# US 9,434,450 B1 · Vibration dampening apparatus for a boat tower > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,434,450 B1 - Document ID: US9434450B1 - Status: Granted - Kind: B1 - Application number: 14/722,986 - Filed: 2015-05-27 - Granted: 2016-09-06 - Earliest claimed: 2015-05-27 - Applicants: Loren Swor - Inventors: Loren Swor - Web page: https://patentgrep.com/patent/US9434450B1 ## CPC - F16F 7/1034: {of movement of a liquid} - B63B 39/02: to decrease vessel movements by displacement of masses - F16F: SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION - B63B: SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING (arrangements of vessel ventilation, heating, cooling, or air-conditioning B63J2/00; floating substructures as supports of dredgers or soil-shifting machines E02F9/06) ## Abstract A boat tower, comprising a support frame comprising a first leg having an upper end and a lower end attachable to a first side of a boat, a second leg having an upper end and a lower end attachable to a second side of the boat, and a cross member extending from the upper end of the first leg to the upper end of the second leg; and a vibration dampening apparatus having a first end, a second end, and a longitudinal axis extending from the first end to the second end, and connected to the support frame in a substantially perpendicular relationship to a vertical plane which laterally bisects the cross member between the first leg and the second leg in a way that the vibration dampening apparatus mitigates lateral vibrations of the tower when the first and second legs are attached to the boat. ## Claims ### Claim 1 A boat tower, comprising: a support frame comprising a first leg, a second leg, and a cross member, the first leg having an upper end and a lower end, the lower end attachable to a first side of a boat, the second leg having an upper end and a lower end, the lower end attachable to a second side of the boat, the cross member extending from the upper end of the first leg to the upper end of the second leg; and a vibration dampening apparatus having a first end, a second end, and a longitudinal axis extending from the first end to the second end, the vibration dampening apparatus connected to the support frame in a substantially perpendicular relationship to a vertical plane which laterally bisects the cross member between the first leg and the second leg in a way that the vibration dampening apparatus mitigates lateral vibrations of the tower when the first and second legs are attached to the boat. ### Claim 2 (depends on 1) The boat tower of claim 1, wherein the vibration dampening apparatus is connected to the support frame at a distance from the first leg and the second leg. ### Claim 3 (depends on 1) The boat tower of claim 1, wherein the upper end of the first leg, the upper end of the second leg, and the cross member form an upper portion of the support frame, and wherein the vibration dampening apparatus is connected to the upper portion of the support frame. ### Claim 4 (depends on 3) The boat tower of claim 3, wherein the vibration dampening apparatus is positioned substantially equidistant between the upper end of the first leg and the upper end of the second leg. ### Claim 5 (depends on 1) The boat tower of claim 1, wherein the cross member is a first substantially horizontal cross member and wherein the support frame further comprises: a third leg having an upper end and a lower end attachable to the boat, a fourth leg having an upper end and a lower end attachable to the boat, a substantially horizontal second cross member extending from the upper end of the third leg to the upper end of the fourth leg, and at least two connecting members extending from the first cross member to the second cross member; wherein the vibration dampening apparatus is connected to the connecting members. ### Claim 6 (depends on 1) The boat tower of claim 1, wherein the vibration dampening apparatus comprises: a tube having a first end, a second end, and a length extending between the first end and the second end; a first shock damper positioned in the tube proximate to the first end of the tube; a second shock damper positioned in the tube proximate to the second end of the tube; and a weight positioned in the tube in a way to be freely moveable along the length of the tube between the first shock damper and the second shock damper. ### Claim 7 (depends on 6) The boat tower of claim 6, wherein the weight is between about eight and about twenty-five pounds. ### Claim 8 (depends on 6) The boat tower of claim 6, wherein the weight is freely moveable along the length of the tube a maximum distance of between about one-quarter of an inch and about three inches. ### Claim 9 (depends on 6) The boat tower of claim 6, wherein the first shock damper is at least one energy absorption device and the second shock damper is at least one energy absorption device. ### Claim 10 (depends on 6) The boat tower of claim 6, wherein the first shock damper is at least one first washer and the second shock damper is at least one second washer. ### Claim 11 (depends on 6) The boat tower of claim 6, wherein the weight has a first end portion with a first diameter, a second end portion with a second diameter, and an intermediate portion between the first end portion and the second end portion, with a third diameter larger than the first diameter and the second diameter, and wherein the first end portion is slidably disposed through the first shock damper and the second end portion is slideably deposed through the second shock damper such that the intermediate portion is moveable between the first shock damper and the second shock damper. ### Claim 12 (depends on 6) The boat tower of claim 6, wherein the vibration dampening apparatus further comprises: a first bearing positioned between the first end of the tube and the first shock damper to slideably support the first end portion; and a second bearing positioned between the second end of the tube and the second shock damper to slideably support the second end portion. ### Claim 13 (depends on 12) The boat tower of claim 12, wherein the tube, the first bearing, and the second bearing share a longitudinal axis. ### Claim 14 (depends on 1) The boat tower of claim 1, wherein the vibration dampening apparatus comprises: a tube having a first end, a second end, and a length extending between the first end and the second end; and a liquid weight positioned in the tube in a way to be freely moveable along the length of the tube between the first end and the second end. ### Claim 15 (depends on 1) The boat tower of claim 1, wherein the vibration dampening apparatus comprises: a tube having a first end, a second end, and a tube length extending between the first end and the second end; a weight positioned within the tube, the weight having a first end and a second end; a first rocker apparatus positioned proximate to the first end of the tube, the first rocker apparatus comprising: a first pin attached to the first end of the tube; and a first connector having a proximate end rotatable about the first pin and a distal end attached to the first end of the weight; and a second rocker apparatus positioned proximate to the second end of the tube, the second rocker apparatus comprising: a second pin attached to the second end of the tube; and a second connector having a proximate end rotatable about the second pin and a distal end attached to the second end of the weight such that the weight is freely movable within the tube. ### Claim 16 A vibration dampening apparatus for a boat tower, comprising: a tube having a first end, a second end, and a tube length extending between the first end and the second end; a first shock damper positioned in the tube proximate to the first end of the tube; a second shock damper positioned in the tube proximate to the second end of the tube; and a weight positioned in the tube in a way to be freely moveable along the length of the tube, the weight having a first end portion with a first diameter, a second end portion with a second diameter, and an intermediate portion between the first end portion and the second end portion, with a third diameter larger than the first diameter and the second diameter, and wherein the first end portion is slidably disposed through the first shock damper and the second end portion is slideably deposed through the second shock damper such that the intermediate portion is moveable between the first shock damper and the second shock damper. ### Claim 17 (depends on 16) The vibration dampening apparatus of claim 16, further comprising: a first bearing positioned between the first end of the tube and the first shock damper to slideably support the first end portion; and a second bearing positioned between the second end of the tube and the second shock damper to slideably support the second end portion. ### Claim 18 (depends on 16) The vibration dampening apparatus of claim 16, wherein the weight is between about eight and about twenty-five pounds. ### Claim 19 (depends on 18) The vibration dampening apparatus of claim 18, wherein the weight is freely moveable along the length of the tube a maximum distance of between about one-quarter of an inch and about three inches. ### Claim 20 (depends on 16) The vibration dampening apparatus of claim 16, wherein the first shock damper is at least one first washer and the second shock damper is at least one second washer. ### Claim 21 A boat tower, comprising: a support frame comprising a first leg, a second leg, and a cross member, the first leg having an upper end and a lower end, the lower end attachable to a first side of a boat, the second leg having an upper end and a lower end, the lower end attachable to a second side of the boat, the cross member extending from the upper end of the first leg to the upper end of the second leg, wherein the cross member comprises a vibration dampening apparatus having a first end and a second end and a length extending from the first end to the second end, such that the vibration dampening apparatus mitigates lateral vibrations of the boat tower when the first and second legs are attached to the boat. ### Claim 22 (depends on 21) The boat tower of claim 21, wherein the vibration dampening apparatus comprises: a first shock damper positioned in the vibration dampening apparatus proximate to the first end of the vibration dampening apparatus; a second shock damper positioned in the vibration dampening apparatus proximate to the second end of the vibration dampening apparatus; and a weight positioned in the vibration dampening apparatus in a way to be freely moveable along the length of the vibration dampening apparatus between the first shock damper and the second shock damper. ### Claim 23 (depends on 22) The boat tower of claim 22, wherein the weight is between about eight and about twenty-five pounds. ### Claim 24 (depends on 22) The boat tower of claim 22, wherein the weight is freely moveable along the length of the vibration dampening apparatus a maximum distance of between about one-quarter of an inch and about three inches. ### Claim 25 (depends on 22) The boat tower of claim 22, wherein the first shock damper is at least one energy absorption device and the second shock damper is at least one energy absorption device. ### Claim 26 (depends on 22) The boat tower of claim 22, wherein the first shock damper is at least one first washer and the second shock damper is at least one second washer. ### Claim 27 (depends on 22) The boat tower of claim 22, wherein the weight has a first end portion with a first diameter, a second end portion with a second diameter, and an intermediate portion between the first end portion and the second end portion, with a third diameter larger than the first diameter and the second diameter, and wherein the first end portion is slidably disposed through the first shock damper and the second end portion is slideably deposed through the second shock damper such that the intermediate portion is moveable between the first shock damper and the second shock damper. ### Claim 28 (depends on 22) The boat tower of claim 22, wherein the vibration dampening apparatus further comprises: a first bearing positioned between the first end of the vibration dampening apparatus and the first shock damper to slideably support the first end portion; and a second bearing positioned between the second end of the vibration dampening apparatus and the second shock damper to slideably support the second end portion. ### Claim 29 (depends on 28) The boat tower of claim 28, wherein the vibration dampening apparatus, the first bearing, and the second bearing share a longitudinal axis. ### Claim 30 (depends on 21) The boat tower of claim 21, wherein the vibration dampening apparatus comprises: a liquid weight positioned in the vibration dampening apparatus in a way to be freely moveable along the length of the vibration dampening apparatus between the first end and the second end of the vibration dampening apparatus.