Patent ID: 8387617

Claim:
A canister dosage indicator device comprising: (a) a canister holder having a top end and a bottom end, a canister holding portion is disposed at the top end of the canister holder, the canister holding portion is adapted to receive and hold a canister; (b) a diaphragm disposed in the canister holder below the canister holding portion, the diaphragm comprises an upper half diaphragm situated atop a lower half diaphragm, the upper half diaphragm and the lower half diaphragm each have a circular disc shape, the diaphragm can move between multiple positions including a disengaged position wherein the upper half diaphragm and lower half diaphragm of the diaphragm are not compressed together and an engaged position wherein the upper half diaphragm and lower half diaphragm of the diaphragm are compressed together, the diaphragm is biased in the disengaged position, wherein pressing of the canister in the canister holding portion of the canister holder compresses the diaphragm to the engaged position; (c) a first set of electrical contacts disposed all around the periphery on the bottom surface of the upper half diaphragm, and a second set of electrical contacts disposed all around the periphery on the top surface of the lower half diaphragm, the first set of electrical contacts are aligned with the second set of electrical contacts such that movement of the diaphragm from the disengaged position to the engaged position causes the first set of electrical contacts and the second set of electrical contacts to physically contact; (d) a digital counter circuit operatively connected to the first set of electrical contacts and the second set of electrical contacts, the digital counter circuit has a count, the count of the digital counter circuit increases by one when the digital counter circuit receives an input signal from the diaphragm when the diaphragm moves to the engaged position and the sets of electrical contacts physically contact; (e) a display disposed on the canister holder, the display is operatively connected to the digital counter circuit, the display is adapted to display the count of the digital counter circuit; (f) a reset button operatively connected to the digital counter circuit, the reset button when activated is adapted to set the count of the digital counter circuit to zero; and (g) a power source operatively connected to either the first set of electrical contacts, the second set of electrical contacts, the digital counter circuit, or the display.