US3901528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Baby carriage
Assignee: Individual
•
Filing: 1973-04-05
•
Granted: 1975-08-26
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Expires: 1993-04-05
Abstract
Abstract A collapsible baby carriage is disclosed. The front and back legs are so connected to the arm rest bar and the handle bar that the entire assembly can be folded to a compact unit wherein the handle bar can be used as a carrying handle for the collapsed structure.
Inventors
- 👤 Takeshi Miyagi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:55
CPC Classifications
B; B62; B62B; B62B7/00; B62B7/04; B62B7/06; B62B7/08; B62B7/064
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
357 words
A foldable baby carriage having folded and unfolded positions comprising: a. a pair of front legs each of which has a first end attached to a wheel and a second end for pivotal attachment; b. a pair of rear legs each of which has a first end attached to a wheel, a second end for pivotal attachment and an abutting face on second end; c. a pair of handle bar legs each having a first end for attachment to a handle and a second end for pivotal attachment; d. a pair of arm rest bars each having a first end for attachment to an arm rest and a second end for pivotal attachment; e. the second end of each front leg being pivotably connected to a handle bar leg at a point spaced from the second end of the handle bar leg; f. the second end of each rear leg being pivotably connected to a handle bar leg at a point closer to the second end thereof than the point of attachment of the front leg to the handle bar leg; g. the attachment and configuration of the said front and rear legs being such that the abutting face on the second end of each said rear leg abuts the periphery of a front leg when the carriage is in its unfolded position; h. the second end of each arm rest bar being pivotably connected to a rear leg and a handle bar leg at the same point that the rear leg and the handle bar leg are pivotably connected to each other; i. means attached to each front leg at a point spaced from the second end thereof and to each arm rest bar at a point spaced from the second end thereof to prevent unintentional collapsing of the carriage in its unfolded position; j. a prefabricated bag attached to each said front leg, each said handle bar leg and each said arm rest bar; k. a handle bar attached to the first end of each said handle bar leg; and l. an arm rest attached to the first end of each said arm rest bar.
Claim 2
Dependent Claim
357 words
A foldable baby carriage having folded and unfolded positions comprising: a. a pair of front legs each of which has a first end attached to a wheel and a second end for pivotal attachment; b. a pair of rear legs each of which has a first end attached to a wheel, a second end for pivotal attachment and an abutting face on second end; c. a pair of handle bar legs each having a first end for attachment to a handle and a second end for pivotal attachment; d. a pair of arm rest bars each having a first end for attachment to an arm rest and a second end for pivotal attachment; e. the second end of each front leg being pivotably connected to a handle bar leg at a point spaced from the second end of the handle bar leg; f. the second end of each rear leg being pivotably connected to a handle bar leg at a point closer to the second end thereof than the point of attachment of the front leg to the handle bar leg; g. the attachment and configuration of the said front and rear legs being such that the abutting face on the second end of each said rear leg abuts the periphery of a front leg when the carriage is in its unfolded position; h. the second end of each arm rest bar being pivotably connected to a rear leg and a handle bar leg at the same point that the rear leg and the handle bar leg are pivotably connected to each other; i. means attached to each front leg at a point spaced from the second end thereof and to each arm rest bar at a point spaced from the second end thereof to prevent unintentional collapsing of the carriage in its unfolded position; j. a prefabricated bag attached to each said front leg, each said handle bar leg and each said arm rest bar; k. a handle bar attached to the first end of each said handle bar leg; and l. an arm rest attached to the first end of each said arm rest bar.
Claim 3
Dependent Claim
32 words
The foldable baby carriage of claim 1 further comprising a connecting rod pivotably attached to each front leg and each rear leg at a point intermediate the first and second ends thereof.
Claim 4
Dependent Claim
122 words
The foldable baby carriage of claim 1 wherein the cooperating means to prevent unintentional collapsing comprises an elongated plate pivotably connected to the first leg at a point further removed from the second end than the point of abutment of the abutting face of the second end of the rear leg with the periphery of the front leg and pivotably connected to the arm rest bar at a point spaced from the second end thereof, said plate when the baby carriage is in its unfolded position abutting stop means mounted on said front leg at a point more remote from the second end of said front leg than the point of attachment of the said elongated plate to the said front leg.
Claim 5
Dependent Claim
22 words
The foldable baby carriage of claim 1 wherein the said pair of handle bar legs are joined together at their first ends.
Claim 6
Dependent Claim
21 words
The foldable baby carriage of claim 4 wherein said handle bar legs are both formed from a single piece of material.
Claim 7
Dependent Claim
22 words
The foldable baby carriage of claim 1 wherein the said pair of arm rest legs are joined together at their first ends.
Claim 8
Dependent Claim
21 words
The foldable baby carriage of claim 6 wherein said arm rest legs are both formed from a single piece of material.
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) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |