# US 4,392,434 A · Turbulent waterway

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 4,392,434 A
- Document ID: US4392434A
- Status: Granted
- Kind: A
- Application number: 06/233,192
- Filed: 1981-02-10
- Granted: 1983-07-12
- Earliest claimed: 1981-02-10
- Assignees: Mannesmann Demag AG
- Inventors: Dierk Durwald; Karl-Ernst Kaufmann
- Web page: https://patentgrep.com/patent/US4392434A

## CPC

- A63G 21/18: Water-chutes
- A63G: MERRY-GO-ROUNDS; SWINGS; ROCKING-HORSES; CHUTES; SWITCHBACKS; SIMILAR DEVICES FOR PUBLIC AMUSEMENT

## Abstract

Disclosed is a turbulent waterway having boats guided in a trough extending between an uphill starting point and a downhill terminus, a chain conveyor having a series of links extending on a slope between said starting point and said terminus and adapted to travel upwardly therebetween, at least one locking bar with transverse grooves is adapted to mesh with the links of said chain conveyor supporting said links for sliding therealong.

## Claims

### Claim 1

In a turbulent waterway having boats guided in a water trough extending between an uphill starting point and a downhill terminus water basin,
(a) a chain conveyor means having a series of links extending on a slope between said starting point and said terminus water basin and adapted to travel upwardly therebetween, said chain conveyor means being substantially comprised of alternating vertically and horizontally oriented chain links, each of which has rounded edges;
(b) the underside of said boats being provided along their length with at least one lengthwise extending locking bar means with transverse grooves adapted to mesh with the horizontally oriented chain links of said chain conveyor;
(c) said chain conveyor means, when moving at a selected speed, serving to initially, upon contact between said chain conveyor means and said locking bar means, pull said boat at a speed less than said selected speed until said boat accelerates to said selected speed whereupon said chain conveyor means meshes with said locking bar means; and
(d) sliding support means for supporting said chain links for sliding therealong, said sliding support means having a vertically oriented groove for guiding said vertically oriented chain links such that said horizontally oriented chain links mesh with said transverse grooves of said locking bar means.

### Claim 2 (depends on 1)

A turbulent waterway in accordance with claim 1, further characterized in that
(a) the locking bar means is made of resilient material.

### Claim 3 (depends on 1)

A turbulent waterway in accordance with claim 1, further characterized in that
(a) said locking bar means defines a gap along its length at approximately the center of the length of the boat.

### Claim 4 (depends on 1)

A turbulent waterway in accordance with claim 1 characterized in that
(a) a pair of locking bar means is arranged in parallel at sides of the boats; and
(b) a pair of chain conveyor means is adapted to engage said locking bar means.

### Claim 5 (depends on 1)

A turbulent waterway in accordance with claim 1, further characterized in that
(a) a central guide means for said boats is provided;
(b) guiding rollers are arranged on said boats to engage said guide means; and
(c) said guide means is disposed parallel with the direction of movement of said chain conveyor means.