Patent US3727870A successfully refreshed from Google Patents.
US3727870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resilient support
Assignee: Individual
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Filing: 1971-05-10
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Granted: 1973-04-17
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Expires: 1991-05-10
Abstract
Abstract A base of resilient (polymeric or metallic) sheet material carries a multiplicity of cup-shaped projections of polygonal outline formed in one piece therewith, each projection having a generally prismatic shape with slits along their longitudinal edges enabling individual deformation of its several sides under pressure acting upon the bottom of the cup. The coplanar cup bottoms may support a load parallel to the base or may collectively act as a bumper or shock absorber. The mutual separation of the undeformed projections is substantially less than their height so that, in response to a predetermined loading stress, their outwardly bulging sides contact one another and prevent further depression of the cup bottoms toward the base.
Inventors
- 👤 R Bass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:24
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/36; A; A47; A47G; A47G29/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149; Y10T428/24165; Y10T428/24628; Y10T428/24669; Y10T428/24678
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
147 words
A resilient pressure-absorbing unit comprising a base and a multiplicity of bumper elements of resilient sheet material rising from said base, each of said elements having a central portion spaced from said base and a plurality of spider legs integral with said central portion anchored to said base, said spider legs being arrayed about an axis and being outwardly deformable in different axial planes under a load pressure acting upon said central portion in the direction of said base, the central portions of all said elements normally lying substantially in a common plane parallel to said base, said elements being substantially equispaced by a distance shorter than the height of said spider legs, the legs of neighboring elements being bisected by a common axial plane and spaced apart in the unloaded condition for mutual contact upon outward deformation thereof in response to a predetermined minimum load pressure.
Claim 2
Dependent Claim
147 words
A resilient pressure-absorbing unit comprising a base and a multiplicity of bumper elements of resilient sheet material rising from said base, each of said elements having a central portion spaced from said base and a plurality of spider legs integral with said central portion anchored to said base, said spider legs being arrayed about an axis and being outwardly deformable in different axial planes under a load pressure acting upon said central portion in the direction of said base, the central portions of all said elements normally lying substantially in a common plane parallel to said base, said elements being substantially equispaced by a distance shorter than the height of said spider legs, the legs of neighboring elements being bisected by a common axial plane and spaced apart in the unloaded condition for mutual contact upon outward deformation thereof in response to a predetermined minimum load pressure.
Claim 3
Dependent Claim
27 words
A unit as defined in claim 1 wherein said central portions have a generally polygonal outline, with a spider leg extending from each side of the polygon.
Claim 4
Dependent Claim
38 words
A unit as defined in claim 2 wherein the legs of each element are closely spaced, thereby forming a generally cup-shaped structure with a concave side facing said base, said central portions constituting the bottoms of the cups.
Claim 5
Dependent Claim
20 words
A unit as defined in claim 3 wherein said structure is substantially prismatic in the undeformed state of its legs.
Claim 6
Dependent Claim
21 words
A unit as defined in claim 3 wherein said central portions are squares, said elements forming orthogonally intersecting rows and files.
Claim 7
Dependent Claim
34 words
A unit as defined in claim 3 wherein said elements are unitary with said base, the latter having generally polygonal cutouts with edges merging into the spider legs of associated structures spanning said cutouts.
Claim 8
Dependent Claim
16 words
A unit as defined in claim 6 wherein said spider legs are faired into said base.
Claim 9
Dependent Claim
39 words
A unit as defined in claim 1 wherein said base is provided with an upstanding frame spaced from the outermost elements by substantially half said distance for engagement thereby upon deformation of their legs under said minimum load pressure.
Claim 10
Dependent Claim
19 words
A unit as defined in claim 8 wherein said frame rises to substantially half the height of said elements.
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) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |