US4412689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Folding support frame for stroller or the like
Assignee: Individual
•
Filing: 1981-04-30
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Granted: 1983-11-01
•
Expires: 2001-04-30
Abstract
Abstract An upper U-shaped slide member and a lower U-shaped slide member are slidably coupled to form a generally rectangular framework. For storage, the upper and lower slide members are moved toward each other to reduce the size of the generally rectangular framework. A U-shaped rotating support member is pivotally coupled to said U-shaped slide members. Linkages couple the rotating support member to the lower U-shaped slide member and cause the rotating support member to rotate to a storage position when the lower slide member is slidingly moved with respect to the upper slide member. The linkages also move the rotating support member to a supporting position when the lower slide member is itself extended to a supporting position. Wheels coupled to the rotating support member and/or the lower slide member provide ease of movement of the frame. Extending the upper slide member provides a handle whereby the frame may be maneuvered readily. A load support coupled to the frame permits ready support of loads of varying characteristics, e.g. infant seats or child carriers.
Inventors
- 👤 Byron D. Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:53
CPC Classifications
B; B62; B62B; B62B7/00; B62B7/04; B62B7/06; B62B7/10; B62B2205/00; B62B2205/06; B62B2206/00; B62B7/064; B62B7/066; B62B9/00; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7075; Y10T403/7077; Y10T403/71; Y10T403/7129; Y10T403/7141
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
83 words
A folding support frame comprising: a pair of dual conduit slide means; first and a second U-shaped slide members each slidably coupled to each one of said pair of dual conduit slide members to form a generally rectangular framework of selectedly variable size; and a U-shaped rotating support member pivotally coupled to said pair of dual conduit slide means for rotation at the open end of the U-shaped rotating support member about an axis transverse to said pair of dual conduit slide means.
Claim 2
Dependent Claim
83 words
A folding support frame comprising: a pair of dual conduit slide means; first and a second U-shaped slide members each slidably coupled to each one of said pair of dual conduit slide members to form a generally rectangular framework of selectedly variable size; and a U-shaped rotating support member pivotally coupled to said pair of dual conduit slide means for rotation at the open end of the U-shaped rotating support member about an axis transverse to said pair of dual conduit slide means.
Claim 3
Dependent Claim
48 words
The folding support frame of claim 1 further comprising: U-shaped linkage means pivotally coupled to said U-shaped rotating support member and to said first U-shaped slide member for rotating said U-shaped rotating support member about said transverse axis as said generally rectangular framework is selectedly varied in size.
Claim 4
Dependent Claim
34 words
The folding support frame of claim 2 further comprising wheel means coupled to the open ends of said U-shaped linkage means for easing the passage of said folding support frame across a supporting surface.
Claim 5
Dependent Claim
143 words
A folding support frame comprising: a pair of dual conduit slide means; first and second U-shaped slide members each slidably coupled to each one of said pair of dual conduit slide members to form a generally rectangular framework of selectedly variably size; a U-shaped rotating support member pivotally coupled to said pair of dual conduit slide means for rotation about an axis through said pair of dual conduit slide means and transverse to the longitudinal axis of said generally rectangular framework formed by the coupling of said first and second U-shaped slide members to said pair of dual conduit slide means; and first and second U-shaped linkage members pivotally coupled to said U-shaped rotating support member and to said first U-shaped slide member for rotating said U-shaped support member about said transverse axis as said generally rectangular framewrok is selectedly varied in size.
Claim 6
Dependent Claim
143 words
A folding support frame comprising: a pair of dual conduit slide means; first and second U-shaped slide members each slidably coupled to each one of said pair of dual conduit slide members to form a generally rectangular framework of selectedly variably size; a U-shaped rotating support member pivotally coupled to said pair of dual conduit slide means for rotation about an axis through said pair of dual conduit slide means and transverse to the longitudinal axis of said generally rectangular framework formed by the coupling of said first and second U-shaped slide members to said pair of dual conduit slide means; and first and second U-shaped linkage members pivotally coupled to said U-shaped rotating support member and to said first U-shaped slide member for rotating said U-shaped support member about said transverse axis as said generally rectangular framewrok is selectedly varied in size.
Claim 7
Dependent Claim
77 words
The folding support frame of claim 4 wherein each of said first and second U-shaped linkage members comprise first and second arms said first arms being opposedly pivotally coupled to said U-shaped rotating support member along an axis transverse to the longitudinal axis of said U-shaped rotating support member and said second arms being opposedly pivotally coupled to said first U-shaped slide member along an axis transverse to the longitudinal axis of said first U-shaped slide member.
Claim 8
Dependent Claim
56 words
The folding support frame of claim 5 comprising means coupled to at least one of a pair of said first arms of said first and second U-shaped linkage members and a pair of said second arms of said first and second U-shaped linkage members for easing the movement of said support frame across a supporting surface.
Claim 9
Dependent Claim
25 words
The folding support frame of claim 6 wherein the means for easing the movement of said support frame across a supporting surface comprise wheel means.
Claim 10
Dependent Claim
52 words
The folding support frame of claim 4 further comprising locking means coupled to said first and second U-shaped slide members for fixedly selecting the size of said generally rectangular framework formed by slidingly coupling said first and second U-shaped slide members to each one of said pair of dual conduit slide means.
Claim 11
Dependent Claim
51 words
The folding support frame of claim 4 further comprising load support means coupled to said first and second U-shaped slide members for supporting loads within the generally rectangular framework formed by slidably coupling said first and second U-shaped slide members to each one of said pair of dual conduit slide means.
Claim 12
Dependent Claim
26 words
The folding support frame of claim 9 said load support means comprising means for supporting a child within said first and said second U-shaped slide members.
Claim 13
Dependent Claim
20 words
The folding support frame of claim 10 wherein said means for supporting a child comprises a rigid, molded infant seat.
Claim 14
Dependent Claim
19 words
The folding support frame of claim 10 wherein said means for supporting a child comprises a flexible child carrier.
Claim 15
Dependent Claim
20 words
The folding support frame of claim 10 further comprising wheel means coupled to said first and second U-shaped linkage members.
Claim 16
Dependent Claim
32 words
The folding support frame of claim 13 wherein said means for supporting a child comprises a rigid, molded infant seat having means for inhibiting wheeled movement when said support frame is folded.
Claim 17
Dependent Claim
16 words
The folding support frame of claim 9 wherein said load support means comprises basket support means.
Claim 18
Dependent Claim
16 words
The folding support frame of claim 9 wherein said load support means comprises a saddle carrier.
Claim 19
Dependent Claim
27 words
The folding support frame of claim 9 wherein said load support means comprises at least two support surfaces coupled at approximately right angles one to the other.
Claim 20
Dependent Claim
20 words
The folding support frame of claim 9 further comprising wheel means coupled to said first and second U-shaped linkage members.
Claim 21
Dependent Claim
25 words
The folding support frame of claim 4 further comprising means coupled to said first and said second U-shaped slide members for supporting a display board.
Claim 22
Dependent Claim
29 words
The folding support frame of claim 19 further comprising means coupled to said U-shaped slide members for releasably securing a display board supported by said display board support means.
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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) | 1986-10-31 | 1987-05-02 | 1987-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-31 | 1991-05-02 | 1991-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-31 | 1995-05-02 | 1995-11-01 | $7700.00 | Window Closed / Lapsed |