Patent CA1048727A successfully refreshed from Google Patents.
US3580600A
Expired / Lapsed
US
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Collapsible handtruck
Assignee: Individual
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Filing: 1969-05-07
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Granted: 1971-05-25
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Expires: 1989-05-07
Abstract
Abstract A collapsible handtruck comprises an upwardly extending baseplate to which a lower baseplate is hinged to form a support of generally L-shaped cross section. A pair of wheels are attached to the upwardly extending baseplate. A pantographic member, of the lazy tongs type, has its lower point attached to the center of the upper edge of the upwardly extending baseplate and a handle attached to the upper point. The resulting structure may then be collapsed into a compact bundle for easy storage in the trunk of an automobile.
Inventors
- 👤 Harry B Caplin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:52
CPC Classifications
B; B62; B62B; B62B1/00; B62B1/10; B62B1/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
114 words
A collapsible handcart comprising, rollably supported lower support means, handle means, and pantographic back means for collapsibly intercoupling said handle means and said rollably supported lower support means and for helping to support loads when in the expanded position with the lowermost point of said pantographic means connected substantially to the midpoint near the top of said lower support means with said pantographic means continuously adjustable between a fully collapsed position for storage and an extended position for use with the span between adjacent pivot points on a link of said pantographic means being greater than the height of said lower support means, said handle connected to the upper apex of the pantographic means.
Claim 2
Dependent Claim
114 words
A collapsible handcart comprising, rollably supported lower support means, handle means, and pantographic back means for collapsibly intercoupling said handle means and said rollably supported lower support means and for helping to support loads when in the expanded position with the lowermost point of said pantographic means connected substantially to the midpoint near the top of said lower support means with said pantographic means continuously adjustable between a fully collapsed position for storage and an extended position for use with the span between adjacent pivot points on a link of said pantographic means being greater than the height of said lower support means, said handle connected to the upper apex of the pantographic means.
Claim 3
Dependent Claim
90 words
A collapsible handcart in accordance with claim 1 wherein said rollably supported lower support means comprises, an upwardly extending lower baseplate, a pair of roller means attached to said upwardly extending baseplate, and a foldable baseplate hingeably attached to said upwardly extending baseplate movable to a position substantially at right angles to said upwardly extending baseplate for helping to support a load when said cart is in the expanded position and movable to a position generally parallel to said upwardly extending baseplate when said cart is in the collapsed position.
Claim 4
Dependent Claim
42 words
A collapsible handcart in accordance with claim 2 wherein the lowermost point of said pantographic means is connected to the upper middle of said upwardly extending baseplate and the uppermost point thereof is connected to a lower portion of said handle means.
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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |