{
  "abstract": "The disclosure discloses an oil circuit system, a lifting device, an electric jack, a press, a crane, and a tire mounting/dismounting and transport apparatus. The oil circuit system comprises a lifting oil cylinder, the tank, the first oil feed line, the second oil feed line, the oil inlet/outlet line, the pressure relief line, the oil return line, the first valve, the second valve; the first oil feed line is the gear pump assembly oil feed line; and the second oil feed line is the plunger pump assembly oil feed line. Under no-load or low-pressure conditions of the lifting device, the gear pump assembly can quickly pump a larger volume of low-pressure hydraulic oil, enabling quick lifting or lowering of the lifting device. Under high-pressure conditions, the plunger pump assembly can quickly pump higher pressure hydraulic oil to the lifting oil cylinder to enable slow lifting or lowering.",
  "assignees": [
    "SNIT HYDRAULIC CO LTD"
  ],
  "authors": [
    "LIU YONGQIANG",
    "LI ZHENHAO",
    "XU MANQU",
    "ZHENG HAIFA"
  ],
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    "lifting-positioning-manipulation/lift-tables-and-positioners"
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  "language": "en",
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    "name": "Creative Commons Attribution 4.0 International",
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  "publication_id": "OT-2026-000001929",
  "published_at": "2026-09-15T19:09:35.077853Z",
  "publisher": "Nebula Innovations Limited",
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  "source_date": "2026-03-12",
  "source_id": "US-2026070764-A1",
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  "supersedes": null,
  "title": "Oil circuit system, lifting device, electric jack, press, crane, and tire mounting/dismounting and transport apparatus",
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}