Captive panel fastener

Patent 4655658 Issued on April 7, 1987. Estimated Expiration Date:

January 2, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

1788750

2368843

2577654

2949143

3062253

3346032

3561093

3571904

Captive panel fastener assembly Patent #: 3995675
Issued on: 12/07/1976
Inventor: Cosenza

Inventor

Gulistan, Bulent

Application

No. 06/815712 filed on 01/02/1986

US Classes:

411/353, Retainer ring29/437, By deforming interlock29/512, By flaring inserted cup or tube end411/337, HEADED FASTENER ELEMENT WITH NUT, WASHER, SECURING MEANS OR CAP411/999, WITH RETAINER (E.G., TETHER)470/49Headed fastener with element, e.g., bolt with nut and washer

Examiners

Primary: Perham, Alfred C.

Attorney, Agent or Firm

Poms, Smith, Lande & Rose

International Class

F16B 41/00 (20060101)

Abstract

A captive panel fastener includes a head, a shank and a threaded outer end, with slots extending longitudinally down through the threads towad the outer end of the fastener. A relatively rigid and inflexible retention washer is provided and this washer has inwardly extending prongs which fit into the longitudinally extending slots on the fastener. The outer end of the fastener has a hole in it, and, after the washer is in place, a forming tool is employed to deform the outer end wall of the opening, so that the wall is pushed outwardly to block the outer ends of the longitudinally extending slots, thereby holding the washer onto the fastener, and retaining it extending through a hole in a panel or the like through which it may have been inserted. A small washer may be employed at the end of the fastener between the ends of the slots and the deformed extreme outer end of the fastener.