Abstract: The invention provides systems for removably attaching flexible signage to transportable containers, including systems adapted for attaching advertising banners to truck trailers. An aspect of the invention is a support line length adjustment mechanism adapted to be actuated to alternatively shorten and tension a signage sheet support line, and to lengthen and thereby untension the support line, to release the support line and the signage from the container.

Abstract: A sensor for determining liquid level while reducing odor for use in a marine vessel or RV waste holding tank. The sensor includes an aeration tube and a pressure sensor. The aeration tube is disposed in a bottom portion of the holding tank. An aeration pump is in fluid communication with the aeration tube and the pressure sensor and supplies pressurized air to the aeration tube. The aeration tube is disposed in a bottom-most portion of the holding tank and is submerged in sewage. The pressure in the aeration tube is measured by the pressure sensor and the pressure is correlated to liquid level in the waste holding tank. Pressurized air from the aeration pump is injected into the sewage via the aeration tube and creates an oxygen-enriched aerobic environment therein. Air from the holding tank is continuously vented to atmosphere via a vent in the tank.

Abstract: A bubbler liquid level sensing apparatus comprises a liquid storage tank with a vapor region and a fluid region and first and second sensing tubes exposed to the vapor region and fluid region, respectively. A pump with an inlet and an outlet is included, the inlet is pneumatically coupled to the first sensing tube and the outlet is pneumatically coupled to the second sensing tube. First and second controllable valves each have a first input. The first input of the first controllable valve is pneumatically coupled to the first sensing tube and the first input of the second controllable valve is pneumatically coupled to the second sensing tube. The first and second controllable valves each also have a second input pneumatically coupled to the atmosphere, wherein each of the controllable valves has an output that is selectively pneumatically coupled to either the first input or second input of said valve.

Abstract: An implanting gun apparatus (10) is described. A drive rod (23) is linearly moveable in a handle assembly (11) by a first pivotable linkage (16) actuated by a trigger (14), to urge a pellet (101) from a carrier (100) through a head assembly (12) and into a needle (13). A second pivotable linkage (24), also actuated by the trigger, retracts the needle, the head assembly, and the carrier into the handle after the pellet has been urged into the needle. The gun apparatus is particularly adapted to implant pellets in animals, particularly as medicament pellets.

Abstract: An improved automatic pellet carrier (100) fed pellet implanting gun apparatus (10) is described. The carrier is mounted in an opening (12b) through a front side (12c) of a retractable head (12) which is linearly moveable in a nose end (11c) of a handle assembly (11) along a longitudinal axis a--a. The carrier relies upon an internal spring (107) to automatically register a pellet (101) in a bore (12a) in the retractable head so that by actuating a trigger (14), a drive rod (23) which travels linearly along the axis a--a and through the bore in the retractable head and through the carrier, can move the pellet into the barrel (13a) of a needle (13) that has been inserted into an animal or the like. After the pellet enters the needle, the needle, the retractable head and the carrier are mechanically retracted into the gun with the carrier retracting along a slot (11f) in the nose so that the pellet is deposited in the animal, unobstructed by the needle.