Cornie Folkerts

US Patent:

51232057, Jun 23, 1992

Filed:

Jun 6, 1991

Appl. No.:

7/711205

Inventors:

Cornie Folkerts - Inwood IA

International Classification:

E05C 2102

US Classification:

49465

Abstract:

A closure assembly selectively closes an access opening for an enclosure having walls defining an interior space. The closure assembly includes a pair of hinges mounted to the one wall on opposite sides of the opening, the hinges having aligned apertures therethrough spaced outwardly from the one wall. A rectangular sheet metal door of a size larger than the opening is formed in a generally pyramid configuration having four creases, each extending from the centerpoint to one of the corners of the door. The centerpoint defines an apex of the pyramid configuration. Each side edge of the door between adjacent corners has a downward convex curve. The door is positioned in overlying relationship with the opening to completely cover the same with the apex disposed intermediate the hinges. A cam rod has a central, overcentered cam between opposite end rods rotatably and removably received in the hinge openings and a handle operatively associated with the cam. Rotation of the cam by the handle causes the cam to apply pressure to the apex of the door and through the creases to the curved side edges to provide an even seal of the door about the opening.

US Patent:

45523770, Nov 12, 1985

Filed:

Mar 23, 1984

Appl. No.:

6/592834

Inventors:

Cornie Folkerts - Inwood IA

International Classification:

B60D 106

US Classification:

280515

Abstract:

A device for locking a hitch pin in a tongue hitch including a sleeve around a pivot pin mounted on the tongue. A retainer plate is mounted against the sleeve and pivotable about the pivot pin between a first position clear of the hitch pin and a second position blocking the hitch pin from withdrawal from the hitch connection. Stops are provided on both the tongue and the plate and a spring biases the stops together, in which position the plate is disposed above the hitch pin to lock it in the hitch.