Method of screening
Abstract
Abstract An improved screen assembly and method of making same employing a frame having an elongated channel or slot extending around the periphery of the opening to be screened. Clips are attached to the screening material and snapped into the longitudinal channel to retain the screening material in the frame. Preferably, the screening material is formed of plastic coated fiberglass or other inextensible, flexible material and preferably the clips are formed of a plastic material having substantial resilience, such as nylon, a polyamide resin sold by E. I. Dupont Company. The clips are provided with integral spring and screening material-engaging portions. Each of these portions provides a part of a means for fastening the clip to the frame. The spring portion resiliently engages the inner surface of the channel (i.e., the surface facing away from the area inclosed by the frame) and thus provides the assembled screen with sufficient resilience to protect the material from destructive forces normal to the screen. The screening material engaging portion of the clip slideably contacts the inner surface of an inwardly projecting lip. This inner surface is substantially parallel to the plane of the screening material, allowing the materialengaging portion of the clip to slide transversely in said channel while retaining the clip in said channel.
Inventors
- 👤 Frank M Le Tarte
Bibliographic Details
Claims Analysis
Total Claims: 5References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |