{
  "abstract": "A vacuum fixture for securing drilling equipment to rough concrete surfaces is disclosed. It addresses the challenge of maintaining a vacuum seal on uneven substrates where conventional fixtures fail. The arrangement incorporates a multi-lip, compliant elastomeric seal (22) designed to conform to surface irregularities. A substantial reserve volume (16) within the vacuum chamber allows for transient air ingress without immediate loss of adhesion. A pressure sensor (30) provides early warning of vacuum degradation, enabling operator intervention before fixture release. For safety and stability, a manual bracing mechanism (36) is integrated to provide a secondary support.",
  "canonical_url": "https://opentechnical.org/p/OT-2026-000000020",
  "categories": [
    "tools-tooling/drilling-tools/vacuum-drill-fixtures",
    "lifting-positioning-manipulation/vacuum-lifting/vacuum-generators"
  ],
  "extent": {
    "figures": 2,
    "paragraphs": 15,
    "words": 2368
  },
  "figures": [
    {
      "caption": "A cross-sectional view of the vacuum fixture attached to a rough surface.",
      "derivative": {
        "file": "figures/fig-001.png",
        "media_type": "image/png",
        "sha256": "0678ee5a460996e6b5cc81c47b74b4bcd781c9babbd7d8d3b9f5f7d02debb001"
      },
      "file": "figures/fig-001.svg",
      "number": "FIG-001",
      "sha256": "e60826e16d54738916701555459bf177b6fb414a0ce8c6be1f92789d3ca9c861"
    },
    {
      "caption": "A block diagram illustrating the functional components of the vacuum fixture system.",
      "derivative": {
        "file": "figures/fig-002.png",
        "media_type": "image/png",
        "sha256": "10db4e68dc08c296cea2e0ecd1ec30189419b3c829bc0969794cd3f70727bd31"
      },
      "file": "figures/fig-002.svg",
      "number": "FIG-002",
      "sha256": "e8942fdb51725380ed939fcf8d8ed06b3eb8dfb441a2fc27a8bfa817369eb126"
    }
  ],
  "files": [
    {
      "bytes": 24463,
      "media_type": "image/png",
      "name": "figures/fig-001.png",
      "sha256": "0678ee5a460996e6b5cc81c47b74b4bcd781c9babbd7d8d3b9f5f7d02debb001"
    },
    {
      "bytes": 9314,
      "media_type": "image/svg+xml",
      "name": "figures/fig-001.svg",
      "sha256": "e60826e16d54738916701555459bf177b6fb414a0ce8c6be1f92789d3ca9c861"
    },
    {
      "bytes": 51031,
      "media_type": "image/png",
      "name": "figures/fig-002.png",
      "sha256": "10db4e68dc08c296cea2e0ecd1ec30189419b3c829bc0969794cd3f70727bd31"
    },
    {
      "bytes": 7863,
      "media_type": "image/svg+xml",
      "name": "figures/fig-002.svg",
      "sha256": "e8942fdb51725380ed939fcf8d8ed06b3eb8dfb441a2fc27a8bfa817369eb126"
    },
    {
      "bytes": 27600,
      "media_type": "text/html; charset=utf-8",
      "name": "index.html",
      "sha256": "47c17ad75c56e43a014e33ac6f7b7fabb6829293087a3131d2da88390b4df90b"
    },
    {
      "bytes": 16724,
      "media_type": "text/markdown; charset=utf-8",
      "name": "publication.md",
      "sha256": "f0685f63ee9356d23bd9d5beccde906073135962800bbc581fa76a5ead163c06"
    },
    {
      "bytes": 16646,
      "media_type": "text/plain; charset=utf-8",
      "name": "publication.txt",
      "sha256": "80ad73cceb4b47e7d16bd1e0b175314edc3f804d3dce87c1823bb9b7f3a99418"
    }
  ],
  "integrity": {
    "hash_algorithm": "sha256",
    "keys_url": "https://opentechnical.org/integrity/keys",
    "record_url": "https://opentechnical.org/p/OT-2026-000000020/integrity",
    "signature_algorithm": "Ed25519",
    "signature_file": "manifest.sig",
    "verify_url": "https://opentechnical.org/integrity/verify"
  },
  "keywords": [
    "vacuum fixture",
    "concrete drilling",
    "compliant seal",
    "leak tolerance",
    "pressure sensing",
    "manual backup",
    "rough surface",
    "vacuum pump",
    "drilling tool",
    "fixture stability"
  ],
  "language": "en",
  "license": {
    "name": "Creative Commons Attribution 4.0 International",
    "url": "https://creativecommons.org/licenses/by/4.0/"
  },
  "publication_id": "OT-2026-000000020",
  "published_at": "2026-09-15T19:01:21.156406Z",
  "publisher": "Nebula Innovations Limited",
  "record_type": "disclosure",
  "schema": "opentechnical-publication-manifest/1.0",
  "supersedes": null,
  "title": "Leak-Tolerant Vacuum Fixture for Rough Surface Drilling",
  "uuid": "01a0a671-f481-7ebf-8071-147dbb08527a"
}