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. 27, 1984
Filed:
Jan. 08, 1982
Russell W Waldo, Mendota Heights, MN (US);
Cardel E Miller, Hudson, WI (US);
Ideal Security Hardware Corporation, Saint Paul, MN (US);
Abstract
The invention of the present application is a guard for limiting the opening of a door (10) with respect to the frame (12) in which it is mounted. The device includes first and second wire forms (14, 42), each having a looped extension portion (38, 46) formed in ends thereof. The looped extensions (38, 46) have apertures (40, 50) defined thereby, which apertures (40, 50) are significantly larger than dimensions of portions (36) of forms (14, 42) received within the apertures (40, 50). A compression spring (52) is disposed intermediate the looped extensions (38, 46) with coils (54, 54', 56) of the spring (52) encircling portions of the forms (14, 42) intermediate the extensions (38, 46).