two flexible arms, said arms varying in width and thickness along their length and extending in opposite directions from the base portion to form an arch with flattened ends; and connecting means for connecting each flexible arm of said upper elastic element to a respective flexible arm of said lower elastic element at said flattened ends so as to form two opposed arches having flattened ends that are connected; a plurality of top support elements; a plurality of bottom support elements; each of said springs being connected to one of said plurality of top support elements and to one of said bottom support elements; and interconnecting means for connecting said top support elements together and for connecting said bottom support elements together.
Claim 7
Dependent Claim
29 words
The spring support according to claim 4, and further comprising holes in either said top or said bottom support elements to thereby reduce the weight of said support elements.
Claim 8
Dependent Claim
40 words
The spring support according to claim 4 and further comprising bracing means for connecting said top support elements to said bottom support elements so as to prevent a sideways motion between said top support elements and said bottom support elements.
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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) | 2000-05-26 | 2000-11-25 | 2001-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-05-26 | 2004-11-25 | 2005-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-05-26 | 2008-11-25 | 2009-05-27 | $7700.00 | Window Closed / Lapsed |