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US 4,618,119 AGranted
Adjustable inclination reading/writing board
OwnerRoger A. Powellinventor
Life of this patent
Estimating the term…
Abstract
An adjustable inclination reading/writing board for attachment to a table or desk top. A single operating lever disengages a support member from base strip members on the table top, allowing the inclination of the planar board member to be adjusted.
Claims3
A writing board of adjustable inclination to be used on a table top, comprising:
- a. a planar member having:
- a front face;
- a bottom edge, perpendicular to said front face;
- a rear face, opposed to said front face;
- a first pivotal attachment means on said rear face, adjacent to said bottom edge, having an axis parallel to said bottom edge;
- a second pivotal attachment means on said rear face, having an axis parallel to said first pivotal attachment;
- b. a plurality of base strip members having:
- a third pivotal attachment means at one end, coupled to said first pivotal attachment means on said planar member;
- a bottom face that contacts said table top, having a lip protruding downward, in proximity to said third pivotal attachment means, said lip contacting a vertical face of said table top;
- a top face, opposed to said bottom face, having multiple spaced engagement means;
- c. a prop member coupled to said second pivotal attachment means on said planar member having means for engagement with said multiple spaced engagement means on said base strip members;
- d. disengaging means for simultaneously disengaging all said engagement means between said prop member and said base strip members, whereby the inclination of said planar member may be changed;
- said disengaging means comprising an elongated member attached to said prop member at one end thereof opposite said second pivotal attachment means, an adjustment member having first and second ends and being mounted at said first end to a free end of said elongated member, said adjustment member having a fulcrum disposed thereon between said first and second ends for contacting said table top and having a manual operating surface at said second end.
10 more elements
Dependencies are inferred from the claim text.