Bizarre Patents
Pet Toilet-Like Water Disk and Food Storage
One pet-friendly inventor patented "a device for watering pets, e.g., a dog or cat." The device, he helpfully noted, "has the general shape of a toilet."
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| Number | Title | Issue Date |
| 6913449 | Apparatus for the treatment of metallic workpieces with cooling gas In an apparatus for the treatment of metallic workpieces (4) with cooling gas, having a cylindrical housing (3) with an opening at the end face for introducing and removing the workpieces (4), two support plates (6, 7) extending in parall... | 07/05/2005 |
| 6872060 | Pump having a port for drawing air or fluid A pump includes a cylinder housing having a mouth for a fluid to flow out of the housing and a port for the fluid to flow into the housing, a piston slidably engaged in the housing. A tube is coupled to the piston for allowing the fluid to flow out through the tube ... | 03/29/2005 |
| 6821096 | Multiple component metering and dispensing system A plural component pumping apparatus including a piston and cylinder for each component to be pumped. Reciprocation of the piston in the cylinder draws the component into the cylinder during an intake stroke of the pumping apparatus and exhausts the material from th... | 11/23/2004 |
| 6733257 | Dual cylinder apparatus for reciprocal hermetic compressor A dual cylinder apparatus for a reciprocal hermetic compressor with a cylinder body having two open ends. A pair of valve plate units are disposed at both ends of the cylinder body, and have refrigerant discharge holes formed therein. A pair of pistons are movably d... | 05/11/2004 |
| 6497560 | High volume low pressure air pump A high-volume low pressure hand operated air pump comprised of a tube body with a plunger shaft inserted into one end thereof and a check valve at the other end thereof with a floating seal secured to the internal end of the plunger shaft comprised of a c... | 12/24/2002 |
| 6318969 | Floor air pump A floor air pump comprises an outer tube, a pressure leaking device, a pressure gauge, and an air discharge tube. The outer tube is provided with two cylinders different in size from each other. The pressure leaking device is disposed in the lower end of ... | 11/20/2001 |
| 6299420 | Dual action air pump An air pump is a dual action manually driven with a piston and two intake and two exhaust check values that respectively operate with one intake port and one exhaust port. These check valves operate in tandem with each other during each pumping stroke, ei... | 10/09/2001 |
| 6065947 | Two-stroke operable pump A pump includes a main body, a piston slidably received in the main body, and a hose having a first end attached to an end of the main body and a second end attached to the piston. A handle is attached to a piston rod, which, in turn, is attached to the p... | 05/23/2000 |
| 5449278 | Double action piston having plural annular check valves An air pump piston is provided peripherally with a first leakproof ring and a second leakproof ring, which are located respectively and contiguously at both ends of the piston. Located peripherally between the first and the second leakproof rings is a rad... | 09/12/1995 |
| 5443370 | Two cylinder manual air pump An air pump comprises a head; an air guiding tube fastened at one end thereof with the head and at another end thereof with a two-way air admitting piston; a first cylinder fitted over the two-way air admitting piston such that the first cylinder can be c... | 08/22/1995 |
| 5165876 | Tire pump A tire pump comprises a first cylindrical body, a second cylindrical body, a two-way air admission piston, a piston rod, a first one-way valve, a hand grip, a second one-way valve, a third one-way valve, a fourth one-way valve, and an air valve connection... | 11/24/1992 |
| 5102052 | Fluid spray device A manually operable spray pump with a double-action pump and a detachable fluid reservoir. A pump cylinder has valves at each end to admit air into one of two pump chambers formed by a piston and means to simultaneously force air from the other chamber do... | 04/07/1992 |
| 5051073 | Bicycle pump A hand pump having a cylinder and piston in which the piston head is formed with an annular channel having an opening in the base of the annular channel in free communication with the interior of a hollow piston rod. A pair of radially-projecting stops ex... | 09/24/1991 |
| 4313716 | Articulated, energy converting structure An articulated marine structure for an offshore body of water which is subject to wave movement. The structure includes at least two floating elements which are pivotally joined along a common edge to permit relative movement between the respective elemen... | 02/02/1982 |
| 3981625 | Pump with gauge means A pump having a hollow cylinder, and a piston slidably received in the cylinder, with the piston dividing the inside of the cylinder into two chambers. A hollow piston rod has one end connected to the piston and the other end extending out of the cylinder... | 09/21/1976 |
