Patents Represented by Attorney Daivd W. Anderson

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  • Latching mechanism for overhead projector post
    Patent number: 5281986
    Abstract: An automatic latching mechanism for the post of an overhead projector includes a spring-biased collar slidably disposed on the post and a cam which lifts the collar as the post is raised and releases the collar to engage a retaining tang when the post reaches a position necessary for projection.
    Type: Grant
    Filed: April 2, 1993
    Date of Patent: January 25, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: William J. E. Anton