Patents
US 9494237 B2: Compressible packing live loading apparatus
- Granted
- 2016-11-15
- Filed
- 2014-05-16 application 14279815
- Type
- Utility · 22 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A live-loading assembly for exerting a sealing force on a compressible packing structure of a fluid handling device, such as a valve or pump, includes a pair of gland bolts each movably extending through opposite end lids of a tubular cartridge and through a Belleville spring stack disposed within the cartridge and bearing on a tubular piston rod having an end portion extending outwardly through one of the lids and having a spring force indicating scale disposed thereon. When packing force adjustment nuts are tightened onto the bolts, to increase the compression force exerted on the packing structures, one of the lids on each cartridge moves along the associated exposed piston rod scale to thereby provide a visual indication of the amount of spring force being created by each tightened nut.
Source: PVGPATDIS, file of 2026-04-10 (ipg161115.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| TEADIT N.A., INC. 7 patents | US company or organization | Pasadena, TX | TEADIT N.A., INC. State business registration EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Jose Carlos Carvalho Veiga | Rio de Janeiro, BR | 7 | PVGPATDIS, file of 2026-04-10 | |
| Carlos Daniel Braga Girao Barroso | Rio de Janeiro, BR | 1 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| F16J | Pistons ; cylinders; sealings | F16J15/186 | PVGPATDIS, file of 2026-04-10 |
| F16K | Valves; taps; cocks; actuating-floats; devices for venting or aerating | F16K41/02 | PVGPATDIS, file of 2026-04-10 |
| Y10T | Technical subjects covered by former us classification | Y10T137/6069 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2014-10-07 | Assignment Assignment of assignor's interest | VEIGA, JOSE CARLOS signed 2014-08-26 BARROSO, CARLOS DANIEL BRAGA GIRAO signed 2014-09-02 | TEADIT N.A., INC. PASADENA, TX | 33905/24 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.