← Back to Patent Explorer
US4858947A Expired / Lapsed US ⏱️ 0.0 years remaining

Folding tandem seat baby carriage

Assignee: ORIENTAL TRADING Co Inc A CORP OF CA AB
•
Filing: 1987-10-26
•
Granted: 1989-08-22
•
Expires: 2007-10-26
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A foldable tandem seat baby carriage including a pair of wheeled front legs, a pair of wheeled rear legs, and, in the operative position, two pairs of horizontal longitudinal bars extending between the legs. A U-shaped push handle connects pivotally with the rear of the upper bars, and the free ends of the push handle substantially abut the rear legs about midway along their length. Locking means interengage the push handle with the rear legs in the extended position and bars in the horizontal position to provide tandem multiple seat construction. Release of the lock by foot pressure on a transverse bar extending between the rear legs causes the push handle to move downwardly and forwardly and the two legs to collapse and fold towards each other to be substantially parallel with the push bar in the folded position. The two pairs of parallel longitudinal bars collapse to be substantially parallel towards each other in the folded position. A single action thereby permits folding of the tandem carriage into the folded position. From a folded position, a similar single action provides unfolding to the extended position.

Inventors

  • 👤 David T. Yee
  • 👤 Eric Lin

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 18:15
CPC Classifications
B; B62; B62B; B62B7/00; B62B7/04; B62B7/06; B62B7/08; B62B7/008

Claims Analysis

Total Claims: 26
Claim 1
Independent Claim 269 words
A foldable tandem baby carriage comprising a pair of front legs having wheels mounted at the lower ends, a pair of rear legs having wheels mounted at the lower ends, a first pair of parallel bars extending between each respective front leg and rear leg and pivotally mounted near the upper ends of the respective front leg and rear leg, a second pair of parallel bars extending between each respective front leg and rear leg and pivotally mounted between the top and the bottom of the front leg, the second pair of parallel bars being substantially parallel with the first pair of bars and in an operational position below the first pair, a substantially U-shaped push handle, said push handle having free ends, the free ends of said handle being pivotally connected near the ends of the second pair of bars remote from the front legs, a transverse bar extending between the rear legs and interengaging a lock between the rear legs and the push handle, the transverse bar being operable for disengaging the lock thereby to permit folding, a plurality of tandem seats and backrests extending completely between the pairs of bars, the backrests being connected to the second pair of longitudinal parallel bars so as to be pivotally collapsible relative to the seats about a transverse pivot, wherein in an extended operational position, the first and second parallel bars are substantially horizontal, and in a folded position the legs fold towards each other, the first and second pairs of parallel bars fold together, and the backrests fold downwardly towards the respective seats between the folded parallel bars.
Claim 2
Dependent Claim 269 words
A foldable tandem baby carriage comprising a pair of front legs having wheels mounted at the lower ends, a pair of rear legs having wheels mounted at the lower ends, a first pair of parallel bars extending between each respective front leg and rear leg and pivotally mounted near the upper ends of the respective front leg and rear leg, a second pair of parallel bars extending between each respective front leg and rear leg and pivotally mounted between the top and the bottom of the front leg, the second pair of parallel bars being substantially parallel with the first pair of bars and in an operational position below the first pair, a substantially U-shaped push handle, said push handle having free ends, the free ends of said handle being pivotally connected near the ends of the second pair of bars remote from the front legs, a transverse bar extending between the rear legs and interengaging a lock between the rear legs and the push handle, the transverse bar being operable for disengaging the lock thereby to permit folding, a plurality of tandem seats and backrests extending completely between the pairs of bars, the backrests being connected to the second pair of longitudinal parallel bars so as to be pivotally collapsible relative to the seats about a transverse pivot, wherein in an extended operational position, the first and second parallel bars are substantially horizontal, and in a folded position the legs fold towards each other, the first and second pairs of parallel bars fold together, and the backrests fold downwardly towards the respective seats between the folded parallel bars.
Claim 3
Dependent Claim 27 words
A baby carriage as claimed in claim 1 wherein the free ends of the push handle substantially abut the rear legs at substantially mid-length the rear legs.
Claim 4
Dependent Claim 66 words
A baby carriage as claimed in claim 1 including struts extending between a respective bar of the first pair of parallel bars and the respective bar of the second pair of parallel bars, the struts being pivotally mounted relative to the parallel bars wherein in the extended operative position the struts are forwardly extended and in the folded position the struts are adjacent the rear legs.
Claim 5
Dependent Claim 45 words
A carriage as claimed in claim 3 wherein in the operative extended position, the front legs extends forwards towards the wheels, the rear legs extends slantingly relatively backwards towards the wheels and the push handle extends slantingly rearward relative to the posterior of the carriage.
Claim 6
Dependent Claim 51 words
A carriage as claimed in claim 1 wherein the transverse bar is operative under foot pressure to disengage the lock and wherein downward pressure on the push handle and drawing-in action on the wheel ends of the front legs acts to draw the parallel bars and legs into the folded position.
Claim 7
Dependent Claim 28 words
A carriage as claimed in claim 5 including a catch for holding the push handle together with at least one of the front legs in the folded position.
Claim 8
Dependent Claim 24 words
A carriage as claimed in claim 6 including snapped-on material placed on the first pair of parallel bars to provide sidewalls for the seats.
Claim 9
Dependent Claim 20 words
A carriage as claimed in claim 1 wherein the seats and backrests include frames with removable material on the frames.
Claim 10
Dependent Claim 37 words
A carriage as claimed in claim 1 wherein the backrests are collapsible forwardly, with respect to the upper portion of the backrest, and rearwardly, with respect to the lower portion of the backrest, relative to the seats.
Claim 11
Dependent Claim 27 words
A carriage as claimed in 1 including footrests mounted ahead of and below the seats, the footrests being mounted transversely between the second pair of parallel bars.
Claim 12
Dependent Claim 17 words
A carriage as claimed in claim 7 including a foldable canopy removably mounted on the push handle.
Claim 13
Dependent Claim 28 words
A carriage as claimed in claim 1 wherein at least part of at least one of the seats or backrests is removable thereby to provide for a bed.
Claim 14
Dependent Claim 41 words
A carriage as claimed in claim 1 including a cross bar mounted between anterior terminations of the first parallel bars, said cross bar being mounted anterior to the pivot mounting the front legs and being integral with the first parallel bars.
Claim 15
Dependent Claim 335 words
A foldable tandem baby carriage comprising a pair of front legs having wheels mounted at the lower ends, a pair of rear legs having wheels mounted at the lower ends, a first pair of longitudinal parallel bars extending between each respective front leg and rear leg and pivotally mounted near the upper ends of the respective front leg and rear leg, a second pair of longitudinal parallel bars extending between each respective front leg and rear leg and pivotally mounted between the top and the bottom of the front leg, the second pair of parallel bars being substantially parallel with the first pair of parallel bars and in an operational position below the first pair, a substantially U-shaped push handle, said push handle having ventral free ends, said free ends of the handle being pivotally connected near the end of the second pair of longitudinal bars remote from the front legs, a transverse foot bar extending between the rear legs and interengaging a lock between the rear legs and the push handle, the transverse foot bar being operable for disengaging the lock thereby to permit folding, the lock including a short limb pivotally connected between said free ends of the push handle and the rear legs, the short limb having a pin for cooperation with a slotted hook limb attached to the transverse bar, a plurality of tandem seats and backrests extending completely between the first pair of bars from the front to the back, the backrests being connected to the second pair of longitudinal parallel bars so as to be pivotally adjustable and collapsible relative to the seats about a transverse pivot, said pivots being located on the second pair of longitudinal parallel bars, wherein in an extended operational position the first and second parallel bars are substantially horizontal and in a folded position, the legs fold towards each other, the first and second pairs of parallel bars collapse together, and the backrests fold downwardly towards the respective seats between the collapsed parallel bars.
Claim 16
Dependent Claim 335 words
A foldable tandem baby carriage comprising a pair of front legs having wheels mounted at the lower ends, a pair of rear legs having wheels mounted at the lower ends, a first pair of longitudinal parallel bars extending between each respective front leg and rear leg and pivotally mounted near the upper ends of the respective front leg and rear leg, a second pair of longitudinal parallel bars extending between each respective front leg and rear leg and pivotally mounted between the top and the bottom of the front leg, the second pair of parallel bars being substantially parallel with the first pair of parallel bars and in an operational position below the first pair, a substantially U-shaped push handle, said push handle having ventral free ends, said free ends of the handle being pivotally connected near the end of the second pair of longitudinal bars remote from the front legs, a transverse foot bar extending between the rear legs and interengaging a lock between the rear legs and the push handle, the transverse foot bar being operable for disengaging the lock thereby to permit folding, the lock including a short limb pivotally connected between said free ends of the push handle and the rear legs, the short limb having a pin for cooperation with a slotted hook limb attached to the transverse bar, a plurality of tandem seats and backrests extending completely between the first pair of bars from the front to the back, the backrests being connected to the second pair of longitudinal parallel bars so as to be pivotally adjustable and collapsible relative to the seats about a transverse pivot, said pivots being located on the second pair of longitudinal parallel bars, wherein in an extended operational position the first and second parallel bars are substantially horizontal and in a folded position, the legs fold towards each other, the first and second pairs of parallel bars collapse together, and the backrests fold downwardly towards the respective seats between the collapsed parallel bars.
Claim 17
Dependent Claim 28 words
A carriage as claimed in claim 14 including footrests mounted ahead of and below the seats, the footrests being mounted transversely between the second pair of parallel bars.
Claim 18
Dependent Claim 46 words
A carriage as claimed in claim 15 including snapped-on material placed on the first parallel bars to provide sidewalls for the carriage, the snapped-on material forming part of seats and backrests for each seat and being adapted to snap together so as to be selectively separable.
Claim 19
Dependent Claim 20 words
A carriage as claimed in claim 16 wherein the seats and backrests include frames with removable material on the frames.
Claim 20
Dependent Claim 92 words
A baby carriage as claimed in claim 17 wherein struts extends respectively between the pivot mounting of the top of each rear leg with the first pair of longitudinal bars and the respective bar of the second pair of parallel bars, the struts being pivotally mounted relative to the second parallel bars and being pivotally mounted about the first parallel bar, wherein in the extended operative position the struts are forwardly extended and are substantially parallel with the front legs, and in the folded position the struts are adjacent the rear legs.
Claim 21
Dependent Claim 396 words
A foldable tandem baby carriage comprising a pair of front legs having wheels mounted at the lower ends, a pair of rear legs having wheels mounted at the lower ends, a first pair of longitudinal parallel bars extending between each respective front leg and rear leg and pivotally mounted near the upper ends of the respective front leg and rear leg, a second pair of longitudinal parallel bars extending between each respective front leg and rear leg and pivotally mounted between the top and the bottom of the front leg, the second pair of parallel bars being substantially parallel with the first pair of parallel bars and in an operational position below the first pair, a substantially U-shaped push handle, said push handle having ventral free ends, said free ends of the handle being pivotally connected with the ends of the second pair of longitudinal bars remote from the front legs, a plurality of tandem seats and backrests extending between the first pair of bars from the front to the back, the backrests being connected to the second pair of longitudinal parallel bars so as to be pivotally adjustable and collapsible relative to the seats about a transverse pivot, said pivots being located on the second pair of longitudinal parallel bars, wherein in an extended operational position, the first and second parallel bars are substantially horizontal and in a folded position, the legs fold towards each other, the first and second pair of parallel bars collapse together, and the backrests fold downwardly towards the respective seats between the collapsed parallel bars, struts extending respectively between the pivot mounting of the top of each rear leg with the first pair of longitudinal bars and the respective bar of the second pair of parallel bars, the struts being pivotally mounted relative to the second parallel bars, and being pivotally mounted about the first parallel bar wherein in the extended operative position, the struts are forwardly extended and are substantially parallel with the front legs and in the folded position the struts are adjacent the rear legs, a transverse foot bar extending between the rear legs and interengaging a lock between the rear legs and the push handle, the transverse foot bar being operable for disengaging the lock thereby to permit folding on downward pressure of the push handle and raising of the parallel bars towards the push handle.
Claim 22
Dependent Claim 396 words
A foldable tandem baby carriage comprising a pair of front legs having wheels mounted at the lower ends, a pair of rear legs having wheels mounted at the lower ends, a first pair of longitudinal parallel bars extending between each respective front leg and rear leg and pivotally mounted near the upper ends of the respective front leg and rear leg, a second pair of longitudinal parallel bars extending between each respective front leg and rear leg and pivotally mounted between the top and the bottom of the front leg, the second pair of parallel bars being substantially parallel with the first pair of parallel bars and in an operational position below the first pair, a substantially U-shaped push handle, said push handle having ventral free ends, said free ends of the handle being pivotally connected with the ends of the second pair of longitudinal bars remote from the front legs, a plurality of tandem seats and backrests extending between the first pair of bars from the front to the back, the backrests being connected to the second pair of longitudinal parallel bars so as to be pivotally adjustable and collapsible relative to the seats about a transverse pivot, said pivots being located on the second pair of longitudinal parallel bars, wherein in an extended operational position, the first and second parallel bars are substantially horizontal and in a folded position, the legs fold towards each other, the first and second pair of parallel bars collapse together, and the backrests fold downwardly towards the respective seats between the collapsed parallel bars, struts extending respectively between the pivot mounting of the top of each rear leg with the first pair of longitudinal bars and the respective bar of the second pair of parallel bars, the struts being pivotally mounted relative to the second parallel bars, and being pivotally mounted about the first parallel bar wherein in the extended operative position, the struts are forwardly extended and are substantially parallel with the front legs and in the folded position the struts are adjacent the rear legs, a transverse foot bar extending between the rear legs and interengaging a lock between the rear legs and the push handle, the transverse foot bar being operable for disengaging the lock thereby to permit folding on downward pressure of the push handle and raising of the parallel bars towards the push handle.
Claim 23
Dependent Claim 29 words
A carriage as claimed in 19 including footrests mounted ahead of and below the seats, the footrests being mounted adjustably and transversely between the second pair of parallel bars.
Claim 24
Dependent Claim 313 words
A foldable tandem baby carriage comprising a pair of front legs having wheels mounted at the lower ends, a pair of rear legs having wheels at the lower ends, a first pair of parallel bars extending between each respective front leg and rear leg and pivotally mounted near the upper ends of the respective front leg and rear leg, a second pair of parallel bars extending between each respective front leg and rear leg and pivotally mounted between the top and the bottom of the front leg, the second pair of parallel bars being substantially parallel with the first pair of parallel bars, and in an operational position below the first pair, a substantially U-shaped push handle having free ends, the free ends of the handle being pivotally connected near the ends of the second pair of bars remote from the front legs, a plurality of tandem seats and backrests extending completely between the pairs of bars, the backrests being connected to the second pair of longitudinal parallel bars so as to be pivotally collapsible relative to the seats about a transverse pivot, wherein in an extended operational position, the first and second parallel bars are substantially horizontal, and in a folded position, the legs fold towards each other, the first and second pair of parallel bars fold together, and the backrests fold downwardly towards the respective seats between the folded parallel bars, struts extending between a respective bar of the first pair of parallel bars, and the respective bar of the second pair of parallel bars, the struts being pivotally mounted relative to the parallel bars wherein in the extended operative position the struts are forwardly extended and in the folded position the struts are adjacent the rear legs and the struts cooperate with at least one of the backrests to cause the backrest to fold downwardly when in the folded position.
Claim 25
Dependent Claim 313 words
A foldable tandem baby carriage comprising a pair of front legs having wheels mounted at the lower ends, a pair of rear legs having wheels at the lower ends, a first pair of parallel bars extending between each respective front leg and rear leg and pivotally mounted near the upper ends of the respective front leg and rear leg, a second pair of parallel bars extending between each respective front leg and rear leg and pivotally mounted between the top and the bottom of the front leg, the second pair of parallel bars being substantially parallel with the first pair of parallel bars, and in an operational position below the first pair, a substantially U-shaped push handle having free ends, the free ends of the handle being pivotally connected near the ends of the second pair of bars remote from the front legs, a plurality of tandem seats and backrests extending completely between the pairs of bars, the backrests being connected to the second pair of longitudinal parallel bars so as to be pivotally collapsible relative to the seats about a transverse pivot, wherein in an extended operational position, the first and second parallel bars are substantially horizontal, and in a folded position, the legs fold towards each other, the first and second pair of parallel bars fold together, and the backrests fold downwardly towards the respective seats between the folded parallel bars, struts extending between a respective bar of the first pair of parallel bars, and the respective bar of the second pair of parallel bars, the struts being pivotally mounted relative to the parallel bars wherein in the extended operative position the struts are forwardly extended and in the folded position the struts are adjacent the rear legs and the struts cooperate with at least one of the backrests to cause the backrest to fold downwardly when in the folded position.
Claim 26
Dependent Claim 16 words
A carriage as claimed in claim 21 wherein the strut cooperates with a forwardly located backrest.

References Cited (Backward Citations)

US1842159A Cited
US2872203A Cited
US3248125A Cited
US3309101A Cited
US3330575A Cited
US4506907A Cited
US4597116A Cited
US4542915A Cited
US4529219A Cited
US4660850A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1992-08-21 1993-02-20 1993-08-22 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1996-08-21 1997-02-20 1997-08-22 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2000-08-21 2001-02-20 2001-08-22 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag