US4478427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foldable infant stroller
Assignee: CALIFORNIA STROLEE Inc A CORP OF CA
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Filing: 1982-12-27
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Granted: 1984-10-23
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Expires: 2002-12-27
Abstract
Abstract A foldable infant stroller which may be released and folded to a closed position or unfolded to an open position by one hand. The design and construction of the stroller is such that simply pushing or pulling on the handle portion of the stroller against the front wheels of the stroller moves the stroller from a folded or unfolded position. A latch mechanism may be activated by means of depressing a knob located in close proximity to the handle bar portion of the stroller, allowing the knob to be depressed simultaneously with pulling or pushing on the handle bar portion to fold or unfold the stroller. A hook mechanism, actuated by the knob on the handle bar portion of the stroller will engage either of a pair of catches to hold the stroller in either the folded or unfolded position.
Inventors
- 👤 Richard E. Hyde
- 👤 Lee T. Carmichael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:42
CPC Classifications
B; B62; B62B; B62B7/00; B62B7/04; B62B7/06; B62B7/08; B62B9/00; B62B9/20; B62B2205/00; B62B2205/20; B62B2205/22
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
251 words
An infant stroller, foldable from an open position to a more compact closed position by a simple one hand operation, the stroller comprising: a. a main frame assembly having pivotally attached frame members foldable between open and closed positions; b. a U-shaped member, having side portions and a base portion, the side portions of which are attached to said frame assembly, such that downward movement of said U-shaped member causes said frame assembly to fold, and upward movement causes said frame assembly to unfold, said base portion of said U-shaped member extending rearwardly and upwardly therefrom to a position where it may be grasped and used as a handle by the operator of the stroller; c. a seat assembly attached to said frame; and d. means for securing the carrier to a closed position and to an open position, said means comprising: (i) a latch assembly on said U-shaped member, said latch assembly having a hook pivotally attached to said U-shaped member and actuating means for causing the hook to pivot, said actuating means extending up said U-shaped member to a position on the base portion of said U-shaped member where it may be comfortably reached by the hand of a standing operator of the carrier; and (ii) first and second catches attached to said frame and positioned such that said hook engages the first of said catches when the carrier is in the open position and the second of said catches when the carrier is in the compact, closed position.
Claim 2
Dependent Claim
251 words
An infant stroller, foldable from an open position to a more compact closed position by a simple one hand operation, the stroller comprising: a. a main frame assembly having pivotally attached frame members foldable between open and closed positions; b. a U-shaped member, having side portions and a base portion, the side portions of which are attached to said frame assembly, such that downward movement of said U-shaped member causes said frame assembly to fold, and upward movement causes said frame assembly to unfold, said base portion of said U-shaped member extending rearwardly and upwardly therefrom to a position where it may be grasped and used as a handle by the operator of the stroller; c. a seat assembly attached to said frame; and d. means for securing the carrier to a closed position and to an open position, said means comprising: (i) a latch assembly on said U-shaped member, said latch assembly having a hook pivotally attached to said U-shaped member and actuating means for causing the hook to pivot, said actuating means extending up said U-shaped member to a position on the base portion of said U-shaped member where it may be comfortably reached by the hand of a standing operator of the carrier; and (ii) first and second catches attached to said frame and positioned such that said hook engages the first of said catches when the carrier is in the open position and the second of said catches when the carrier is in the compact, closed position.
Claim 3
Dependent Claim
76 words
The invention of claim 1 wherein said actuating means further comprises a push/pull rod attached to said hook, and extending upwardly therefrom through said side portion of said U-shaped member to a position near the juncture of said side portion and said base portion of said U-shaped member, wherein said push-pull rod extends a distance thereabove to be accessible to the operator of the carrier, and be pushed or pulled to cause the hook to pivot.
Claim 4
Dependent Claim
24 words
The invention of claim 2 wherein said hook assembly has biasing means for biasing said hook to the position for engagement with said catch.
Claim 5
Dependent Claim
131 words
The invention of claim 3 wherein said main frame assembly further comprises a top frame member having pivotally attached thereto, and extending downwardly and rearwardly therefrom, a pair of rear leg members, said rear leg members pivotable through an arc which brings said top frame member and said rear leg members into approximate parallel alignment, said rear leg members pivotally attached, near its end distal from the top frame member, to said side portion of said U-shaped member, and said top frame member slidably attached to said side portions of said U-shaped member such that movement of said U-shaped member causes said rear leg members to rotate vis-a-vis said top frame member, while said top frame member slides along said U-shaped member to either fold or unfold said main frame assembly.
Claim 6
Dependent Claim
29 words
The invention of claim 4 further comprising a first pair of wheels attached to said top frame member and a wheel attached to each of said rear leg members.
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) | 1987-10-23 | 1988-04-23 | 1988-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-23 | 1992-04-23 | 1992-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-23 | 1996-04-23 | 1996-10-23 | $7700.00 | Window Closed / Lapsed |