The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 13, 2007
Filed:
Sep. 16, 2004
Michael Anthony Giugliano, Elgin, IL (US);
Michael Walter Smith, Lake Zurich, IL (US);
Mark Fleydervish, Buffalo Grove, IL (US);
Daniel James Dickinson, Arlington Heights, IL (US);
Joseph William Lowry, Libertyville, IL (US);
Michael Anthony Giugliano, Elgin, IL (US);
Michael Walter Smith, Lake Zurich, IL (US);
Mark Fleydervish, Buffalo Grove, IL (US);
Daniel James Dickinson, Arlington Heights, IL (US);
Joseph William Lowry, Libertyville, IL (US);
Termax Corporation, Lake Zurich, IL (US);
Abstract
A spring fastener characterized by a structure having a cavity in which the rib of a first part, such as a plastic panel for example, like a pillar, may be engaged, and is also suitable to be engaged reversibly in a slot of second part, such as a metal sheet for example, like the frame of a car. The spring fastener comprises engagement springs having a peak, engagement regions and-side cuts in the vicinity of the peak, preferably within the engagement regions. The side-cuts, of preferably triangular shape, increase considerably the lever/angle pulling force (pulling force applied on the first part and away from the spring fastener, in order to separate the first part from a second part connected together with the spring fastener). It is highly preferable that the fastener comprises barbs with inwardly bent front ends, and that the engagement regions further have hindrance portions, the combination of which highly improves the balance of insertion to removal ratio.