Abstract: A protective card case is described. The case includes a front cover including a transparent viewing area. The case also includes a rear cover including a transparent viewing area. Further, the case includes a coupling mechanism configured for coupling the front cover with the rear cover. Further still the case includes a latching mechanism configured to selectively latch the front cover with the rear cover. The rear cover includes a planar recessed area for holding a card in place when the front cover and rear cover are coupled together by the coupling mechanism and latched with the latching mechanism. The front cover includes an aperture providing access to a portion of the card when front cover and rear cover are coupled together by the coupling mechanism and latched with the latching mechanism and the aperture is at least large enough for a person to apply an autograph to a portion of the front of the card.

Abstract: A novel pump pressure limiting method for preventing coolant in a cooling system from reaching pressures that exceed predetermined system coolant pressure limits. The method includes reducing the system coolant pressure, as needed to prevent system over-pressurization, by reducing the operational speed of a coolant pump used to pump the coolant through the system. In one embodiment, the system coolant pressure is determined directly, by measurement of the pressure of the coolant in the system typically using pressure sensors. The operational speed of the coolant pump is then reduced until the system coolant pressure decreases to within the predetermined pressure limits. In another embodiment, the system pressure is determined indirectly, by obtaining pressure-indicating data such as coolant temperature. The coolant system pressure is then correlated with the coolant temperature or other data and then the operational speed of the coolant pump is reduced accordingly.

Abstract: A novel pump pressure limiting method for preventing coolant in a cooling system from reaching pressures that exceed predetermined system coolant pressure limits. The method includes reducing the system coolant pressure, as needed to prevent system over-pressurization, by reducing the operational speed of a coolant pump used to pump the coolant through the system. In one embodiment, the system coolant pressure is determined directly, by measurement of the pressure of the coolant in the system typically using pressure sensors. The operational speed of the coolant pump is then reduced until the system coolant pressure decreases to within the predetermined pressure limits. In another embodiment, the system pressure is determined indirectly, by obtaining pressure-indicating data such as coolant temperature. The coolant system pressure is then correlated with the coolant temperature or other data and then the operational speed of the coolant pump is reduced accordingly.