# US 9,435,997 B2 · Multidimensional rotary motion apparatus moving a reflective surface and method of operating same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,435,997 B2 - Document ID: US9435997B2 - Status: Granted - Kind: B2 - Application number: 13/957,418 - Filed: 2013-08-01 - Published: 2014-06-12 - Granted: 2016-09-06 - Earliest claimed: 2012-08-01 - Assignees: Pentair Water Pool and Spa, Inc. - Applicants: Pentair Water Pool and SPA, Inc. - Inventors: Rakesh Reddy; Bruce Johnson; Kevin Doyle; Gabriel Perez - Web page: https://patentgrep.com/patent/US9435997B2 ## CPC - G02B 26/0816: {by means of one or more reflecting elements} - E04H 4/148: {Lighting means} - F16H 21/02: the movements of two or more independently-moving members being combined into a single movement - F16H 21/54: for conveying or interconverting oscillating or reciprocating motions - G02B 7/1821: {for rotating or oscillating mirrors} - G02B 26/101: {with both horizontal and vertical deflecting means, e.g. raster or XY scanners (colour television using laser beams scanning a display screen H04N9/3129)} - G05G 11/00: Manually-actuated control mechanisms provided with two or more controlling members co-operating with one single controlled member - G03B 29/00: Combinations of cameras, projectors or photographic printing apparatus with non-photographic non-optical apparatus, e.g. clocks or weapons; Cameras having the shape of other objects (combinations with flash apparatus G03B15/03) - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - E04H: BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL (foundations E02D) - F16H: GEARING - G05G: CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY ("Bowden" or like mechanisms F16C1/10; gearings or mechanisms not peculiar to this purpose F16H; speed changing or reversing mechanisms for gearings conveying rotary motion F16H59/00 - F16H63/00) - G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D) ## Abstract A rotary motion controller controlling the motion of a mirror in a projection system is described having a mounting element coupled to a support member. A two-axis coupling is provided with at least two input shafts coupled to two drive mechanisms. A channeled portion is provided in a second of the two input shafts through which the support member extends there through and is guided thereby and where the at least one support member is coupled to the first input shafts via an input coupling coupled to and driving the support member and a control input controlling the position of the at least two input shafts. A method of controlling a mirror in an underwater projection system is also provided along with a method of operating a controller for an underwater projection system and a further embodiment for providing movement of a mirror in an underwater projector. ## Claims ### Claim 1 A motion control system controlling a mirror element within an underwater projection system in a water feature, pool, or spa, the system comprising: a first drive mechanism and a second drive mechanism; a first cam mechanism driven by the first drive mechanism and a second cam mechanism driven by the second drive mechanism; a first input shaft coupled to and driven by the first cam mechanism and a second input shaft coupled to and driven by the second cam mechanism; and a mirror support member having a mirror element thereon coupled to the first input shaft, the mirror support member restrained by a first restraint mechanism so as to move about a moment in a first direction by the first input shaft, the mirror support member also restrained by a second restraint mechanism through the first restraint mechanism, so as to move the mirror support member about a moment in a second direction by the second input shaft acting on the second restraint mechanism through the second cam mechanism and the second drive mechanism, and this movement is imparted in the mirror support member and the mirror element mounted thereon which in turn guides an image from the underwater projection system within the water feature, pool or spa. ### Claim 2 (depends on 1) The system of claim 1, wherein the first restraint mechanism is a hinge and the first input shaft rotates the mirror support member about a hinge pin. ### Claim 3 (depends on 2) The system of claim 2, wherein the second restraint mechanism is a pivot and the second input shaft rotates the mirror support member about a pivot point. ### Claim 4 (depends on 3) The system of claim 3, wherein the first restraint mechanism or the second restraint mechanism results in vertical movement of the mirror element relative to the water feature, pool or spa. ### Claim 5 (depends on 4) The system of claim 4, wherein the first restraint mechanism or the second restraining restraint mechanism results in horizontal movement of the mirror element relative to the water feature, pool or spa. ### Claim 6 (depends on 3) The system of claim 3, wherein the first restraint mechanism or the second restraint mechanism results in vertical movement of the image by the mirror element relative to the water feature, fountain, pool or spa. ### Claim 7 (depends on 3) The system of claim 3, wherein the first restraint mechanism or the second restraint mechanism results in horizontal movement of the mirror element relative to the water feature, fountain, pool or spa. ### Claim 8 (depends on 1) The system of claim 1, further comprising a control input controlling a position of the first and second input shafts and a first sensor and a second sensor tracking a position of the mirror element via relative positions of the first and second input shafts. ### Claim 9 (depends on 1) The system of claim 1, further comprising a low friction spacer and a chassis, wherein the chassis supports the first and second drive mechanisms and the spacer supports the chassis at the second restraining mechanism and eases the movement of the mirror support member about a moment in either the first or second directions. ### Claim 10 (depends on 9) The system of claim 9, wherein the first and second sensors further comprise optical interruption sensors. ### Claim 11 A motion control system controlling a mirror element within an underwater projection system in a water feature, pool, or spa, the system comprising: a base; a first drive mechanism coupled to the base; a second drive mechanism coupled to the base; a first linkage coupled to and driven by the first drive mechanism; a second linkage coupled to and driven by the second drive mechanism; and a mirror support member having a mirror element thereon coupled to the first linkage and the base, wherein the mirror support member is coupled to the base by a first restraint mechanism, which limits the motion imparted on the mirror support member by the first linkage to a first plane, and wherein the second linkage acts upon the second drive mechanism to rotate the base and the mirror support member about a second restraint mechanism in a second plane. ### Claim 12 (depends on 11) The system of claim 11, wherein the first restraint mechanism is a hinge and the mirror support member rotates about a hinge pin. ### Claim 13 (depends on 12) The system of claim 12, wherein the second restraint mechanism is a pivot pin and the base and the mirror support member rotates about an axis of the pivot pin. ### Claim 14 (depends on 13) The system of claim 13, further comprising a low friction spacer positioned between the base and the pivot pin configured to allow the base to rotate in relation to the pivot pin upon actuation of the second drive mechanism. ### Claim 15 (depends on 11) The system of claim 11, further comprising an at least one control input controlling a position of the first linkage and the second linkage and tracking a position of the mirror element via relative positions of the first linkage with a first sensor and the base with a second sensor. ### Claim 16 (depends on 15) The system of claim 15, wherein the first sensor and the second sensor are optical interruption sensors. ### Claim 17 (depends on 11) The system of claim 11, wherein the first restraint mechanism or the second restraint mechanism results in vertical movement of an image by the mirror element relative to the water feature, fountain, pool or spa. ### Claim 18 (depends on 11) The system of claim 11, wherein the first restraint mechanism or the second restraint mechanism results in horizontal movement of the mirror element relative to the water feature, fountain, pool or spa. ### Claim 19 (depends on 11) The system of claim 11, wherein the first plane and the second plane are orthogonal to each other.