A fluid timer configured to receive fluid therein when the timer is in a first orientation and to emit fluid along a timer vertical axis during pre-determined time when the timer is in a second, reversed orientation.

A fluid timer configured to receive fluid therein when the timer is in a first orientation and to emit fluid along a timer vertical axis during pre-determined time when the timer is in a second, reversed orientation.

The invention provides a device (100) for timing that audibly provides an indication of elapsing time. The device being similar to an hourglass, having two containers connected by a central passage and filled with particulates. Wherein one of the containing halves of the device has a recessed portion and sounding surface positioned under the connecting passage, and is arranged to produce sound when its internal surface is struck by a falling particulate.

A defrost or thaw measuring device has a dumbbell or hourglass-shaped rotatable compartment with a cavity, the cavity being partly filled with at least two phase change materials having different melting points. The measuring device may determine the time period of thawing at two or more temperature intervals in the refrigeration space.

A defrost or thaw measuring device has a dumbbell or hourglass-shaped rotatable compartment with a cavity, the cavity being partly filled with at least two phase change materials having different melting points. The measuring device may determine the time period of thawing at two or more temperature intervals in the refrigeration space.

An apparatus for providing negative-pressure therapy may comprise a negative-pressure chamber and a pneumatically-actuated service timer, which can be used to indicate an expiration or other service condition of the apparatus. The apparatus may further comprise an actuator operable to engage a timer fluid with a migration medium. The timer fluid and the migration medium may be selected so that migration time through the migration medium corresponds to an expiration condition of the apparatus. The timer may also provide indicia of migration progress or termination.

A timer is provided, including a base having opposing ends and opposing sides, and first and second opposing side portions extending in a first direct from the opposing ends of the base. Each of the first and second opposing side portions extends to a respective distal end thereof. The timer also includes a top portion connecting the distal ends of the first and second opposing side portions, and front and rear opposing walls extending from the opposing sides of the base. Each of the front and rear opposing walls is connected to the first and second opposing side portions and the top portion to enclose a cavity therein. A center divider is provided extending from top portion at least partially toward the base. The center divider being affixed to the front and rear opposing walls. A first angled portion is affixed to the front and rear opposing walls and is positioned toward the first opposing side portion relative to the center divider. A second angled portion is affixed to the front and rear opposing walls, mirroring the first angled portion toward the second opposing side portion relative to the center divider. The first and second angled portions are positioned in a generally “V”-shaped arrangement with a hole positioned at the vertex thereof.

A timer is provided, including a base having opposing ends and opposing sides, and first and second opposing side portions extending in a first direct from the opposing ends of the base. Each of the first and second opposing side portions extends to a respective distal end thereof. The timer also includes a top portion connecting the distal ends of the first and second opposing side portions, and front and rear opposing walls extending from the opposing sides of the base. Each of the front and rear opposing walls is connected to the first and second opposing side portions and the top portion to enclose a cavity therein. A center divider is provided extending from top portion at least partially toward the base. The center divider being affixed to the front and rear opposing walls. A first angled portion is affixed to the front and rear opposing walls and is positioned toward the first opposing side portion relative to the center divider. A second angled portion is affixed to the front and rear opposing walls, mirroring the first angled portion toward the second opposing side portion relative to the center divider. The first and second angled portions are positioned in a generally “V”-shaped arrangement with a hole positioned at the vertex thereof.

A defrost or thaw measuring device has a dumbbell or hourglass-shaped rotatable compartment with a cavity, the cavity being partly filled with at least two phase change materials having different melting points. The measuring device may determine the time period of thawing at two or more temperature intervals in the refrigeration space.

A defrost or thaw measuring device has a dumbbell or hourglass-shaped rotatable compartment with a cavity, the cavity being partly filled with at least two phase change materials having different melting points. The measuring device may determine the time period of thawing at two or more temperature intervals in the refrigeration space.