File:IBM buckling spring.svg

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Summary

Description
English: Image from U.S. Patent 4,118,611 of buckling spring mechanism
Date
Source U.S. Patent 4,118,611
Author Inventor: Richard Hunter Harris
 
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In general, the contents of United States patents are in the public domain.

In specific cases, patent applicants and holders may claim copyright in portions of those documents. In those specific cases, applicants are required to identify the portions that are protected under copyright, and are additionally required to state the following within the body of the application and patent (see 37 CFR 1.71(d) & (e) and 37 CFR 1.84(s), and MPEP § 608.01(e) & (w) and MPEP § 1512):

A portion of the disclosure of this patent document contains material which is subject to (copyright or mask work) protection. The (copyright or mask work) owner has no objection to the facsimile reproduction by any­one of the patent document or the patent disclosure, as it appears in the Patent and Trademark Office patent file or records, but otherwise reserves all (copyright or mask work) rights whatsoever.

The original patent should be checked for the presence of such language before an assumption is made that the contents are in the public domain. (This template can be replaced by {{PD-US-patent-no notice}} in such cases.)


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3 October 1978

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Date/TimeThumbnailDimensionsUserComment
current01:40, 15 May 2014Thumbnail for version as of 01:40, 15 May 2014733 × 778 (156 KB)BignoseCorrect the representation: the housing does not move, and the distance between the key cap and the housing changes in each diagram.
10:05, 17 September 2013Thumbnail for version as of 10:05, 17 September 2013733 × 778 (155 KB)BignoseGrouped objects better for editing derived works.
02:53, 26 October 2009Thumbnail for version as of 02:53, 26 October 2009733 × 778 (90 KB)Justassfont fix
02:50, 26 October 2009Thumbnail for version as of 02:50, 26 October 2009733 × 778 (90 KB)Justass{{Information |Description={{en|1=Image from {{US patent|4,118,611}} of buckling spring mechanism}} |Source={{US patent|4,118,611}}} |Author=Inventor: Richard Hunter Harris |Date=1978-10-3 |Permission= |other_versions= }} {{validSV
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