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US 4,308,678 AGranted
Two-date reminder
OwnerJoel B. Slobininventor
Life of this patent
Estimating the term…
Abstract
The present invention provides a visible reminder of two dates which the user selects by rotatably adjusting at least one pair of concentric discs carrying inner and outer circular date scales which cooperate with corresponding reference marks to designate the selected dates.
Claims10
A two-date reminder comprising:
- a support carrying a wall which presents a fixed reference mark;
- a first disc rotatably mounted behind said wall and carrying a first series of date indicia extending circularly around the rotational axis of said disc, said date indicia being movable visibly in succession past said reference mark when said first disc is turned, whereby said reference mark designates on said first series of date indicia a first date which corresponds to the rotational position to which said first disc is adjusted;
- a second disc rotatably mounted behind said wall coaxial with and independent of the rotational adjustment of said first disc;
- one of said discs carrying a second series of date indicia extending circularly around the rotational axis of the discs concentric with said first series of date indicia;
- and means for visually designating on said second series of date indicia a second date corresponding to the rotational position to which said second disc is adjusted;
- said second disc being located between said wall and said first disc;
- said first disc carrying said second series of date indicia positioned concentric with and radially inward from said first series of date indicia;
- said second disc being transparent and having a reference mark which is selectively registrable with date indicia on said first and second series in accordance with the rotational adjustment of said second disc with respect to said first disc;
- the date indicia of said second series matching the date indicia of said first series at the same locations and being inverted with respect thereto;
- said reference mark on the second disc being registrable with the first series of date indicia on the first disc at the same circumferential side of the latter as said reference mark on said wall of the support;
- and said reference mark on the second disc being registrable with said second series of date indicia on the first disc at the opposite circumferential side of the latter from said reference mark on said wall of the support.
8 more elements
A Two-Date Reminder comprising:
- a support carrying a wall which presents a fixed reference mark;
- a first disc rotatably mounted behind said wall and carrying a first series of date indicia extending circularly around the rotational axis of said disc, said date indicia being movable visibly in succession past said reference mark when said first disc is turned, whereby said reference mark designates on said first series of date indicia a first date which corresponds to the rotational position to which said first disc is adjusted;
- a second disc rotatably mounted behind said wall coaxial with and independent of the rotational adjustment of said first disc;
- one of said discs carrying a second series of date indicia extending circularly around the rotational axis of the discs concentric with said first series of date indicia;
- and means for visually designating on said second series of date indicia a second date corresponding to the rotational position to which said second disc is adjusted;
- said second disc being located between said wall and said first disc and being smaller than said first disc;
- said second disc carrying said second series of date indicia concentric with and radially inward from said first series of date indicia on said first disc;
- said wall of the support carrying a second reference mark spaced from said first-mentioned reference mark;
- and said wall of the support having a window adjacent said second reference mark which is located radially from the rotational axis of said discs the same distance as said second series of date indicia, whereby the latter are visible through said window for registration selectively with said reference mark, depending upon the rotational position of said second disc;
- said first-mentioned reference mark being at the top edge of said wall on the support above the rotational axis of the discs;
- said second reference mark and said window being below the rotational axis of the discs;
- said first series of date indicia having an upright orientation when aligned with said first-mentioned reference mark for readability purposes;
- and said second series of date indicia being inverted relative to said first series of date indicia and having an upright orientation when aligned with said window and said second reference mark for readability purposes.
10 more elements
Dependencies are inferred from the claim text.