"That the automobile has practically reached the limit of its development is suggested by the fact that during the past year no improvements of a radical nature have been introduced."
Scientific American ; Jan. 2 edition, 1909
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| Number | Title | Issue Date |
| 7331069 | Water-saving flush toilet A water-saving flush toilet is disclosed. A discharge seal valve is arranged at a sewage discharge port, a discharge seal valve together with a valve cover are arranged at a valve seat. A water tap handle at the lower of the bowl is provided with a lever, a cord is ... | 02/19/2008 |
| 6467101 | Toilet flushing and cleaning device A toilet flushing and cleaning device includes a reservoir with a cylinder and a mixing tube disposed therein. The cylinder communicates with a water source. A plunger is slidably disposed in the cylinder. A plurality of spray nozzles communicate with the... | 10/22/2002 |
| 6332229 | Automated flap and cup cleaner water-saving toilet A gravity drop-toilet uses main water via electronically programmed valves to rinse separate areas of a bowl (71) in sequence via appropriately located and pointing jet orifices (136, 138,140) with about 70% less water than siphon toilets. Electronically ... | 12/25/2001 |
| 5933882 | Lever-actuated flush toilet A flush toilet for a recreational vehicle has a flush mechanism including a lever that can be either depressed to cause a full flush of the toilet, or raised to rinse the bowl only. The lever operates a linkage that is designed so that, even after a parti... | 08/10/1999 |
| 4787103 | Trapless water flush toilet bowl fixture A trapless water flush toilet bowl fixture is disclosed. This fixture has: a water closet cesspool sealing member pivotally supported to shut off a waster water discharge port by impinging from underside upon this port; a sinker imparting a sufficient imp... | 11/29/1988 |
| 4710988 | Flush toilet A flush toilet primarily for use in recreational homes and vehicles is described. A swing drop valve mechanism is used to open and close the outlet of the toilet bowl efficiently and without abrading the seal between the valve and bowl outlet. A flush wat... | 12/08/1987 |
| 4246666 | Flush toilet A flush toilet which includes a concave bowl with a bottom drain port and a closure such as a pan or plate to close the drain port. When a pan is used, it can hold a quantity of water to form a gas seal. When a plate is used, a mechanical seal is employed... | 01/27/1981 |
| 4155129 | Pan type bottom discharge toilet A bottom discharge toilet in which a trap is formed integrally with the toilet base. While the trap plays no role in the flushing action of the toilet itself, it is adapted to receive the discharge from other plumbing fixtures and thereby to serve as a si... | 05/22/1979 |
| 3949431 | Latrines A pit-type latrine with a capability of sealing the escape of odors and the ingress of insects, including a chute and a tippable pan at the lower zone of the chute adapted to contain a quantity of water.... | 04/13/1976 |