Apparatus for detachably fastening a stretchable fabric panel to a rigid frame
US4757854A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 26, 1987 |
| Grant date | Jul 19, 1988 |
| Priority date | — |
| Expiry date | Feb 26, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB44C7/022
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
This invention relates to an improved tongue and groove connector for detachably fastening a stretchable fabric panel to a rigid frame which is characterized by a tongue-forming element attached along a line intermediate the side edges thereof to the panel in face-to-face relation to the latter, the tongue being of a width substantially greater than the groove is deep so as to define an insertable portion to be seated in the groove and a projecting portion extending therebeyond which defines a handhold. The invention also encompasses the novel method of making the aforesaid connection which comprises grasping the handhold to stretch the fabric to a point where the leading edge of the insertable portion lies adjacent the entryway into the groove and thereafter releasing the hold upon the projecting portion of the strap thereby permitting the stretched fabric to pull the insertable portion into seated relation in the bottom of the groove.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.