Rolling cart with tiltable frame

{
  "publication_number": "US10279828B2",
  "country": "US",
  "kind": "B2",
  "title": "Rolling cart with tiltable frame",
  "abstract": "A rolling cart has a wheeled frame, telescoping vertically extendable members with glide strips, and a tiltable frame having glide strips interspersed with transfer balls to easily slide slabs or sheet materials for construction such as when installing countertops. A method is also described for measuring a minuend desired install height, subtracting a geometrically predetermined subtrahend, and adjusting the height from a floor surface to a pivot axis on the cart to equal the difference, said adjustment being effected by powered lifting means incorporated or ancillary to the cart.",
  "claims": [
    "1. A slab moving device comprising: a rolling cart; a generally planar frame, tiltably mounted on said cart; said frame tiltable between a horizontal and a vertical position, at least one vertically extendable strut affixed to said rolling cart with said tiltable frame rotatably coupled to said vertically extendable strut so as to define a vertically adjustable pivot axis of said frame, and at least one transit chock spaced apart from at least one of said vertically extendable strut to form a gap of a predetermined width, into which can be received a slab secured to said tiltable frame, such that said transit chock prevents said slab from leaving said vertical position while in said gap.",
    "2. The slab moving device of claim 1, further comprising an operable strut extending mechanism.",
    "3. The slab moving device of claim 2, wherein said operable strut extending mechanism further comprises an extendable member which is also a damping member.",
    "4. The slab moving device of claim 2, wherein said strut extending mechanism is operated by a battery-powered motor.",
    "5. The slab moving device of claim 4, wherein said strut extending mechanism and said battery-powered motor are operated by remote control.",
    "6. The slab moving device of claim 4, wherein said strut extending mechanism and said battery powered motor are controlled by at least one switch.",
    "7. The slab moving device of claim 6, wherein at least one of said at least one switch is affixed to said tiltable frame.",
    "8. The slab moving device of claim 1, wherein said strut extending mechanism comprises a threaded shaft.",
    "9. The slab moving device of claim 8, wherein an end of said threaded shaft comprises a hexagonal cross-section.",
    "10. The slab moving device of claim 1, wherein said tiltable frame is fabricated from tubing in which at least one tube end is capped off by a bumper.",
    "11. The slab moving device of claim 1, further comprising adhesive-backed high-friction material affixed to at least one transit chock.",
    "12. The slab moving device of claim 1, further comprising adhesive-backed high-friction material affixed to said rolling cart.",
    "13. The slab moving device of claim 1, further comprising a plurality of support blocks made of a compliant material affixed to said rolling cart.",
    "14. The slab moving device of claim 1, further comprising at least one extendable member connected between said tiltable frame and said at least one vertically extendable member, wherein said at least one extendable member further comprises a mechanical damper.",
    "15. A slab moving device comprising: a rolling cart; a generally planar frame, tiltably mounted on said cart; said frame tiltable between a horizontal and a vertical position, at least one vertically extendable strut affixed to said rolling cart with said tiltable frame rotatably coupled to said vertically extendable strut so as to define a vertically adjustable pivot axis of said frame, and at least one transit chock spaced apart from at least one of said vertically extendable strut to form a gap of a predetermined width, into which can be received said tiltable frame and a slab secured to said tiltable frame, such that said transit chock prevents said slab from leaving said vertical position while in said gap."
  ],
  "description_excerpt": "A portion of the disclosure of this patent document contains material that is subject to copyright protection. The copyright owner has no objection to the facsimile reproduction by anyone of the patent document or the patent disclosure as it appears in the Patent and Trademark Office patent file or records, but otherwise reserves all copyright rights whatsoever.\n\nThe present disclosure relates in general to rolling carts and more particularly to those specifically capable of securing for transport and accurately positioning fragile or awkwardly-shaped sheet materials.\n\nWheeled platforms and transport carts for various materials have been known since antiquity. Specifically for the field of this invention, carrying heavy, awkward, and fragile slab countertops by hand from a delivery truck, over terrain and obstacles, up steps into a kitchen, and pivoting the slab from a vertical or near vertical position to a horizontal position at a precise and correct height of the receiving cabinet work has long been a burden and a challenge in the slab countertop industry. It would also be useful if such a device were specially sized to navigate easily from a delivery truck to an install site, especially around corners and in residential spaces which are often more narrowly confined or irregularly shaped than industrial or commercial spaces.\n\nVarious devices are currently available which attempt to address these challenges, although many meet only one or two aspects of the totality of the requirements.",
  "cpc": [
    "B62B 3/0612",
    "B62B 2202/62",
    "B62B 2203/10",
    "B62B 2206/00",
    "B62B 2206/003",
    "B62B 2206/06",
    "B62B 3/02",
    "B62B 3/04",
    "B62B 3/08",
    "B62B 3/10",
    "B62B 3/108",
    "B65G 7/00",
    "B65G 7/08",
    "F16B 7/10"
  ],
  "ipc": [
    "B62B 3/02",
    "B62B 3/04",
    "B62B 3/06",
    "B62B 3/08",
    "B62B 3/10",
    "B65G 7/00"
  ],
  "inventors": [
    "Aaron Crowley",
    "Roger Crowley"
  ],
  "filing_date": "2017-07-05",
  "publication_date": "2019-05-07",
  "grant_date": "2019-05-07",
  "priority_date": "2015-07-28",
  "application_number": "US-201715641517-A",
  "family_id": "57886811",
  "cited_by_count": 1,
  "citations": [
    "US3643935A",
    "US4339219A",
    "US5586619A",
    "US5810437A",
    "US20090152224A1",
    "US20120210835A1",
    "US20140332317A1",
    "US20140021691A1"
  ]
}