| Patent Number |
Title Of Patent |
Date Issued |
| 4080980 |
Backflow preventing valve construction |
March 28, 1978 |
| An improved backflow preventing valve having an inlet passage opening to an intermediate chamber via an improved inlet check valve with the intermediate chamber opening to an outlet passage via an improved outlet check valve. A diaphragm chamber communicates with the intermediate cha |
| 4078726 |
Lawn sprinkler |
March 14, 1978 |
| A pop-up sprinkler having a vertically extensible and retractable spray head assembly and means for flushing the channel in which the assembly moves with outflowing water both when the assembly extends and when it retracts, the arrangement permitting the use of a strainer built into the |
| 4067541 |
Water valve operating solenoid |
January 10, 1978 |
| A water valve operating solenoid is disclosed having a unitary housing including a relatively thin plunger tube and a threaded nipple and formed of a non-magnetic plastic material. A coil bobbin having inner reinforcing sleeves is positioned around the plunger tube with a split sleeve bo |
| 4059227 |
Moisture sensing apparatus and method |
November 22, 1977 |
| Method and apparatus for sensing moisture by exposing water in a container to the atmosphere, sensing changes in the volume of the exposed water due to ambient weather conditions, controlling an electrical signal related to the sensed change and controlling the operation of an irrigation |
| 4047367 |
Rotary mower bagging apparatus |
September 13, 1977 |
| Bagging apparatus for a rotary mower in which a grass-catching bag and discharge chute may be detached from the mower in a one-handed operation by the user. A portion of the apparatus connecting the mower housing with the chute and bag also functions as a discharge deflector when the mow |
| 4030277 |
Mower rear shield structure |
June 21, 1977 |
| A rear shield for rotary lawn mowers comprising a body made of strips of rigid and flexible plastic secured together longitudinally in edge to edge relation. Means are provided for suspending the body at the rear of the mower with a rigid portion gravitationally contacting the surface be |
| 4026471 |
Sprinkler systems |
May 31, 1977 |
| Improvements in sprinkler systems having fluid under pressure flowing therethrough and a sprinkler head with a pop-up nozzle actuated by fluid pressure. An impeller is actuated by the fluid flow to rotate the nozzle and thus rotate the spray of fluid threfrom. A transmission is disposed |
| 4015406 |
Lawnmower bagging apparatus |
April 5, 1977 |
| Collection or bagging apparatus for a riding-type lawn mower is disclosed. A substantially rigid top hinged receptacle structure is fastened to the mower frame. A telescoping elongated handle member which cooperates with a bracket to provide a retractable lever for emptying of the recept |
| 3982082 |
Starting system |
September 21, 1976 |
| In a lawn and garden implement, a starting system is provided therefor which prevents accidental energization of the implement, and which also provides for automatic deenergization of the implement upon release thereof by the operator. The starting system includes an actuator lever e |
| 3981446 |
Water operated control apparatus and method |
September 21, 1976 |
| A water operated control apparatus and method for operating a controlled device is associated with moisture sensing apparatus for sensing the level of moisture available at a location and operating the controlled device in response thereto. Moisture sensing means is disposed at the locat |
| 3977163 |
Mower-height-of-cut adjustment mechanism |
August 31, 1976 |
| A height-of-cut adjustment mechanism for use with a lawn mowing machine in which the cutting mechanism is supported by a pair of ground engaging rollers. The mechanism provides rapid and repeatable two position adjustment by means of a spring biased trigger mechanism controlling the |
| 3969871 |
Fastening construction for playground equipment |
July 20, 1976 |
| A basic unit of construction for use in playground equipment and the like, in which timbers are to be interconnected with tubes of smaller diameter. Each timber is cross bored and counter bored at each side to give recesses with substantially flat and parallel bottoms, and beneficial com |
| 3965800 |
Water powered drive for automatic controllers |
June 29, 1976 |
| An automatic irrigation controller apparatus having a cam follower operated bank of pilot valves for operating selected pilot operated water valves throughout a watering or irrigation system is provided with a water powered means for receiving water under pressure from a source thereof a |
| 3955653 |
Rotary mower blade arrester apparatus |
May 11, 1976 |
| Apparatus for rapidly braking the rotary blade of a rotary mower driven by an internal combustion engine. The internal combustion engine has a plurality of passages which lead to its combustion chamber for provision of a fuel-air mixture for combustion in the chamber and for exit of |
| 3949540 |
Mower discharge interlock apparatus |
April 13, 1976 |
| An improved arrangement, for a lawn mower having a closable discharge passage, which comprises a bag, means mounting the bag on the housing and handle of the mower with a portion of the mouth of the bag in apposition with the discharge passage, interlock means for preventing the opening |
| 3942505 |
Lawn mower starting interlock |
March 9, 1976 |
| A lawn mower starting interlock for gas powered mowers for preventing engagement between the starting pinion and flywheel thereof when the mower is in a predetermined condition, for example, when the mower wheel drive mechanism is engaged. A pivotable lever which may be pivoted into the |
| 3940066 |
Pop-up sprinkler head having flow adjustment means |
February 24, 1976 |
| A pressure control mechanism for an irrigation sprinkler having a rotatable riser with an orifice of predetermined shape with the riser sealed at the water inlet end thereof. In one embodiment, a stationary valve ring is snug-fit around the riser and circumferentially stationary with res |
| 3939917 |
Spiker blade |
February 24, 1976 |
| A spiker blade for use on a turf spiker assembly to break and ventilate a ground surface thereby facilitating penetration of air, water and nutrient through the surface. The spiker blade has a tooth profile with a trailing edge having a counterdepression segment. The counterdepression se |
| 3938426 |
Water powered drive for automatic controllers |
February 17, 1976 |
| An automatic irrigation controller apparatus having a cam follower operated bank of pilot valves for operating selected pilot operated water valves throughout a watering or irrigation system is provided with a water powered means for receiving water under pressure from a source thereof a |
| 3930434 |
Hydraulic controller |
January 6, 1976 |
| The hydraulic controller is for controlling the operation of a plurality of hydraulically controlled devices. Hydraulic fluid may be selectively distributed by the controller to various controlled hydraulic devices in a timed and predetermined sequence. The timing of the distribution of |
