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TranePatent grant

Trane was granted a patent for preventing false climate-system power trips

What happened

In September 2026 Trane patented electrical filtering for outdoor HVAC units, helping prevent ground-fault interrupters from shutting down equipment unnecessarily.

Source

Abstract

An embodiment of an outdoor unit of a climate control system includes a refrigerant compressor, an electric motor configured to drive the refrigerant compressor, and a variable frequency drive (VFD) electrically coupled to the electric motor and configured to be electrically coupled to a ground-fault circuit interrupter (GFCI). The GFCI is electrically couped to an electrical power source. The VFD has circuitry that includes an electromagnetic interference (EMI) filter configured to at least partially filter electromagnetic interference generated by the VFD, and an inductive device that is configured to be electrically coupled to the GFCI in parallel with the EMI filter. The inductive device is configured to at least partially dissipate current discharged from the EMI filter in response to a de-energization of the electrical power source, to thereby prevent a trip of the GFCI upon re-energization of the electrical power source.

patents.google.com/patent/US12749641Read the full source

Extracted by Autobound

From the Signal API record
Signal
Patent grant

What this signalsA new patent often shows where a company is putting its R&D budget.

Grant date
Sep 29, 2026
Inventors
John Hughes
Patent number
US12749641
Assignee
TRANE INTERNATIONAL INC.

The full record

From the Signal API record

People

  • John HughesInventor

Details

Primary CPC class
H01H 71/1054
USPTO assignee
TRANE INTERNATIONAL INC.
What the invention does
A climate-control design that filters electrical interference from the variable-speed drive so the safety breaker can distinguish normal operation from a real fault.

Topics and mentions

Tags

  • Intellectual Property
  • Research & Development
  • Engineering
  • Energy / Power
  • Safety

Technologies named

  • HVAC systems
  • variable frequency drives
  • EMI filtering
  • ground-fault protection

Extraction

Detected
Sep 30, 2026
signal_type
patents-company
signal_subtype
patentGrant

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This page shows a preview. The full patents-company record in the Signal API and MCP can also have these 8 fields. Some fields are empty for some signals.

Company

  • linkedin_urlValue in the API
  • industriesValue in the API
  • employee_count_lowValue in the API
  • employee_count_highValue in the API
  • revenueValue in the API
  • descriptionValue in the API

Signal

  • signal_nameValue in the API
  • associationValue in the API
Show the full JSONThe record on this page and the API request

GET /v1/signals/9e55b4c8-2797-5565-94e4-f8acacd210d5 returns this record as JSON. POST /v1/companies/enrich returns every signal for trane.com.

{
  "signal_id": "9e55b4c8-2797-5565-94e4-f8acacd210d5",
  "signal_type": "patents-company",
  "signal_subtype": "patentGrant",
  "detected_at": "2026-09-30T17:29:36+00:00",
  "company": {
    "name": "Trane",
    "domain": "trane.com"
  },
  "data": {
    "cpc": [
      {
        "code": "H01H 71/1054"
      },
      {
        "code": "F25B 49/025"
      },
      {
        "code": "H01H 83/02"
      },
      {
        "code": "F25B 2600/0253"
      },
      {
        "code": "H01H 2231/012"
      }
    ],
    "tags": [
      "Intellectual Property",
      "Research & Development",
      "Engineering",
      "Energy / Power",
      "Safety"
    ],
    "detail": "In September 2026 Trane patented electrical filtering for outdoor HVAC units, helping prevent ground-fault interrupters from shutting down equipment unnecessarily.",
    "summary": "Trane was granted a patent for preventing false climate-system power trips",
    "event_at": "2026-09-29",
    "inventors": [
      {
        "name": "John Hughes",
        "status": "unresolved",
        "is_primary": true
      }
    ],
    "event_kind": "grant_date",
    "grant_date": "2026-09-29",
    "source_url": "https://patents.google.com/patent/US12749641",
    "cpc_primary": {
      "code": "H01H 71/1054"
    },
    "patent_title": "Preventing nuisance trips of ground-fault circuit interruptors electrically coupled to climate control systems",
    "patent_number": "US12749641",
    "uspto_assignee": "TRANE INTERNATIONAL INC.",
    "patent_abstract": "An embodiment of an outdoor unit of a climate control system includes a refrigerant compressor, an electric motor configured to drive the refrigerant compressor, and a variable frequency drive (VFD) electrically coupled to the electric motor and configured to be electrically coupled to a ground-fault circuit interrupter (GFCI). The GFCI is electrically couped to an electrical power source. The VFD has circuitry that includes an electromagnetic interference (EMI) filter configured to at least partially filter electromagnetic interference generated by the VFD, and an inductive device that is configured to be electrically coupled to the GFCI in parallel with the EMI filter. The inductive device is configured to at least partially dissipate current discharged from the EMI filter in response to a de-energization of the electrical power source, to thereby prevent a trip of the GFCI upon re-energization of the electrical power source.",
    "precision_class": "structural",
    "invention_explanation": "A climate-control design that filters electrical interference from the variable-speed drive so the safety breaker can distinguish normal operation from a real fault.",
    "technologies_mentioned": [
      "HVAC systems",
      "variable frequency drives",
      "EMI filtering",
      "ground-fault protection"
    ]
  }
}

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