Larson Manufacturing Company of South Dakota, Inc.

Larson Manufacturing Company

Bruce E Thomas

Bryan P Zacher

Allen E Lee

Alan M Dixon

Oscar Dale Larson

Kelly D Nordgaard

Frame member for a door assembly

Security door grill

A storm door has first and second elongated, partly curved lock receiving openings formed in respective elongated edges. Each opening is filled in part with a molded hollow insert with an external periphery which matches a periphery of the respective opening. A lock mechanism has a housing with an external periphery that matches, at least in part, an internal periphery of a respective insert. An actuating port in the housing has a central axis, which extends parallel to the respective edge, through the door through which extends a rotatable actuating shaft. An external handle can be attached to the shaft. An unused insert can be closed with a slidably engaging cover.

Door with lockset

An exterior door incorporates at least one moving glass insert or sash slidable in first and second spaced apart tracks. An end of the insert is coupled to an end of a spring biased rolled screen. As the insert moves from the roll, the screen is extracted therefrom providing a continuously variable screened region in the door. The insert can be positioned using a counterbalance or spaced apart latchable locations in the door.

Door with variable length screen

Growing community of inventors

Brookings, SD, United States of America

Bruce E Thomas