Abstract: The present invention relates to oil level visualization system that is used in place of a conventional dipstick to measure oil level. The system may include a strip that has a tube attached thereto comprising an oil absorbent material. Oil from the oil reservoir is configured to absorb to the oil absorbent material and absorbing of the oil to the oil absorbent material is configured to provide a stain on the oil absorbent material visible to the naked eye. The present invention also relates to methods of using the same.

Abstract: The present invention relates to oil level visualization systems. In some embodiments, the system includes an engine comprising an oil reservoir configured to hold oil; a dipstick configured to be disposed in the oil reservoir and measure oil level in the oil reservoir; a strip comprising a front surface comprising an oil absorbent material and a rear surface configured to confront the dipstick; and a fastener configured to removably attach the strip to the dipstick. In other embodiments, a strip comprising an oil absorbent material is provided in place of a conventional dipstick. In both embodiments, oil from the oil reservoir is configured to absorb to the oil absorbent material and absorbing of the oil to the oil absorbent material is configured to provide a stain on the oil absorbent material visible to the naked eye. The present invention also relates to methods of using the same.

Abstract: A heat and energy recovery ventilation unit for a building, having an inside and an outside. The unit including a main body having a fresh air inlet and an indoor air outlet on one side and a fresh air outlet and an indoor air inlet on the other side and having an air to air heat exchanger within the main body and connected to each of said inlets and outlets to define respective air flow passageways for each of said indoor air and said fresh air, the heat exchanger permitting heat and energy exchange between said indoor air and said fresh air. Also included is a first variable speed blower and a second variable speed blower and at least one electronic air flow sensor to measure at least one of the air flows the air flow sensor producing at least one electronic signal related to the sensed air flow.

Abstract: A heat and energy recovery ventilation unit for a building, having an inside and an outside. The unit including a main body having a fresh air inlet and an indoor air outlet on one side and a fresh air outlet and an indoor air inlet on the other side and having an air to air heat exchanger within the main body and connected to each of said inlets and outlets to define respective air flow passageways for each of said indoor air and said fresh air, the heat exchanger permitting heat and energy exchange between said indoor air and said fresh air. Also included is a first variable speed blower and a second variable speed blower and at least one electronic air flow sensor to measure at least one of the air flows the air flow sensor producing at least one electronic signal related to the sensed air flow.

Abstract: A tree step system 100 having a tubing 110; and a step lag screw 130, whereby the tubing 110 may be used as a hammer to drive the step lag screw 130 into a tree 20 and the tubing 110 may further be used for leverage to turn the step lag screw 130 into the tree. The tree step system 100 may include a rod step 150, and an adjustable fastener 170 for adjusting the depth of the adjustable fastener 170 and preventing the tree step system 100 from rotating. The rod step centerline may be offset ninety degrees from the centerline of the step lag screw 130, whereby the offset provides for ease of climbing and entering a tree stand with the proper foot. The tubing 110 may comprise an upper tubing 114 and a lower tubing 124 for ease of installation.

Abstract: A tree step system 100 having a tubing 110; and a step lag screw 130, whereby the tubing 110 may be used as a hammer to drive the step lag screw 130 into a tree 20 and the tubing 110 may further be used for leverage to turn the step lag screw 130 into the tree. The tree step system 100 may include a rod step 150, and an adjustable fastener 170 for adjusting the depth of the adjustable fastener 170 and preventing the tree step system 100 from rotating. The rod step centerline may be offset ninety degrees from the centerline of the step lag screw 130, whereby the offset provides for ease of climbing and entering a tree stand with the proper foot. The tubing 110 may comprise an upper tubing 114 and a lower tubing 124 for ease of installation.

Abstract: A tree step system 100 having a tubing 110; and a step lag screw 130, whereby the tubing 110 may be used as a hammer to drive the step lag screw 130 into a tree 20 and the tubing 110 may further be used for leverage to turn the step lag screw 130 into the tree. The tree step system 100 may include a rod step 150, and an adjustable fastener 170 for adjusting the depth of the adjustable fastener 170 and preventing the tree step system 100 from rotating. The rod step centerline may be offset ninety degrees from the centerline of the step lag screw 130, whereby the offset provides for ease of climbing and entering a tree stand with the proper foot. The tubing 110 may comprise an upper tubing 114 and a lower tubing 124 for ease of installation.

Abstract: A flexural pivot assembly which reduces the number of component parts to five and reduces the number of operations in the manufacturing process is disclosed. The component parts include two sleeves, one inner flexure, one outer flexure, and one slotted tubular core that may be coated with a suitable bonding material. The core has a slotted end and an unslotted end and includes two pairs of diametrically opposed flexure slots each having substantially the same length as a side of a flexure so that the interlocked flexures can slide into the slotted end of the tubular core until they abut an end of the flexure slots and, at the same time, be positioned flush with the slotted end. The core further includes a pair of diametrically opposed travel slots.