Patent US4539723A successfully refreshed from Google Patents.
US4539723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Auxiliary mattress corners
Assignee: Individual
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Filing: 1984-05-29
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Granted: 1985-09-10
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Expires: 2004-05-29
Abstract
Abstract This invention relates to an accessory article for those liquid filled bed mattresses that are commonly marketed as "Waterbeds" and/or "Water Beds". Installation to said type beds provides a rigid "auxiliary mattress corner" to which mattress cover and fitted sheet may be attached to remain securely and snugly fitted to said mattresses in normal daily usage. This invention may also be attached to conventionally constructed mattress, that is, fiber/spring and/or polymerics for the same purpose and result as with said type liquid filled mattresses.
Inventors
- 👤 Jerl D. Hillsberry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:49
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/08; A47C27/085; Y; Y10; Y10T; Y10T24/00; Y10T24/23
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
61 words
A method for attaching and securing fitted sheets or mattress covers to liquid filled bed mattresses or conventional bed mattresses accomplished by: a. Placement of a rigid corner forming device beneath and in abutment with each of the side walls of said mattress corners; b. Securing the corner portions of said fitted sheets or covers respectively around said corner forming devices.
Claim 2
Independent Claim
61 words
A method for attaching and securing fitted sheets or mattress covers to liquid filled bed mattresses or conventional bed mattresses accomplished by: a. Placement of a rigid corner forming device beneath and in abutment with each of the side walls of said mattress corners; b. Securing the corner portions of said fitted sheets or covers respectively around said corner forming devices.
Claim 3
Dependent Claim
143 words
A rigid corner forming device for a corner of a soft deformable mattress on a bed frame comprising: a rigid horizontal wall insertable between the mattress corner and the bed frame; the outer perimeter portions of said bottom wall conforming generally to the overlying mattress corner; a rigid vertical wall formed of sheet material and rigidly attached at its bottom end to said outer perimeter portion of said bottom wall, thereby defining a rigid corner for engagement by the corner portion of a fitted mattress cover thereto; said vertical wall comprising two wall portions disposed in generally perpendicular relationship to each other and to said bottom horizontal wall; an intermediate wall portion rigidly secured in an angular relationship between the adjacent edges of said two wall portions, and an opening formed in said intermediate wall portion to facilitate the handling of the device.
Claim 4
Dependent Claim
143 words
A rigid corner forming device for a corner of a soft deformable mattress on a bed frame comprising: a rigid horizontal wall insertable between the mattress corner and the bed frame; the outer perimeter portions of said bottom wall conforming generally to the overlying mattress corner; a rigid vertical wall formed of sheet material and rigidly attached at its bottom end to said outer perimeter portion of said bottom wall, thereby defining a rigid corner for engagement by the corner portion of a fitted mattress cover thereto; said vertical wall comprising two wall portions disposed in generally perpendicular relationship to each other and to said bottom horizontal wall; an intermediate wall portion rigidly secured in an angular relationship between the adjacent edges of said two wall portions, and an opening formed in said intermediate wall portion to facilitate the handling of the device.
Claim 5
Dependent Claim
139 words
A rigid corner forming device for a corner of a soft deformable mattress on a bed frame comprising; a rigid horizontal wall insertable between the mattress corner and the bed frame; the outer perimeter portions of said bottom wall conforming generally to the overlying mattress corner; a rigid vertical wall formed of sheet material and rigidly attached at its bottom end to said outer perimeter portion of said bottom wall, thereby defining a rigid corner for engagement by the corner portion of a fitted mattress cover thereto; said vertical wall comprising two vertical wall portions disposed in generally perpendicular relationship to each other and to said bottom horizontal wall; wherein the bottom portions of the non-adjacent edges of said two vertical wall portions are recessed to facilitate upward tilting movement of said corner device relative to the bed frame.
Claim 6
Dependent Claim
139 words
A rigid corner forming device for a corner of a soft deformable mattress on a bed frame comprising; a rigid horizontal wall insertable between the mattress corner and the bed frame; the outer perimeter portions of said bottom wall conforming generally to the overlying mattress corner; a rigid vertical wall formed of sheet material and rigidly attached at its bottom end to said outer perimeter portion of said bottom wall, thereby defining a rigid corner for engagement by the corner portion of a fitted mattress cover thereto; said vertical wall comprising two vertical wall portions disposed in generally perpendicular relationship to each other and to said bottom horizontal wall; wherein the bottom portions of the non-adjacent edges of said two vertical wall portions are recessed to facilitate upward tilting movement of said corner device relative to the bed frame.
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) | 1988-09-09 | 1989-03-11 | 1989-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-09 | 1993-03-11 | 1993-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-09 | 1997-03-11 | 1997-09-10 | $7700.00 | Window Closed / Lapsed |