Patent US4773108A successfully refreshed from Google Patents.
US4773108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for securing and maintaining bed covers
Assignee: WATERBED CORNERS Inc
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Filing: 1987-06-09
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Granted: 1988-09-27
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Expires: 2007-06-09
Abstract
Abstract A corner retainer for securing and maintaining bed covers on the mattress of a bed formed by first, second and third planar portions which intersect each other at substantially right angles and which meet at a point to form a trihedral corner. The corner retainer is positionable at the corner of the mattress and when bed covers are placed thereover wedge the bed covers between the retainer and a surrounding portion of the bed.
Inventors
- 👤 Thomas P. Leever
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:51
CPC Classifications
A; A47; A47C; A47C21/00; A47C21/02; A47C21/022; Y; Y10; Y10T; Y10T24/00; Y10T24/23
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
164 words
Means for securing and maintaining bed covers on the mattress of a bed, said means comprising at least one corner retainer formed by first, second and third planar portions which intersect each other at substantially right angles and which meet at a point forming a first trihedral corner and a fourth planar portion spaced above and parallel to said first planar portion also intersecting said second and third planar portion at substantially right angles thereto and meeting at a point to form a second trihedral corner above said first trihedral corner, said corner retainer being positionable at the corner of said mattress, said first planar portion being insertable under said mattress, said fourth planar portion being positionable on top of said mattress and said second and third planar portions extending at right angles from each other, one along a longitudinal edge of said mattress and the other along a transverse edge of said mattress, to secure and maintain bed covers placed on said mattress.
Claim 2
Dependent Claim
164 words
Means for securing and maintaining bed covers on the mattress of a bed, said means comprising at least one corner retainer formed by first, second and third planar portions which intersect each other at substantially right angles and which meet at a point forming a first trihedral corner and a fourth planar portion spaced above and parallel to said first planar portion also intersecting said second and third planar portion at substantially right angles thereto and meeting at a point to form a second trihedral corner above said first trihedral corner, said corner retainer being positionable at the corner of said mattress, said first planar portion being insertable under said mattress, said fourth planar portion being positionable on top of said mattress and said second and third planar portions extending at right angles from each other, one along a longitudinal edge of said mattress and the other along a transverse edge of said mattress, to secure and maintain bed covers placed on said mattress.
Claim 3
Dependent Claim
34 words
The bed covers securing and maintaining means of claim 1 in which said fourth planar portion is spaced above said first planar portion by a distance approximately equal to the thickness of said mattress.
Claim 4
Dependent Claim
39 words
The bed covers securing and maintaining means of claim 2 in which said first planar portion extends away from said first trihedral corner for a greater distance than said fourth planar portion extends away from said second trihedral corner.
Claim 5
Dependent Claim
56 words
The bed covers securing and maintaining means of claim 2 in which said fourth planar portion is substantially triangular in shape and in which an aperture is provided near the edge thereof fartherest from said second trihedral corner providing means by which said corner retainer may be positioned at the corner of said mattress by hand.
Claim 6
Dependent Claim
39 words
The bed covers securing and maintaining means of claim 1 in which a piece of interengaging fabric is attached to a surface of said first planar portion for engagement with corresponding interengaging fabric of a mattress of the like.
Claim 7
Dependent Claim
21 words
The bed covers securing and maintaining means of claim 1 in which said first and second trihedral corners are slightly rounded.
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) | 1991-09-27 | 1992-03-28 | 1992-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-27 | 1996-03-28 | 1996-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-27 | 2000-03-28 | 2000-09-27 | $7700.00 | Window Closed / Lapsed |