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Actor Marlon Brando has four patents, all named "Drumhead tensioning device and method."
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| Number | Title | Issue Date |
| 7013812 | Tamping tool The present invention comprises a tamping tool comprising a shank and a blade, with the blade having various arrangements of wear-resistant material affixed to the face of the blade by means of brazing, soldering, gluing or other method. Additionally, some arrangeme... | 03/21/2006 |
| 6978718 | Tamping device and method of tamping a railroad track's ballast A tamping device and method of compacting ballast beneath the intersection of a railroad track's tie and rail utilize a pair of tamping units, each of which terminates in a tool blade. When a pair of tamping unit's first and second tool blades are in ballast on eith... | 12/27/2005 |
| 6968786 | Tamping tool unit for tamping ballast A tamping tool unit for tamping ballast under a respective one of a succession of ties of a railroad track comprises a frame extending in a longitudinal direction, a pair of tamping tool levers mounted on the frame for pivoting about pivot axes in a plane extending ... | 11/29/2005 |
| 6925940 | Tamping tine for a tamping unit A tamping tine for tamping ballast underneath a railroad track has a tine shank and a tine pad attached to the shank. For increasing its abrasion resistance, the tine pad is formed with a pad casing of wear-resistant material. The pad casing is formed with an openin... | 08/09/2005 |
| 6640406 | Railroad clip applicator system A railroad clip applicator system for efficiently securing a fastening clip to a receiver bracket of a crosstie. The railroad clip applicator system includes a housing, a handle structure attached to the housing, an actuator secured within the housing, an... | 11/04/2003 |
| 6622361 | Railroad clip removal system having a pair of arms within a guide slot A railroad clip removal system for efficiently removing a fastening clip from a receiver bracket of a crosstie. The railroad clip removal system includes a frame structure having a center cutout and a pair of opposing slots, an actuator, a pair of engagin... | 09/23/2003 |
| 6581524 | Conversion device for converting a rotational motion into a reciprocal motion A conversion device that is structured to be coupled to the rotating axle of a motor and to an output assembly. The output assembly has an elongated shaft with an axis extending generally perpendicular to the axis of the motor axle. The output assembly fu... | 06/24/2003 |
| 6386114 | Single shaft tamper with reciprocating rotational output A split tool tamper having a motor, a frame, a single tool shaft, and a tamping tool. The motor is coupled to the frame and the tool shaft is coupled to the motor. The tool shaft is further coupled to a single tamping tool.... | 05/14/2002 |
| 4722001 | Self-propelled inspection vehicle A self-propelled inspection vehicle for piping systems includes a vehicle body in the form of a rigid, tightly-sealed housing having forward and rearward end faces as seen in a given insertion direction of the vehicle into the piping, a power supply dispo... | 01/26/1988 |
| 4327645 | Tie tamper The handle of a tie tamper is connected to its vibration generating motor, to which a beater is rigidly fixed to be vibrated thereby, by a combination of a Neidhart damper fixed to one end of the handle, a shackle-link pair fixed at one end to the square ... | 05/04/1982 |
| 4323014 | Tie tamper The handle of a tie tamper is connected to its vibration generating motor, which vibrates a beater fixed thereto, by a combination of a Neidhart damper secured to one end of the handle, a shackle-like link pair fixed at its one end to the damper, and an a... | 04/06/1982 |
