Pill centering and cutting apparatus
A pill positioning and cutting apparatus includes a housing a pair of push buttons slidably mounted within a housing and resiliently coordinated with a pair of pill positioning members slidably positioned in a pill support trough to position a pill in the trough for cutting engagement by converging blades which extend from the push buttons.
1 . A pill cutting apparatus comprising:
a pill cutter housing having a pill support trough formed therein by a trough wall having a blade clearing slot formed therethrough;
first and second blade support members slidably supported on the housing in opposed relation, each blade support member having a respective pill cutter blade secured to an inner end and having a respective outer end extending externally from the housing;
a pill positioning mechanism supported within the housing, the pill positioning mechanism being engaged with the blade support members and having a pair of opposed pill positioning members extending into the pill support trough whereby movement of the blade support members toward the converged positions causes coordinated converging movement of the pill positioning members toward the blade clearing slot to thereby position a pill for engagement by the blades in the converged position thereof;
the blade support members being resiliently urged away from respective converged, pill cutting positions and being retained by the housing in released positions thereof, and
the blade support members being positioned to extend the respective blades through the blade clearing slot to the converged positions thereof to thereby cut a pill supported in the pill support trough.
2 . An apparatus as set forth in claim 1 and including:
a rack and pinion mechanism engaged between the blade support members and the pill positioning mechanism which is configured to transfer movement of the blade support members to the pill positioning mechanism to thereby cause coordinated movement thereof with movement of the blade support members.
3 . An apparatus as set forth in claim 2 wherein:
the rack and pinion mechanism is resiliently engaged between the blade support members and the pill positioning mechanism to thereby prevent damage to a pill engaged by the pill positioning members.
4 . An apparatus as set forth in claim 2 wherein the rack and pinion mechanism includes:
a blade pinion gear rotatably engaging the housing;
a pair of blade rack members extending respectively from the blade support members, the blade rack members meshing with the blade pinion gear on diametrically opposite sides thereof;
a pill positioning pinion gear rotatably engaging the housing in axial alignment with the blade pinion gear;
a pair of pill positioning rack members extending respectively from the pill positioning members, the pill positioning rack members meshing with the pill positioning pinion gear on diametrically opposite sides thereof; and
the pill positioning pinion gear engaging the blade pinion gear to thereby transfer movement of the blade support members through the rack and pinion mechanism to the pill positioning members.
5 . An apparatus as set forth in claim 4 wherein:
a torsion spring between the pill positioning pinion gear and the blade pinion gear is configured to cause the pill positioning gear to resiliently follow the blade pinion gear and thereby allow for continued rotation of the pill positioning pinion gear upon a back force presented when a pill is engaged by the pill positioning members.
6 . A pill cutting apparatus comprising:
a pill cutter housing having a pill support trough formed therein by a trough wall having a blade clearing slot formed therethrough;
first and second blade support members slidably supported on the housing in opposed linear relation, each blade support member having a respective pill cutter blade secured to an inner end and having a respective outer end extending externally from the housing;
the blade support members being resiliently urged away from respective converged, pill cutting positions and being retained by the housing in released positions thereof;
a pill positioning mechanism supported within the housing, the pill positioning mechanism being engaged with the blade support members and having a pair of opposed pill positioning members extending into the pill support trough whereby movement of the blade support members toward the converged positions causes coordinated converging movement of the pill positioning members toward the blade clearing slot to thereby position a pill for engagement by the blades in the converged position thereof; and
the blade support members being positioned to extend the respective blades through the blade clearing slot to the converged positions thereof to thereby cut a pill positioned in the pill support trough.
7 . An apparatus as set forth in claim 6 and including:
a rack and pinion mechanism engaged between the blade support members and the pill positioning mechanism which is configured to transfer movement of the blade support members to the pill positioning mechanism to thereby cause coordinated movement thereof with movement of the blade support members.
8 . An apparatus as set forth in claim 7 wherein:
the rack and pinion mechanism is resiliently engaged between the blade support members and the pill positioning mechanism to thereby prevent damage to a pill engaged by the pill positioning members.
9 . An apparatus as set forth in claim 7 wherein the rack and pinion mechanism includes:
a blade pinion gear rotatably engaging the housing;
a pair of blade rack members extending respectively from the blade support members, the blade rack members meshing with the blade pinion gear on diametrically opposite sides thereof;
a pill positioning pinion gear rotatably engaging the housing in axial alignment with the blade pinion gear;
a pair of pill positioning rack members extending respectively from the pill positioning members, the pill positioning rack members meshing with the pill positioning pinion gear on diametrically opposite sides thereof; and
the pill positioning pinion gear engaging the blade pinion gear to thereby transfer movement of the blade support members through the rack and pinion mechanism to the pill positioning members.
10 . An apparatus as set forth in claim 9 wherein:
the pill positioning pinion gear is resiliently engaged with the blade pinion gear to thereby prevent damage to a pill engaged by the pill positioning members.
11 . A pill cutting device comprising:
a housing having a pill receiving area;
a first blade support member supporting a first inwardly directed blade and a second blade support member supporting a second inwardly directed blade, the first blade support member being slidably supported in an opposed linear relation in the housing relative to the second blade support member and a user actuation system enabling the first blade support member being compelled toward the second blade support member;
the first and second blade support members being urged away from the pill receiving area and resisting an actuation force applied by a user by one or more counter-biasing members;
a pill positioning mechanism supported within the housing;
the pill positioning mechanism being engaged with the blade support members and having a first opposed pill positioning member and a second pill positioning member;
the first and second pill positioning members extending into the pill receiving area whereby inward movement of the first and second blade support members causes resilient converging movement of the pill positioning members toward the pill receiving area to position a pill for a cut by the first and second inwardly directed blades.
12 . The device of claim 11 comprising:
a following arrangement causing the first and second pill positioning members, upon an engagement by the user actuation system, to approach and resiliently engage a pill.
13 . The device of claim 12 comprising:
one or more sets of teeth on the direct blade-driving arrangement, the one or more sets of teeth being received by a first pinion rotatable within the device, the first pinion being coaxial with and rotatable relative to a second pinion which is rotatable within the device;
a torsion spring included between the first and second pinions, the torsion spring causing the second pinion, upon receiving rotation of the first pinion, to resiliently follow the first pinion;
one or more second sets of teeth on the pill positioning members, the one or more second sets of teeth being driven by rotation of the second pinion to cause convergence towards the pill receiving area.
14 . The device of claim 13 wherein the torsion spring is included inside the first and second pinions and has inwardly bent end extensions secured into slotted spring collars formed on the inside surfaces of each of the first and second pinions.
15 . The device of claim 13 wherein the torsion spring is an over center torsion spring.
16 . The device of claim 11 wherein the first and second blade support members converge in a direction which is transverse to a direction of convergence executed by the pill positioning members.
17 . The device of claim 16 wherein:
the pill-receiving area includes a trough; and
the first and second pill positioning members are configured to initially engage upper surfaces at each end of a pill prior thus pushing the pill down and centering the pill into the trough prior to a cut made by the first and second inwardly directed blades.
18 . The device of claim 11 comprising:
a removable pill directing cap, the pill directing cap, when installed, configured to receive a pill to be cut into the pill receiving area;
the cap further being configured to allow for a first and a second pieces created after a cut to be retrieved by inverting the device.