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US3695280A Expired / Lapsed US ⏱️ 0.0 years remaining

Contact lens case

Assignee: Barnes Hind Pharmaceuticals Inc
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Filing: 1971-01-15
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Granted: 1972-10-03
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Expires: 1991-01-15
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Abstract

Abstract A contact lens case made of a soft plastic is described having a reservoir therein so that the lenses can be kept immersed in a soaking solution. A simple two piece structure is provided which is easily made by injection molding and an abutment means is provided between the top and bottom of the case to prevent collapse of the case.

Inventors

  • 👤 Robert G Sturgeon

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 19:45
CPC Classifications
A; A45; A45C; A45C11/00; A45C11/005; Y; Y10; Y10S; Y10S134/00; Y10S134/901

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 287 words
A contact lens case for carrying contact lenses immersed in a soaking solution, comprising a housing having a cup-shaped bottom, said bottom including a bottom wall and a peripheral, upstanding side wall, a top including a top plate and a depending annular side wall on the bottom surface thereof, said depending annular side wall spaced inwardly from the marginal edge of said top plate and engaged at its outer surface with the inner surface of said upstanding side wall, cooperating annular rib and groove means on the confronting surfaces of said side walls effecting a sealed snap fit therebetween, said top and bottom defining a reservoir for liquid therebetween, a pair of contact lens receiving cups in said top plate in side-by-side relationship to one another, each said cup including a perforated bottom extending downwardly below the top plate and into said reservoir and an annular raised wall extending above the top plate, a pair of caps integrally joined to said top by a pair of flexible straps integrally connected at opposite ends to the top and to the caps, respectively, said straps each having a weakened portion therein to facilitate flexure thereof and positioning of said caps over said upstanding walls of said contact lens receiving cups to close said cups, cooperating annular rib and groove means on said raised walls and said caps effecting a sealed snap fit therebetween, and abutment means integral with said top plate on the underside thereof between said contact lens receiving cups and projecting downwardly toward said bottom wall and in juxtaposition therewith to engage the bottom wall and prevent deflection of said top plate toward said bottom wall when pressure is exerted on said top plate or bottom wall.
Claim 2
Dependent Claim 287 words
A contact lens case for carrying contact lenses immersed in a soaking solution, comprising a housing having a cup-shaped bottom, said bottom including a bottom wall and a peripheral, upstanding side wall, a top including a top plate and a depending annular side wall on the bottom surface thereof, said depending annular side wall spaced inwardly from the marginal edge of said top plate and engaged at its outer surface with the inner surface of said upstanding side wall, cooperating annular rib and groove means on the confronting surfaces of said side walls effecting a sealed snap fit therebetween, said top and bottom defining a reservoir for liquid therebetween, a pair of contact lens receiving cups in said top plate in side-by-side relationship to one another, each said cup including a perforated bottom extending downwardly below the top plate and into said reservoir and an annular raised wall extending above the top plate, a pair of caps integrally joined to said top by a pair of flexible straps integrally connected at opposite ends to the top and to the caps, respectively, said straps each having a weakened portion therein to facilitate flexure thereof and positioning of said caps over said upstanding walls of said contact lens receiving cups to close said cups, cooperating annular rib and groove means on said raised walls and said caps effecting a sealed snap fit therebetween, and abutment means integral with said top plate on the underside thereof between said contact lens receiving cups and projecting downwardly toward said bottom wall and in juxtaposition therewith to engage the bottom wall and prevent deflection of said top plate toward said bottom wall when pressure is exerted on said top plate or bottom wall.
Claim 3
Dependent Claim 23 words
A contact lens case as in claim 1, wherein said abutment means comprises a central post on the underside of said top plate.
Claim 4
Dependent Claim 18 words
A contact lens case as in claim 2, wherein said case is made of a soft plastic material.
Claim 5
Dependent Claim 47 words
A contact lens case as in claim 3, wherein said annular ribs are on the outer circumference or surface of said raised walls and said depending side wall, and said annular grooves are in the caps and the inner circumference or surface of said upstanding side wall.

References Cited (Backward Citations)

GB1130853A Cited
US3268068A Cited
US3394717A Cited
US3460552A Cited
US3536082A Cited
US3586012A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-10-03 1976-04-03 1976-10-03 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-10-03 1980-04-03 1980-10-03 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-10-03 1984-04-03 1984-10-03 $7700.00 Window Closed / Lapsed

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