Automatically operated gate valve for recreational vehicles
First Claim
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1. An external hydraulic device for operating a gate valve in a drainage line of a holding tank of a recreational vehicle comprising:
- a. a support plate;
b. means for fastening said support plate to said drainage linec. a hydraulic cylinder comprising a housing and a hydraulic rod;
d. means for attaching said hydraulic cylinder housing to said support plate;
e. a pivot arm having a first and second end and a pivoting means therebetween;
f. means for securing said pivot arm at said first end to said hydraulic rod;
g. means for securing said pivot arm at said second end to a control rod of said gate valve;
h. means for securing said pivoting means of said pivot arm to said support plate; and
i. means for operating said hydraulic cylinder.
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Abstract
This invention is a hydraulic device for operating a gate valve in the drainage line of a recreational vehicle. The device consists of a support plate mounted to the gate valve or drainage line. A hydraulic cylinder with a hydraulic rod is pivotally mounted to the support plate. The hydraulic rod is attached to the gate control rod by means of a pivot arm that is also pivotally attached to the support plate. The device is operating by means of a hydraulic pump, a motor and control means for operating the motor, typically an electrical switch.
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Citations
28 Claims
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1. An external hydraulic device for operating a gate valve in a drainage line of a holding tank of a recreational vehicle comprising:
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a. a support plate; b. means for fastening said support plate to said drainage line c. a hydraulic cylinder comprising a housing and a hydraulic rod; d. means for attaching said hydraulic cylinder housing to said support plate; e. a pivot arm having a first and second end and a pivoting means therebetween; f. means for securing said pivot arm at said first end to said hydraulic rod; g. means for securing said pivot arm at said second end to a control rod of said gate valve; h. means for securing said pivoting means of said pivot arm to said support plate; and i. means for operating said hydraulic cylinder. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. The hydraulic device for operating a gate valve according to claim further comprising a disconnect means whereby said hydraulic cylinder is disconnected from said gate valve for manual operation of said gate valve.
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18. A hydraulic device for opening, closing or holding a holding-tank gate valve in any position wherein said gate valve is located in a passage connected to a holding tank of a recreational vehicle and comprising:
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a. a hydraulic cylinder comprising a housing and a hydraulic rod projecting therefrom; b. means for connecting said hydraulic rod to a gate of said gate valve; and c. hydraulic means for controlling the position of said hydraulic rod into or out of said hydraulic cylinder comprising a hydraulic pump for pumping a fluid into or out of said hydraulic cylinder housing so as to cause said hydraulic rod to move into or out of said cylinder housing. - View Dependent Claims (25, 26, 27)
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19. The hydraulic device for opening, closing or holding a holding-tank gate valve in any position according to claim 19 with said means for controlling the position of said hydraulic rod into or out of said hydraulic cylinder further comprising:
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a. a motor for operating said hydraulic pump and b. switch means for operating said motor. - View Dependent Claims (20, 21, 22, 23, 24)
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28. An external hydraulic device for operating a gate valve in the drainage line of a holding tank of a recreational vehicle comprising:
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a. a support plate; b. means for fastening a support plate on the outside of a housing of said gate valve; c. a hydraulic cylinder comprising a housing and a hydraulic rod; d. means for attaching said hydraulic cylinder housing to said support plate; e. a pivot arm having a first and a second end and a pivoting means therebetween; f. means for securing said pivot arm at said first end to said hydraulic rod; g. means for securing said pivot arm at said second end to a control rod of said gate valve; h. means for securing said pivoting means of said pivot arm to said support plate; and i. means for operating said hydraulic cylinder.
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Specification