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:
Feb. 23, 1988
Filed:
Feb. 24, 1987
Burnell J Wollar, Barrington, IL (US);
Phillips Plastics Corporation, Chippewa Falls, WI (US);
Abstract
A two-piece plastic fastener comprising a body and a screw releasably secures a pair of panels together in spaced apart relationship. The body, which has a bore therethrough, comprises a body shank having a body head, outwardly extending, inwardly depressible, flexible locking tabs spaced from the body head, an external shoulder spaced from the tabs, and outwardly expandable walls spaced from the shoulder. The body shank also comprises, inside the bore, flexible screw thread engaging means and ramp means on the inside of the walls. The screw, which is insertable into the bore, comprises a screw head and a screw shank having a threaded portion and an unthreaded end portion. In use, the body shank is inserted into a hole in the first panel so that the latter is entrapped between the body head and the locking tabs. The body shank is then inserted into the hole in the second panel. The screw is axially inserted into the bore so that its threaded portion engages the thread-engaging means in the bore. The screw is then rotatably advanced so that its unthreaded end portion engages the ramps and effects outward expansion of the body walls thereby entrapping the second panel between the shoulder and the expanded walls. With the screw fully inserted, the threaded portion of the screw shank prevents inward depression of the tabs to thereby lock the first panel in place. Axial withdrawal of the screw from the bore causes the expanded walls to retract and enables withdrawal of the body from the hole in the second panel and also allows the tabs to be depressed to enable withdrawal of the body from the first panel.