Abstract: An object positioning device and method for positioning an object in a desired position relative to another object. In one aspect, the invention provides a device for aligning hitching components used in coupling a trailer to a towing vehicle. The invention also provides an apparatus for positioning an object upheld by a-base over a supporting surface, comprising a plurality of independently adjustable plumb devices associated with the base. This object positioning apparatus is beneficial in adjusting the verticality of a target supported over the coupling on a trailer used in the trailer hitch alignment device of the present invention.

Abstract: A document storage container for holding documents, such as a run ticket or a swimming pool maintenance record, comprises a receptacle having an open-ended cavity defined therein and a removable lid which can be completely separated from the receptacle. Attached to the lid is a document retaining member, such as a clipboard, against which the document can be retained and which is simultaneously moved into the cavity of the receptacle when the lid is placed on the receptacle to close the open end into the cavity and which is simultaneously moved out of the cavity when the lid is removed from the receptacle to open the open end of the cavity.

Abstract: A container for holding a document at a well site comprises a housing having a cavity into which the document can be received. The cavity can be substantially fluid-tightly sealed by a lid appropriately connected to the housing. The housing has a side in which a window is disposed to enable one to determine whether anything is inside the cavity without having to open the lid. The housing has pairs of holes defined therein so that the housing can be connected to well site structures which are disposed at different angles to the ground.

Abstract: An article for thermally insulating an object, such as a valve found at a well site, includes a housing comprising three housing members which are separable from each other to facilitate connection around the object to be insulated. Two of the housing members which protect the main body of the object to be insulated have at least a double-wall construction, which walls are separated by at least one layer of insulation material. When the three housing members are adjoined, they define a cavity or interior hollow region in which the object to be insulated is placed.

Abstract: An electric heating apparatus for providing freeze protection for a fluid-control device, such as a gas regulator, at a well site includes a flexible electric heating pad adapted to be wrapped around the control device to be freeze-protected and a two part thermally insulated housing adapted to be placed about the heating pad and control device when the apparatus is installed. The heating pad is adapted to be energized from a rechargeable battery under the control of a thermostat within the housing which disconnects heating pad from the battery when the temperature in the housing rises above a temperature of about 40.degree. F. A solar panel provides direct current for recharging the battery. A second thermostat disconnects the solar panel from the battery when the ambient temperature rises above about 50.degree. F. to terminate charging of the battery.

Abstract: A container for holding a document at a well site comprises a housing having a cavity into which the document can be received. The cavity can be subtantially fluid-tightly sealed by a lid appropriately connected to the housing. The housing has a side in which a window is disposed to enable one to determine whether anything is inside the cavity without having to open the lid. The housing has pairs of holes defined therein so that the housing can be connected to well site structures which are disposed at different angles to the ground.