A backrest assembly for a wheelchair includes a support plate pivotally connected to a seat, wherein the support plate is configured to be pivotally adjusted between upright and reclined positions with respect to the seat; a slide plate slidably secured on a front surface of the support plate; and a
A backrest assembly for a wheelchair includes a support plate pivotally connected to a seat, wherein the support plate is configured to be pivotally adjusted between upright and reclined positions with respect to the seat; a slide plate slidably secured on a front surface of the support plate; and a backrest adjustment assembly operatively connected to the support plate and the slide plate. The backrest adjustment assembly includes a link configured to adjust the support plate. The slide plate slides over the support plate through the link.
대표청구항▼
1. A backrest for a seat, the backrest comprising: a support plate configured to be pivotally adjusted between upright and reclined positions with respect to the seat;a slide plate slidably secured to a front side of said support plate; anda pivot arm positioned between said support plate and said s
1. A backrest for a seat, the backrest comprising: a support plate configured to be pivotally adjusted between upright and reclined positions with respect to the seat;a slide plate slidably secured to a front side of said support plate; anda pivot arm positioned between said support plate and said slide plate and having a protrusion extending through said slide plate, said pivot arm being connected to the seat;wherein, when said support plate is pivotally adjusted, said pivot arm moves with respect to said slide plate and said slide plate slides along said support plate. 2. The backrest of claim 1, further including a link that is operatively connected to said pivot arm. 3. The backrest of claim 2, wherein said link is connected to the seat. 4. The backrest of claim 2, wherein said link is connected to a frame member. 5. The backrest of claim 2, wherein said link is connected to a post. 6. The backrest of claim 1, wherein said slide plate includes a slot. 7. The backrest of claim 6, wherein said protrusion is slidably retained in said slot. 8. The backrest of claim 1, wherein, when said support plate is adjusted toward the reclined position, said slide plate slides toward the seat. 9. The backrest of claim 1, wherein said backrest is attached to a wheelchair. 10. A backrest for a seat, the backrest comprising: a support plate configured to be pivotally adjusted between upright and reclined positions with respect to the seat;a slide plate slidably secured to a front side of said support plate; anda pivot arm positioned between said support plate and said slide plate and having a knob that extends through said slide plate and that can move with respect to said slide plate, said pivot arm being connected to the seat;wherein, when said support plate is pivotally adjusted, said knob of said pivot arm moves with respect to said slide plate and said slide plate slides along said support plate. 11. The backrest of claim 10, further including a link that is operatively connected to said pivot arm and to a frame member. 12. The backrest of claim 11, wherein said link is connected to a post on said frame member. 13. The backrest of claim 10, wherein, when said support plate is adjusted toward the reclined position, said slide plate slides toward the seat. 14. The backrest of claim 10, wherein said backrest is attached to a wheelchair. 15. A backrest for a seat, the backrest comprising: a support plate configured to be pivotally adjusted between upright and reclined positions with respect to the seat;a slide plate slidably secured to a front side of said support plate; anda pivot arm positioned between said support plate and said slide plate and having a protrusion that extends through a slot in said slide plate and that can move within the slot of said slide plate, said pivot arm being connected to the seat;wherein, when said support plate is pivotally adjusted, said pivot arm moves with respect to said slot of said slide plate and said slide plate slides along said support plate. 16. The backrest of claim 15, further including a link that is operatively connected to said pivot arm and to a frame member. 17. The backrest of claim 16, wherein said link is connected to a frame member. 18. The backrest of claim 16, wherein said link is connected to a post. 19. The backrest assembly of claim 15, wherein, when said support plate is adjusted toward the reclined position, said slide plate slides toward the seat. 20. The backrest of claim 10, wherein said backrest is attached to a wheelchair.
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이 특허에 인용된 특허 (33)
Counts David M. (Fresno CA) Stevens Rex W. (Clovis CA), Adjustable backrest apparatus for wheelchairs.
Dinsmoor ; III John C. (Westminster CO) Van Everen Barry (Loveland CO) Johnson Michael W. (Lafayette CO) Denton Grant C. (Boulder CO), Wheelchair back system.
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