Perpetual calendar
OwnerGideon Daganinventor
Life of this patent
Estimating the term…
Abstract
A perpetual calendar has a free standing or wall hung structure supporting an anchor point and a number of concealed magnets. A pointer magnet is attached by a line to the anchor point. Attraction between the pointer magnet and a selected one of the concealed magnets can support the pointer magnet and line in levitation against gravitational pull. The concealed magnets may be arranged in an arc on the calendar structure, with day, month or year data indicated along the arc at locations corresponding to the concealed magnet locations, so that the line and pointer magnet serve as a visual indicator of selected calendar data. Multiple displays of calendar data may be provided on a calendar structure, including multiple levitated pointer displays or combinations of levitated displays and sliding pointer displays.
Claims23
A perpetual calendar for indicating date information selected from the group consisting of day-of-week, day-of-month and month, said perpetual calendar comprising:
- a structure having a bottom and providing an anchor point on said structure above said bottom and a first plurality of spaced apart datum locations located above said bottom and said anchor point, a first plurality of first magnetic attractors stationary on said structure and each corresponding to only one of said datum locations, first date indicia at each of said datum locations, a second magnetic attractor anchored by a line to said anchor point, said line being shorter than a distance between any of said datum locations and said anchor point but sufficiently long so that said second magnetic attractor is held in static suspension above said anchor point by magnetic attraction if brought into sufficient proximity under any selected one of said first magnetic attractors among said first plurality of magnetic attractors and said line is held taut by said magnetic attraction, so that said line and said second magnetic attractor remain as a visual pointer to said first date indicia at a selected one of said datum locations until displaced from attraction to the selected one of said first magnetic attractors and into sufficient proximity to another one of said first magnetic attractors among said first plurality.
A perpetual calendar comprising:
- a base, a structure supported on said base and including an arcuate portion, and an anchor point above said base and below said arcuate portion, a first plurality of datum locations spaced along said arcuate portion, a plurality of first magnetic attractors stationary on said structure including a first magnetic attractor at each of said datum locations, first date indicia at each of said datum locations, a second magnetic attractor anchored by a line to said anchor point, said line having a length sufficient to bring said second magnetic attractor within magnetic attraction range of any one of said first magnetic attractors so as to hold said second magnetic attractor in levitation above said anchor point against the force of gravity in proximity to any one of said first magnetic attractors with said line held taut above said anchor point by said magnetic attraction thereby to serve with said second magnetic attractor as a visual pointer to said first date indicia at a selected one of said first plurality of datum locations, said second magnetic attractor remaining stationary until displaced into proximity to another first magnetic attractor in said plurality of first magnetic attractors.
A perpetual calendar comprising:
- a structure including a base, at least one arcuate portion above said base and a corresponding anchor point above said base and below said arcuate portion for each said arcuate portion, a plurality of datum locations spaced along each said arcuate portion, a fixed magnetic attractor stationary on said structure at each of said datum locations, date indicia at each of said datum locations, a movable magnetic attractor for each anchor point anchored by a non-rigid line to said corresponding anchor point, each said line having a length sufficient to bring said movable magnetic attractor within magnetic attraction range of any of said corresponding fixed magnetic attractors along said corresponding arcuate portion so that each said line is held taut by said magnetic attraction thereby to serve with said corresponding movable magnetic attractor as a visual pointer to a selected one of said date indicia on said corresponding arcuate portion, each movable magnetic attractor remaining stationary above said corresponding anchor point and below said any of said corresponding fixed magnetic attractor relative to said corresponding arcuate portion in magnetic attraction with any one of said corresponding fixed magnetic attractors until displaced into magnetic attraction with another of said corresponding fixed magnetic attractors.
A perpetual calendar comprising:
- a structure having a bottom and an arc portion, first date indicia at spaced locations along said arc portion, a fixed magnetic attractor stationary on said structure at each of said spaced locations, an anchor point located above said bottom and below said arc portion, an indicator connected by a string to said anchor point, and a selected first movable magnetic attractor in said indicator, said string having a length selected to be held taut above said anchor point by magnetic attraction between a selected said fixed magnetic attractor and said first movable magnetic attractor and thereby provide a static first visual indicator pointing to said first date indicia at a selected one of said spaced locations along said arc portion.
Dependencies are inferred from the claim text.