1. An infusion pump for infusing fluid from a reservoir into a body of a user, the infusion pump comprising:
a housing;
a drive mechanism including a motor and one or more drive components contained within the housing and operatively coupled to the reservoir to deliver fluid from the reservoir through a fluid path into the body of the user;
one or more electronic components to take a series of measurements of a parameter associated with the motor or one of the drive train components; and
a controller contained within the housing, wherein, after each measurement in the series of measurements is taken, the controller performs a comparison between the measurement taken and a predetermined threshold value before the next measurement in the series of measurements is taken, and wherein, if the comparison indicates that the measurement taken is less than the predetermined threshold value, the controller determines that there is no occlusion, and said fluid is delivered to the user’s body.
2. The infusion pump of claim 1, wherein each measurement after the first measurement is taken a predetermined time after the previous measurement.
3. The infusion pump of claim 1, wherein the parameter is force.
4. The infusion pump of claim 1, wherein the one or more electronic components include a sensor to measure force.
5. The infusion pump of claim 1, wherein the one or more electronic components include an encoder to measure motor drive count.
6. The infusion pump of claim 1, wherein the predetermined threshold value is equal to N multiplied by a predetermined conversion value, wherein N is less than 1.0.
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 lubricant composition comprising:
(a) an oil of lubricating viscosity;
(b) one or more dispersants; and
(c) one or more phosphorus compounds;
wherein the kinematic viscosity of the lubricant composition at 100\xb0 C. is greater than 10 mm2s;
wherein the amount by weight of the dispersant is greater than the amount by weights of the phosphorus compounds and any sulfur compounds, which may optionally be present.
2. The lubricant composition of claim 1, wherein dispersants are boronated succinimide dispersant, amideester dispersants, amine dispersants, Mannich dispersants, ester dispersants, dimercptothiadiazole dispersants, or mixtures thereof.
3. The lubricant composition of claim 1, wherein the phosphorus containing compound is dibutyl hydrogen phosphite.
4. The lubricant composition of claim 1, further comprising 2,5-dimercapto-1,3,4-thiadiazole or a derivative of 2,5-dimercapto-1,3,4-thiadiazole.
5. The lubricant composition of claim 1, further comprising a friction modifier.
6. The lubricant composition of claim 5, wherein the friction modifier is borated alkyl epoxides, dialkyl phosphites, glycerol monooleate, pentaerythritol monooleate, amine salts of partial esters of phosphoric acids, zinc salts of fatty acids or mixtures thereof.
7. The lubricant composition of claim 1, further comprising an antioxidant, detergent, corrosion inhibitors, anti-wear agents or mixtures thereof.
8. A method of lubricating final drive axle gearing system comprising:
(a) supplying to said gears
(i) an oil of lubricating viscosity;
(ii) one or more dispersants; and
(iii) one or more phosphorus compounds;
wherein the kinematic viscosity of the lubricant composition at 100\xb0 C. is greater than 10 mm2s; and
wherein the amount by weight of the dispersant is greater than the amount by weight of the phosphorus compounds and any sulfur compounds which may be optionally present.