US4364576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Baby walker
Assignee: Aprica Kassai KK
•
Filing: 1980-10-29
•
Granted: 1982-12-21
•
Expires: 2000-10-29
Abstract
Abstract A baby walker is provided with a substantially doughnut-shaped upper frame and a seat suspended from the upper frame by three straps. The end of each strap is provided with an engaging bar disposed at right angles with the direction of the length of the strap. The opposite ends of the engaging bar project beyond the widthwise ends of the strap. Attached to the lower surface of the upper frame are adjusting members each having a plurality of downwardly opened recesses. A guide member is provided adjacent each adjusting member and spaced apart from the lower surface of the upper frame. The straps are led from below the upper frame and mounted on the upper surfaces of the guide members, with the ends of the straps being led to the adjusting members. Each engaging bar engages one of the associated engaging recesses. In this state, the load on the seat forces the engaging bars into the innermost regions of the engaging recesses.
Inventors
- 👤 Kenzou Kassai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:40
CPC Classifications
A; A47; A47D; A47D13/00; A47D13/04; A47D13/043
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
210 words
A baby walker comprising: an upper frame disposed at a predetermined distance from the floor and having an opening for receiving the torso of a baby, wheel holding means including wheels adapted to roll along the floor for movably supporting said upper frame with respect to the floor, adjusting members attached to the lower surface of said upper frame, each adjusting member having a plurality of pairs of engaging recesses which are opening downwardly and which are transversely arranged, a seat disposed below said opening in said upper frame, straps for suspending said seat from said upper frame, said straps being connected at one of their respective ends to said seat, engaging bars installed at the other ends of said straps at right angles to the direction of the length of said straps and adapted to engage any one of said pairs of engaging recesses of its associated adjusting member, and guide means which contacts part of an associated strap to define the path along which said strap extends, said guide means being arranged so that when a load on said seat is transmitted to the strap, a tension is exerted on said strap to force said engaging bar ends into the innermost regions of said pair of engaging recesses.
Claim 2
Dependent Claim
210 words
A baby walker comprising: an upper frame disposed at a predetermined distance from the floor and having an opening for receiving the torso of a baby, wheel holding means including wheels adapted to roll along the floor for movably supporting said upper frame with respect to the floor, adjusting members attached to the lower surface of said upper frame, each adjusting member having a plurality of pairs of engaging recesses which are opening downwardly and which are transversely arranged, a seat disposed below said opening in said upper frame, straps for suspending said seat from said upper frame, said straps being connected at one of their respective ends to said seat, engaging bars installed at the other ends of said straps at right angles to the direction of the length of said straps and adapted to engage any one of said pairs of engaging recesses of its associated adjusting member, and guide means which contacts part of an associated strap to define the path along which said strap extends, said guide means being arranged so that when a load on said seat is transmitted to the strap, a tension is exerted on said strap to force said engaging bar ends into the innermost regions of said pair of engaging recesses.
Claim 3
Dependent Claim
15 words
A baby walker as set forth in claim 1, wherein said engaging recesses extend vertically.
Claim 4
Dependent Claim
47 words
A baby walker as set forth in claim 2, wherein said guide means defines an upwardly directed surface located above the level of the uppermost ends of said pairs of engaging recesses, and wherein said strap is mounted on said upwardly directed surface of said guide means.
Claim 5
Dependent Claim
40 words
A baby walker as set forth in claim 3, wherein said guide means includes a rotatably supported roller spaced apart from the lower surface of said upper frame, and wherein a portion of said roller forms an upwardly directed surface.
Claim 6
Dependent Claim
57 words
A baby walker as set forth in claim 4, wherein said roller is eccentrically and rotatably supported on a shaft, whereby a larger-radius portion of said roller is movable into a top position for clamping said strap between the lower surface of said upper frame and the peripheral surface portion of said larger-radius portion of said roller.
Claim 7
Dependent Claim
33 words
A baby walker as set forth in claim 5, further including a lower receiving member adapted to support said engaging bar received in any one of said pair of engaging recesses, from below.
Claim 8
Dependent Claim
60 words
A baby walker as set forth in claim 6, wherein said lower receiving member is integral with said roller and extends radially from the peripheral surface of said roller in such a direction that when said larger-radius portion of said roller assumes the top position, said lower receiving member extends along and under said plurality of pairs of engaging recesses.
Claim 9
Dependent Claim
21 words
A baby walker as set forth in claim 1, wherein said engaging recesses extend from below to assume an inverted-J shape.
Claim 10
Dependent Claim
41 words
A baby walker as set forth in claim 8, wherein said guide means causes said strap to extend in a direction which pulls the associated bar ends into the innermost regions of the engaging pairs of recesses curved in inverted-J shape.
Claim 11
Dependent Claim
48 words
A baby walker as set forth in claim 9, wherein said guide means includes a guide opening defined by a vertically extending cylindrical portion formed on said upper frame, and wherein said strap is received in said guide opening from above to extend downwardly through said guide opening.
Claim 12
Dependent Claim
32 words
A baby walker as set forth in claim 10, wherein the innermost regions of the engaging recesses having an inverted-J shape are located on the side where said guide opening is provided.
Claim 13
Dependent Claim
200 words
A baby walker comprising: an upper frame disposed at a predetermined distance from the floor and having means which defines an opening for receiving the torso of a baby, wheel holding means including wheels adapted to roll along the floor and to movably support said upper frame with respect to the floor, adjusting members attached to the lower surface of the upper frame and each having a plurality of pairs of downwardly opened and transversely arranged engaging recesses, a seat disposed below said opening in said upper frame, straps suspending said seat from said upper frame and connected at one of their respective ends to said seat, an engaging bar provided at the other end of each of said straps at right angles relative to the direction of the length of the strap, and guide opening means provided on said upper frame for respectively receiving said straps therein from above, said straps extending downwardly through said guide opening means, each guide opening having a diameter smaller than the length of said associated engaging bar, and wherein said engaging bar ends are forced into the innermost recesses of their associated pair of adjusting members when tension is exerted on said straps.
Claim 14
Dependent Claim
200 words
A baby walker comprising: an upper frame disposed at a predetermined distance from the floor and having means which defines an opening for receiving the torso of a baby, wheel holding means including wheels adapted to roll along the floor and to movably support said upper frame with respect to the floor, adjusting members attached to the lower surface of the upper frame and each having a plurality of pairs of downwardly opened and transversely arranged engaging recesses, a seat disposed below said opening in said upper frame, straps suspending said seat from said upper frame and connected at one of their respective ends to said seat, an engaging bar provided at the other end of each of said straps at right angles relative to the direction of the length of the strap, and guide opening means provided on said upper frame for respectively receiving said straps therein from above, said straps extending downwardly through said guide opening means, each guide opening having a diameter smaller than the length of said associated engaging bar, and wherein said engaging bar ends are forced into the innermost recesses of their associated pair of adjusting members when tension is exerted on said straps.
References Cited (Backward Citations)
NL109207C
Cited
DE204688C
Cited
US74596A
Cited
US1274862A
Cited
US1535071A
Cited
US1647108A
Cited
US1866860A
Cited
DE622199C
Cited
GB509018A
Cited
FR972540A
Cited
US3429537A
Cited
US3558131A
Cited
US3837048A
Cited
US3863303A
Cited
US3995820A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-12-20 | 1986-06-21 | 1986-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-20 | 1990-06-21 | 1990-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-20 | 1994-06-21 | 1994-12-21 | $7700.00 | Window Closed / Lapsed |