Quick connect fluid fitting
US5366262A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 23, 1992 |
| Grant date | Nov 22, 1994 |
| Priority date | — |
| Expiry date | Jul 23, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L37/091
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A quick connect fitting for connecting a plastic or metallic tube (42) in a fluid circuit includes a fitting body (20) having an interior cavity (22) opening to the exterior of the body (20) via a generally circular port (36). A peripheral step (48) is located in the port (36) and an O-ring (50) is abutted against the step (48). A washer (52) is located in the port (36) and has a central opening (54) slightly larger than the outer dimension of the plastic or metallic tube (42). A peripheral flange (56) is disposed on the washer is directed away from the O-ring (50). A retaining ring (62) is disposed in the port (36) and nominally abuts the flange (56). The retaining ring (62) has a central opening (64) substantially greater than the outer dimension with a plurality of resilient, radially inwardly directed, angularly spaced fingers (66). The radially inner ends (70) of the fingers define a tube passage area (68) and are provided with cutting surfaces (72) for digging into the outer surface of the plastic or metallic tube (42). A lock member having a central opening (100) for receiving the plastic or metallic tube (42) is provided and is secured in the port (36) against the retaining…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.