Patent US6135553A successfully refreshed from Google Patents.
US6135553A
Expired / Lapsed
US
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Child safety seat
Assignee: Britax Excelsior Ltd
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Filing: 1999-12-01
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Granted: 2000-10-24
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Expires: 2019-12-01
Abstract
Abstract A child safety seat for a motor vehicle comprising a seat body (10) having a back portion (16) and a seat portion (14), an upper back support (34) mounted on the back portion (16) for movement in a direction towards and away from the seat portion (14). The upper back support (34) is movable relative to the back portion (16) and the angle between the upper back support (34) and the seat portion (14) decreases as the upper back support (34) moves towards the seat portion (14).
Inventors
- 👤 David Lovie
- 👤 Robert Stephen Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:23
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/24; B60N2/26; B60N2/28; B60N2/2881; B60N2/2821; B60N2/2842; B60N2/2845; B60N2/2851; B60N2/2857; B60N2/286
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
111 words
A child safety seat for a motor vehicle comprising a seat body having a back portion and a seat portion, an upper back support mounted on the back portion for movement in a direction towards and away from the seat portion, a camming mechanism comprising a cam surface on the seat body and a cam follower on the upper back support for varying the position of the upper back support relative to the back portion, said camming mechanism coupling the upper back support to the back portion so that an angle between the upper back support and the seat portion decreases as the upper back support moves towards the seat portion.
Claim 2
Dependent Claim
111 words
A child safety seat for a motor vehicle comprising a seat body having a back portion and a seat portion, an upper back support mounted on the back portion for movement in a direction towards and away from the seat portion, a camming mechanism comprising a cam surface on the seat body and a cam follower on the upper back support for varying the position of the upper back support relative to the back portion, said camming mechanism coupling the upper back support to the back portion so that an angle between the upper back support and the seat portion decreases as the upper back support moves towards the seat portion.
Claim 3
Dependent Claim
20 words
A child safety seat according to claim 1, wherein a head support is secured fast with the upper back support.
Claim 4
Dependent Claim
35 words
A child safety seat according to claim 2, wherein the head support comprises a central portion and side wings spaced apart from one another by a distance less than the width of the back portion.
Claim 5
Dependent Claim
40 words
A child safety seat according to claim 1, further comprising a latch lever operative in a first position to prevent movement of the upper back support and operative in a second position to allow movement of the upper back support.
Claim 6
Dependent Claim
36 words
A child safety seat according to claim 4, wherein the latch lever carries a cam formation arranged to engage with a complementary formation on the back portion when the latch lever is in its first position.
Claim 7
Dependent Claim
51 words
A child safety seat according to claim 5, further comprising a harness including two shoulder straps each projecting through a respective slot in the upper back support, and an inhibiting mechanism for resisting movement of the latch lever from its first position to its second position when the harness is fastened.
Claim 8
Dependent Claim
18 words
A child safety seat according to claim 6, wherein the inhibiting mechanism comprises guides for the shoulder straps.
Claim 9
Dependent Claim
51 words
A child safety seat according to claim 4, further comprising a harness including two shoulder straps each projecting through a respective slot in the upper back support, and an inhibiting mechanism for resisting movement of the latch lever from its first position to its second position when the harness is fastened.
Claim 10
Dependent Claim
18 words
A child safety seat according to claim 8, wherein the inhibiting mechanism comprises guides for the shoulder straps.
Claim 11
Dependent Claim
121 words
A child safety seat for a motor vehicle comprising a seat body having a back portion and a seat portion, a back support having an upper end and a lower end, a drive mechanism coupling the back support to the back portion operative to move the back support between a position parallel to the back portion and a position with its upper end at a location on the back portion above the seat portion, its lower end at a location on the seat portion in front of the back portion, so that an angle between the upper back support and the seat portion is constrained to decrease as the upper end of the upper back support moves towards the seat portion.
Claim 12
Dependent Claim
121 words
A child safety seat for a motor vehicle comprising a seat body having a back portion and a seat portion, a back support having an upper end and a lower end, a drive mechanism coupling the back support to the back portion operative to move the back support between a position parallel to the back portion and a position with its upper end at a location on the back portion above the seat portion, its lower end at a location on the seat portion in front of the back portion, so that an angle between the upper back support and the seat portion is constrained to decrease as the upper end of the upper back support moves towards the seat portion.
Claim 13
Dependent Claim
20 words
A child safety seat according to claim 10, wherein a head support is secured fast with the upper back support.
Claim 14
Dependent Claim
35 words
A child safety seat according to claim 11, wherein the head support comprises a central portion and side wings spaced apart from one another by a distance less than the width of the back portion.
Claim 15
Dependent Claim
122 words
A child safety seat for a motor vehicle comprising a seat body having a back portion and a seat portion, an upper back support mounted on the back portion for movement in a direction towards and away from the seat portion, a drive mechanism coupling the upper back support to the back portion for varying the position of the upper back support relative to the back portion so that an angle between the upper back support and the seat portion decreases as the upper back support moves towards the seat portion, and a latch lever operative in a first position to prevent movement of the upper back support and operative in a second position to allow movement of the upper back support.
Claim 16
Dependent Claim
122 words
A child safety seat for a motor vehicle comprising a seat body having a back portion and a seat portion, an upper back support mounted on the back portion for movement in a direction towards and away from the seat portion, a drive mechanism coupling the upper back support to the back portion for varying the position of the upper back support relative to the back portion so that an angle between the upper back support and the seat portion decreases as the upper back support moves towards the seat portion, and a latch lever operative in a first position to prevent movement of the upper back support and operative in a second position to allow movement of the upper back support.
Claim 17
Dependent Claim
36 words
A child safety seat according to claim 13, wherein the latch lever carries a cam formation arranged to engage with a complementary formation on the back portion when the latch lever is in its first position.
Claim 18
Dependent Claim
51 words
A child safety seat according to claim 14, further comprising a harness including two shoulder straps each projecting through a respective slot in the upper back support, and an inhibiting mechanism for resisting movement of the latch lever from its first position to its second position when the harness is fastened.
Claim 19
Dependent Claim
18 words
A child safety seat according to claim 15, wherein the inhibiting mechanism comprises guides for the shoulder straps.
Claim 20
Dependent Claim
51 words
A child safety seat according to claim 13, further comprising a harness including two shoulder straps each projecting through a respective slot in the upper back support, and an inhibiting mechanism for resisting movement of the latch lever from its first position to its second position when the harness is fastened.
Claim 21
Dependent Claim
18 words
A child safety seat according to claim 17, wherein the inhibiting mechanism comprises guides for the shoulder straps.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-10-24 | 2004-04-24 | 2004-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-10-24 | 2008-04-24 | 2008-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-10-24 | 2012-04-24 | 2012-10-24 | $7700.00 | Window Closed / Lapsed |