US Patent No: 4,821,355
Number of patents in Portfolio can not be more than 2000
Self-adjusting orthopedic cervical pillow
Stats
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Apr 18, 1989
Issued date -
Nov 19, 1987
filing date -
07/123,530
serial no -
Expired
status
Importance
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Abstract
An orthopedic cervical pillow is disclosed which has a substantially flat undersurface and an uppersurface contoured to form a back engaging portion transitioning into a convex neck engaging portion further transitioning into a head engaging portion. Self-adjusting lift of the back and neck engaging portions is accomplished by means of a relieved section in the undersurface of the pillow generally beneath the head engaging portion. The relieved section extends entirely across the width of the pillow and extends from a forwardmost point underneath the neck engaging portion to approximately halfway under the head engaging portion wherein the contour of the relieved section assumes a substantially vertical contour at its rearmost portion.
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First Claim
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International Classification(s)
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- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 4,218,792 Orthopaedic pillow | 80 | 1979 | |
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| D254029 Medical pillow | 35 | 1977 | |
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| D276938 Surgical pillow | 38 | 1980 | |
| 4,424,599 Cervical pillow | 58 | 1980 | |
| 4,447,922 Pillow apparatus | 19 | 1982 | |
| 4,528,705 Composite pillow | 43 | 1983 | |