Patent US5013032A successfully refreshed from Google Patents.
US5013032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Child walker-trainer
Assignee: Individual
•
Filing: 1988-10-14
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Granted: 1991-05-07
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Expires: 2008-10-14
Abstract
Abstract This invention relates to a child walker-trainer. The walker-trainer consists of a frame preferably in the form of a push toy. At least three wheels are mounted to the frame. At least one of the wheels is mounted axially to the frame to form a rear wheel axis rearward of the other wheels. The invention preferably includes two rear wheels and two forward wheels. A handle attached to the frame extends upwardly and rearwardly of the rear wheel axis such that a downward force applied to the handle causes the walker-trainer to pivot along the rear wheel axis. The invention includes means for immobilizing the walker-trainer when a downward force is applied to the handle which causes the walker-trainer to pivot along the rear wheel axis. The immobilizing means preferably includes a flat, "U" shaped skid attached either to the frame or to the handle, such that it extends rearwardly of the rear wheel axis and is substantially parallel to and positioned slightly above the walking surface. A downward force applied to the handle causes the skid to engage the walking surface and immobilize the walker-trainer.
Inventors
- 👤 Lloyd Baum
- 👤 Dan E. Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:46
CPC Classifications
A; A47; A47D; A47D13/00; A47D13/04
Claims Analysis
Total Claims: 47
Claim 1
Independent Claim
150 words
A child walker-trainer comprising: a frame having at least three wheels mounted thereon such that the wheels engage a substantially planar walking surface upon which the walker-trainer moves, at least one of the wheels being mounted axially to the frame to form a rear wheel axis rearward of the other wheels; a handle attached to the frame which extends upwardly and rearwardly of the rear wheel axis such that a downward force applied to said handle causes the walker-trainer to pivot about the rear wheel axis; and means for immobilizing the walker-trainer when the walker-trainer is pivoted about the rear wheel axis such that when no downward force is applied to the handle the immobilizing means is essentially disengaged so that the walker-trainer moves freely on the wheels, and when a downward force is applied to the handle, the immobilizing means is engaged so that the walker-trainer is substantially immobilized.
Claim 2
Dependent Claim
150 words
A child walker-trainer comprising: a frame having at least three wheels mounted thereon such that the wheels engage a substantially planar walking surface upon which the walker-trainer moves, at least one of the wheels being mounted axially to the frame to form a rear wheel axis rearward of the other wheels; a handle attached to the frame which extends upwardly and rearwardly of the rear wheel axis such that a downward force applied to said handle causes the walker-trainer to pivot about the rear wheel axis; and means for immobilizing the walker-trainer when the walker-trainer is pivoted about the rear wheel axis such that when no downward force is applied to the handle the immobilizing means is essentially disengaged so that the walker-trainer moves freely on the wheels, and when a downward force is applied to the handle, the immobilizing means is engaged so that the walker-trainer is substantially immobilized.
Claim 3
Dependent Claim
60 words
A child walker-trainer as defined in claim 1, further comprising at least two rear wheels mounted axially to the frame to form a rear wheel axis and at least two front wheels mounted axially to the frame forward of said rear wheels such that said front wheels and said rear wheels engage the walking surface upon which the walker-trainer moves.
Claim 4
Dependent Claim
17 words
A child walker-trainer as defined in claim 1, wherein the frame is configured as a push toy.
Claim 5
Dependent Claim
15 words
A child walker-trainer as defined in claim 3, wherein the frame comprises durable molded plastic.
Claim 6
Dependent Claim
42 words
A child walker-trainer as defined in claim 1, wherein the means for immobilizing the walker-trainer comprises a flat skid attached to the frame and extending rearwardly of the rear wheel axis such that said skid is substantially parallel to the walking surface.
Claim 7
Dependent Claim
29 words
A child walker-trainer as defined in claim 5, wherein the skid is shaped in a geometric configuration which does not interfere with the legs and feet of the user.
Claim 8
Dependent Claim
14 words
A child walker-trainer as defined in claim 6, wherein the skid is "U" shaped.
Claim 9
Dependent Claim
20 words
A child walker-trainer as defined in claim 5, wherein the skid has an engaging surface for engaging the planar surface.
Claim 10
Dependent Claim
26 words
A child walker-trainer as defined in claim 8, wherein the engaging surface comprises means for enhancing the friction between the engaging surface and the walking surface.
Claim 11
Dependent Claim
17 words
A child walker-trainer as defined in clam 5, wherein the skid is removably attached to the frame.
Claim 12
Dependent Claim
17 words
A child walker-trainer as defined in clam 5, wherein the skid is removably attached to the frame.
Claim 13
Dependent Claim
32 words
A child walker-trainer as defined in claim 5, wherein weight is added to the frame to counterbalance the weight of the skid such that the walker-trainer rolls freely over the walking surface.
Claim 14
Dependent Claim
19 words
A child walker-trainer as defined in claim 5, further comprising support bars located between the handle and the skid.
Claim 15
Dependent Claim
22 words
A child walker-trainer as defined in claim 1, further comprising at least one secondary handle located between the handle and the frame.
Claim 16
Dependent Claim
23 words
A child walker-trainer as defined in claim 1, further comprising a remote controlled motor to drive and control the movement of the walker-trainer.
Claim 17
Dependent Claim
21 words
A child walker-trainer as defined in claim 10, wherein the handle is removable for easy packing and storage of the walker-trainer.
Claim 18
Dependent Claim
27 words
A child walker-trainer as defined in claim 1, further comprising a cord attached to the frame to permit control over the movement and direction of the walker-trainer.
Claim 19
Dependent Claim
166 words
A child walker-trainer comprising: a frame configured as a push toy having at least two rear wheels mounted axially thereon to form a rear wheel axis and at least one front wheel mounted axially thereon forward of the rear wheels such that the front wheel and the rear wheels engage a substantially planar walking surface upon which the walker-trainer moves; a handle attached to the frame in alignment with the rear wheel axis which extends upwardly and rearwardly of the rear wheel axis, such that a downward force applied to said handle causes the walker-trainer to pivot about the rear wheel axis; and means for immobilizing the walker-trainer when the walker-trainer is pivoted about the rear wheel axis such that when no downward force is applied to the handle the immobilizing means is essentially disengaged so that the walker-trainer moves freely on the wheels, and when a downward force is applied to the handle, the immobilizing means is engaged so that the walker-trainer is substantially immobilized.
Claim 20
Dependent Claim
166 words
A child walker-trainer comprising: a frame configured as a push toy having at least two rear wheels mounted axially thereon to form a rear wheel axis and at least one front wheel mounted axially thereon forward of the rear wheels such that the front wheel and the rear wheels engage a substantially planar walking surface upon which the walker-trainer moves; a handle attached to the frame in alignment with the rear wheel axis which extends upwardly and rearwardly of the rear wheel axis, such that a downward force applied to said handle causes the walker-trainer to pivot about the rear wheel axis; and means for immobilizing the walker-trainer when the walker-trainer is pivoted about the rear wheel axis such that when no downward force is applied to the handle the immobilizing means is essentially disengaged so that the walker-trainer moves freely on the wheels, and when a downward force is applied to the handle, the immobilizing means is engaged so that the walker-trainer is substantially immobilized.
Claim 21
Dependent Claim
42 words
A child walker-trainer as defined in claim 17, wherein the means for immobilizing the walker-trainer comprises a flat skid attached to the frame and extending rearwardly of the rear wheel axis such that said skid is substantially parallel to the walking surface.
Claim 22
Dependent Claim
29 words
A child walker-trainer as defined in claim 18, wherein the skid is shaped in a geometric configuration which does not interfere with the legs and feet of the user.
Claim 23
Dependent Claim
14 words
A child walker-trainer as defined in claim 19, wherein the skid is "U" shaped.
Claim 24
Dependent Claim
20 words
A child walker-trainer as defined in claim 18, wherein the skid has an engaging surface for engaging the walking surface.
Claim 25
Dependent Claim
26 words
A child walker-trainer as defined in claim 21, wherein the engaging surface comprises means for enhancing the friction between the engaging surface and the walking surface.
Claim 26
Dependent Claim
17 words
A child walker-trainer as defined in clam 18, wherein the skid is removably attached to the frame.
Claim 27
Dependent Claim
17 words
A child walker-trainer as defined in clam 18, wherein the skid is removably attached to the frame.
Claim 28
Dependent Claim
33 words
A child walker-trainer as defined in claim 18, wherein weight is added to the frame to counterbalance the weight of the skid such that the walker-trainer will roll freely over the walking surface.
Claim 29
Dependent Claim
19 words
A child walker-trainer as defined in claim 18, further comprising support bars located between the handle and the skid.
Claim 30
Dependent Claim
22 words
A child walker-trainer as defined in claim 17, further comprising at least one secondary handle located between the handle and the frame.
Claim 31
Dependent Claim
23 words
A child walker-trainer as defined in claim 17, further comprising a remote controlled motor to drive and control the movement of the walker-trainer.
Claim 32
Dependent Claim
21 words
A child walker-trainer as defined in claim 17, wherein the handle is removable for easy packing and storage of the walker-trainer.
Claim 33
Dependent Claim
15 words
A child walker-trainer as defined in claim 17, wherein the frame comprises durable molded plastic.
Claim 34
Dependent Claim
38 words
A child walker-trainer as defined in claim 17, further comprising at least two front wheels mounted axially to the frame forward at the rear wheels such that said front wheels and the rear wheels engage the walking surface.
Claim 35
Dependent Claim
27 words
A child walker-trainer as defined in claim 17, further comprising a cord attached to the frame to permit control over the movement and direction of the walker-trainer.
Claim 36
Dependent Claim
187 words
A child walker-trainer comprising: a frame configured as a push toy having at least two rear wheels mounted axially thereon to form a rear wheel axis and at least two front wheels mounted axially thereon forward of the rear wheels such that the front wheels and the rear wheels engage a substantially planar walking surface upon which the walker-trainer moves; a flat skid attached to the frame and extending rearwardly of the rear wheels such that said skid is substantially parallel to the planar surface, said skid being shaped in a geometric configuration which does not interfere with the legs and feet of the user, said skid having an engaging surface for engaging the walking surface; and a handle attached to the frame which extends upwardly and rearwardly of the rear wheel axis such that a downward force applied to said handle causes the walker-trainer to pivot about the rear wheel axis thereby causing the engaging surface of the skid to engage the walking surface and substantially immobilize the walker-trainer, said rear wheels being otherwise free to rotate and roll said walker-trainer freely over the walking surface.
Claim 37
Dependent Claim
187 words
A child walker-trainer comprising: a frame configured as a push toy having at least two rear wheels mounted axially thereon to form a rear wheel axis and at least two front wheels mounted axially thereon forward of the rear wheels such that the front wheels and the rear wheels engage a substantially planar walking surface upon which the walker-trainer moves; a flat skid attached to the frame and extending rearwardly of the rear wheels such that said skid is substantially parallel to the planar surface, said skid being shaped in a geometric configuration which does not interfere with the legs and feet of the user, said skid having an engaging surface for engaging the walking surface; and a handle attached to the frame which extends upwardly and rearwardly of the rear wheel axis such that a downward force applied to said handle causes the walker-trainer to pivot about the rear wheel axis thereby causing the engaging surface of the skid to engage the walking surface and substantially immobilize the walker-trainer, said rear wheels being otherwise free to rotate and roll said walker-trainer freely over the walking surface.
Claim 38
Dependent Claim
14 words
A child walker-trainer as defined in claim 32, wherein the skid is "U" shaped.
Claim 39
Dependent Claim
17 words
A child walker-trainer as defined in clam 32, wherein the skid is removably attached to the frame.
Claim 40
Dependent Claim
17 words
A child walker-trainer as defined in clam 32, wherein the skid is removably attached to the frame.
Claim 41
Dependent Claim
21 words
A child walker-trainer as defined in claim 34, wherein the handle is removable for easy packing and storage of the walker-trainer.
Claim 42
Dependent Claim
33 words
A child walker-trainer as defined in claim 32, wherein weight is added to the frame to counterbalance the weight of the skid such that the walker-trainer will roll freely over the walking surface.
Claim 43
Dependent Claim
19 words
A child walker-trainer as defined in claim 32, further comprising support bars located between the handle and the skid.
Claim 44
Dependent Claim
22 words
A child walker-trainer as defined in claim 32, further comprising at least one secondary handle located between the handle and the frame.
Claim 45
Dependent Claim
23 words
A child walker-trainer as defined in claim 32, further comprising a remote controlled motor to drive and control the movement of the walker-trainer.
Claim 46
Dependent Claim
36 words
A child walker-trainer as defined in claim 32, further comprising means for locking the rear wheels when a downward force is applied to the handle which causes the walker-trainer to pivot about the rear wheel axis.
Claim 47
Dependent Claim
27 words
A child walker-trainer as defined in claim 32, further comprising a cord attached to the frame to permit control over the movement and direction of the walker-trainer.
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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) | 1994-05-06 | 1994-11-05 | 1995-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-06 | 1998-11-05 | 1999-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-06 | 2002-11-05 | 2003-05-07 | $7700.00 | Window Closed / Lapsed |