Patent US4768795A successfully refreshed from Google Patents.
US4768795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-purpose stroller with detachable frame
Assignee: HSUAN YUEH ENTERPRISE Co Ltd
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Filing: 1987-06-26
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Granted: 1988-09-06
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Expires: 2007-06-26
Abstract
Abstract A baby stroller comprising a seat portion and a frame portion separable from the seat portion. The stroller seat comprises a concave front portion forming a seat and a pair of opposite retaining walls. A flexible safety belt serving both as fastening means and buffer means is provided on the stroller seat. A pivotally adjustable U-shaped stand, which enables the stroller seat to be positioned as a seat or a bed without the stroller frame attached to, is provided on the back of the stroller seat. The stroller frame is collapsable and can be folded into a compact volume when not in use. The assembly and disassembly of the stroller seat and the stroller frame can be easily achieved by turning a couple of engagement members.
Inventors
- 👤 Shih-Lin Mar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:25
CPC Classifications
B; B62; B62B; B62B7/00; B62B7/04; B62B7/12; B60; B60N; B60N2/00; B60N2/24; B60N2/26; B60N2/28; B60N2/2803; B60N2/2806; B60N2/2809; B60N2/2842; B60N2/2848; B60N2/2857; B60N2/2863; B62B7/006
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
411 words
A multi-purpose stroller with a detachable frame comprising: (a) a stroller seat having a concave front portion forming a seat and a pair of retaining walls; a recess for receiving a car safety belt being provided on a front edge of each said retaining wall; a lengthwise channel being provided on each lateral side of a rear surface of said stroller seat; a hooked brace being perpendicularly mounted on a rear middle position of said stroller seat; (b) a safety fastening belt assembly including an upper and lower part; front portions of said upper and lower parts of said belt being disposed in front of said stroller seat; a rear portion of said upper part of said belt passing through holes on said stroller seat and then attached to a buffer means disposed to the rear surface of said stroller seat; a rear portion of said lower part of said belt passing through a hole on said stroller seat and being fixedly secured to said buffer means; (c) a pivotally adjustable U-shaped stand; each end of said U-shaped stand being pivoted to a supporting plate; each of said supporting plates being mounted on each lateral side of said rear surface of said stroller seat; one of said supporting plates having an arched slot with three positioning recesses therein; a positioning bolt attached to said U-shaped stand going through said U-shaped stand and said arched slot; an extension spring connecting to said positioning bolt; a torsional spring being attached to said U-shaped stand for providing restoring torsional force; a pair of posts facing towards each other each being provided on an inner surface of said U-shaped stand; and (d) a collapsible stroller frame; said stroller frame including a pair of front frame sections for said lengthwise channel to be mounted on; each of said front frame sections having an extendable hand frame section; a pair of rear frame sections each pivoted to one of said front frame sections; two lower frame sections each connecting to one of said rear frame sections and one of said front frame sections; a foldable brace connecting to both of said rear frame sections and engaging said hooked brace of said stroller seat; two casters being attached to lower ends of said front frame sections and two casters attaching to lower ends of said rear frame sections; a pair of detents each being attached to one of said rear frame sections for hooking said pair of posts.
Claim 2
Dependent Claim
411 words
A multi-purpose stroller with a detachable frame comprising: (a) a stroller seat having a concave front portion forming a seat and a pair of retaining walls; a recess for receiving a car safety belt being provided on a front edge of each said retaining wall; a lengthwise channel being provided on each lateral side of a rear surface of said stroller seat; a hooked brace being perpendicularly mounted on a rear middle position of said stroller seat; (b) a safety fastening belt assembly including an upper and lower part; front portions of said upper and lower parts of said belt being disposed in front of said stroller seat; a rear portion of said upper part of said belt passing through holes on said stroller seat and then attached to a buffer means disposed to the rear surface of said stroller seat; a rear portion of said lower part of said belt passing through a hole on said stroller seat and being fixedly secured to said buffer means; (c) a pivotally adjustable U-shaped stand; each end of said U-shaped stand being pivoted to a supporting plate; each of said supporting plates being mounted on each lateral side of said rear surface of said stroller seat; one of said supporting plates having an arched slot with three positioning recesses therein; a positioning bolt attached to said U-shaped stand going through said U-shaped stand and said arched slot; an extension spring connecting to said positioning bolt; a torsional spring being attached to said U-shaped stand for providing restoring torsional force; a pair of posts facing towards each other each being provided on an inner surface of said U-shaped stand; and (d) a collapsible stroller frame; said stroller frame including a pair of front frame sections for said lengthwise channel to be mounted on; each of said front frame sections having an extendable hand frame section; a pair of rear frame sections each pivoted to one of said front frame sections; two lower frame sections each connecting to one of said rear frame sections and one of said front frame sections; a foldable brace connecting to both of said rear frame sections and engaging said hooked brace of said stroller seat; two casters being attached to lower ends of said front frame sections and two casters attaching to lower ends of said rear frame sections; a pair of detents each being attached to one of said rear frame sections for hooking said pair of posts.
Claim 3
Dependent Claim
70 words
A multi-purpose stroller as claimed in claim 1, wherein said buffer means comprises a securement block attached to a rear surface of said stroller seat; a rod retaining said rear portion of the upper part of said fastening belt, and two extension springs; one end of each of said extension springs attaching to said rod and the other end of each of said extension springs attaching to said securement block.
Claim 4
Dependent Claim
85 words
A multi-purpose stroller as claimed in claim 1, wherein each of said rear frame sections comprises an upper and a lower member and a pivot joint connecting to said upper and lower members; each of said pivot joints comprising an upper and a lower disk pivoted together; an engagement detent with a hook being pivoted on said upper disk; a torsional spring attaching to said engagement detent; a recess being provided on said lower disk for said hook of said engagement detent to engage therewith.
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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) | 1991-09-06 | 1992-03-07 | 1992-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-06 | 1996-03-07 | 1996-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-06 | 2000-03-07 | 2000-09-06 | $7700.00 | Window Closed / Lapsed |