1. A linear drive mechanism for a compact lightweight tool with a linear actuated working implement, comprising:
a. a tool housing;
b. a geared planetary roller screw disposed inside said tool housing and configured to convert rotary motion from an electric motor to linear movement;
c. an electric motor;
d. a gearbox disposed between said electric motor and said geared planetary roller screw configured to reducing the output rotation of said electric motor;
e. a friction clutch;
f. toggle linkage coupled to clevis and to a working implement, and,
f. an electricity source connected to the electric motor
2. The linear drive mechanism as recited in claim 1, wherein the linear actuated working implement is a pair of cutting blades coupled to said toggle linkage.
3. The linear drive mechanism as recited in claim 1, wherein the electricity source is a rechargeable battery.
4. A tool with a linear actuated working implement, comprising,
a. a tool housing with a front end;
b. geared planetary roller screw disposed inside said tool housing, said roller screw includes:
a fixed outer race axially aligned inside said outer housing, said outer race includes a plurality of internal non-helical grooves;
a plurality of axially aligned grooved rollers radially aligned over the inside surface of said outer race and rotated as a set around said outer race, each said grooved roller includes external non-helical grooves that mesh with said non-helical grooves on said outer race;
a cylindrical nut body axially aligned with and located inside grooved roller bearings, said nut body includes a plurality of external non-helical threads that mesh with said non-helical grooves on said grooved roller, said nut body includes a plurality of internal helical threads, said nut body configured to rotate inside said outer housing and not move longitudinally inside said outer housing;
a plurality of rollers axially aligned and located inside said nut body, each said roller includes external helical threads that mesh with said threads on said nut body, each said roller includes a set gear teeth located at each end that engage two ring gears aligned transversely inside said outer housing with a plurality of teeth that mesh with said gear teeth on said rollers;
a threaded shaft axially aligned with said outer race, said threaded shaft includes a plurality of helical external threads that mesh with said helical threads on said rollers, said threaded shaft includes a proximal end and a distal end;
a torque tube axially aligned with said outer race, said torque tube includes a narrow neck coaxially aligned around said proximal end of said torque shaft and a wide body that at least partially extends around and coupled to said nut body, whereby when said torque tube is rotated, said nut body rotates inside said grooved roller bearings causing said grooved rollers bearings to individually rotate around said threaded shad causing said threaded shaft to move axially with respect to said nut body;
c. an electric motor;
d. gearbox disposed between said distal end of said torque tube and said electric motor and configured to adjust the RPM output from the electric motor;
e. a clevis coupled to said distal end of said threaded shaft;
f. a tool implement linkage coupled to said distal end of said threaded shaft;
g. a linear activated tool implement coupled to said tool implement linkage extending from said front end of said tool; and,
h. an electricity source connected to the electric motor.
5. The tool, as recited in claim 4, wherein said tool implement is a pair of cutting implements extending from said front end of said tool housing, each cutting implement coupled to one said toggle linkage and includes a forward extending blade with a cutting edge configured to cut through material placed transversely in between said blades when pressed together with sufficient longitudinal force created by said roller screw and said electric motor.
6. The tool, as recited in claim 4, wherein said torque tube and said nut body are locked together with a key inserted into a keyway formed between said torque tube and said nut body.
7. The tool, as recited in claim 4 where said tool implement is a pair of cutting jaws that open and close when said threaded shaft moves axially.
8. The tool, as recited in claim 4 where said tool implement is a pair of spreader jaws that open and close when said threaded shaft moves axially.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A sensor strip comprising:
(a) a base layer having a first major surface and a second major surface;
(b) a cover layer having a first major surface and a second major surface, the first major surface of said cover layer facing the first major surface of said base layer;
(c) a spacer layer interposed between the first major surface of said cover layer and the first major surface of said base layer to separate said cover layer from said base layer;
(d) a flow channel having walls formed by said first major surface of said cover layer, said first major surface of said base layer, and said spacer layer, said flow channel having a reaction site therein, wherein said reaction site includes an electrode arrangement, said flow channel being of such dimensions that a liquid sample can be drawn therein and can flow therethrough by means of capillary attraction;
(e) a flow-terminating interface applied to or formed in said first major surface of said cover layer, said flow-terminating interface capable of terminating flow of a sample of liquid in said flow channel at said flow-terminating interface;
(f) a sample application zone, where a liquid sample is introduced into said flow channel; and
(g) at least one opening communicating with said flow channel to allow gas to be vented from said flow channel.
2. The sensor strip of claim 1, wherein said electrode arrangement comprises a working electrode and a dual-purpose reference electrodecounter electrode.
3. The sensor strip of claim 2, wherein said electrode arrangement further includes a trigger electrode.
4. The sensor strip of claim 2, wherein said electrode arrangement further includes a reagent system on at least said working electrode.
5. The sensor strip of claim 4, wherein said reagent system comprises an enzyme and a mediator for said enzyme.
6. The sensor strip of claim 1, wherein said electrode arrangement comprises a working electrode, a counter electrode, and a reference electrode.
7. The sensor strip of claim 6, wherein said electrode arrangement further includes a trigger electrode.
8. The sensor strip of claim 6, wherein said electrode arrangement further includes a reagent system on at least said working electrode.
9. The sensor strip of claim 8, wherein said reagent system comprises an enzyme and a mediator for said enzyme.
10. The sensor strip of claim 1, wherein said at least one opening is formed in said spacer layer.
11. The sensor strip of claim 1, wherein said at least one opening is formed in said cover layer.
12. The sensor strip of claim 1, wherein said spacer layer comprises a layer of adhesive.
13. The sensor strip of claim 12, wherein said adhesive is formed from a radiation-curable adhesive.
14. The sensor strip of claim 12, wherein said adhesive is formed from a water-borne adhesive or a solvent-borne adhesive.
15. The sensor strip of claim 1, wherein said spacer layer comprises a backing having a layer of adhesive on both major surfaces thereof.
16. The sensor strip of claim 1, wherein said flow-terminating interface is a hydrophilichydrophobic interface.
17. The sensor strip of claim 16, wherein said hydrophilichydrophobic interface comprises a layer of hydrophobic material having a coating of hydrophilic material thereon, a portion of said hydrophilic material being removed to expose said hydrophobic material to said liquid in said flow channel.
18. The sensor strip of claim 16, wherein said hydrophilichydrophobic interface comprises a layer of hydrophilic material having a coating of hydrophobic material thereon, a portion of said hydrophobic material being removed to expose said hydrophilic material to said liquid in said flow channel.
19. The sensor strip of claim 1 wherein said first major surface of said cover layer comprises a hydrophilic material having a hydrophobic coating applied to a portion thereof.
20. The sensor strip of claim 1, wherein said first major surface of said cover layer comprises a hydrophobic material having a hydrophilic coating applied to a portion thereof.
21. The sensor strip of claim 1, wherein said flow-terminating interface comprises a plurality of openings in said cover layer.
22. The sensor strip of claim 1, wherein at least one dimension of said flow channel at said flow-terminating interface is of sufficient size that the force attributable to capillary attraction is insufficient to permit additional fluid to enter said flow channel.
23. A device for allowing the flow of a liquid and for terminating the flow of said liquid, said device comprising;
(a) a flow channel bounded by a wall, said flow channel having dimensions to allow a liquid to flow by capillary attraction; and
(b) a flow-terminating interface to terminate the flow of said liquid in said flow channel at said flow-terminating interface, wherein said flow-terminating interface comprises a plurality of openings in said wall of said flow channel.