Patents by Inventor Raymond Jeffrey Dufty
Raymond Jeffrey Dufty has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10842064Abstract: A rolling assembly, the rolling assembly including: a body; one or more surface rollers rotatable with respect to the body; and at least one rotatable sweeping device including: an elongate member rotatable with respect to the body; and a sweeping head located over the elongate member and rotatable with respect to the elongate member, wherein the sweeping head is configured to engage with the one or more surface rollers such that the rotation of the one or more surface rollers rotates the sweeping head.Type: GrantFiled: June 16, 2016Date of Patent: November 24, 2020Inventors: Dorothea Isabel Maud Rix, Raymond Jeffrey Dufty
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Patent number: 10362737Abstract: A roller assembly including: a frame; a first undercarriage connected to the frame, the first undercarriage comprising: a first body; a rear roller connected to the first body; and a first overlapping roller that is elongate and connected to the first body; and a second undercarriage connected to the frame, the second undercarriage comprising: a second body; a front roller connected to the second body; and a second overlapping roller that is elongate and connected to the second body, wherein the first undercarriage is positioned adjacent to the second undercarriage such that the first overlapping roller overlaps the second overlapping roller.Type: GrantFiled: August 8, 2016Date of Patent: July 30, 2019Inventors: Dorothea Isabel Maud Rix, Raymond Jeffrey Dufty
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Patent number: 9918421Abstract: A spiker roller having (i) a roller assembly having a plurality of roller components each having a peripheral wall and a plurality of apertures in each wall and a centrally located hub or boss surrounding an opening; (ii) a multiplicity of spikes which are each releasably retained within a respective aperture of each roller component; and (iii) a support shaft which is insertable through each of the openings of each roller component wherein in operation each of the roller components rotate independently of each other.Type: GrantFiled: March 18, 2013Date of Patent: March 20, 2018Assignee: TRU-TURF PTY LTD.Inventor: Raymond Jeffrey Dufty
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Publication number: 20150075825Abstract: A spiker roller having (i) a roller assembly having a plurality of roller components each having a peripheral wall and a plurality of apertures in each wall and a centrally located hub or boss surrounding an opening; (ii) a multiplicity of spikes which are each releasably retained within a respective aperture of each roller component; and (iii) a support shaft which is insertable through each of the openings of each roller component wherein in operation each of the roller components rotate independently of each other.Type: ApplicationFiled: March 18, 2013Publication date: March 19, 2015Inventor: Raymond Jeffrey Dufty
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Publication number: 20140014379Abstract: An idler roller assembly having a roller tube which has a constant diameter throughout its length and does not have machined ends or ends formed with integrally formed flanges. An end cap is attached to each end of the roller tube which has a hollow internal bore and an outer seal insert retained within the hollow internal bore of the end cap and having an internal recess and adapted for rotation with the roller tube and end cap. A stationary inner seal is located in the recess and having a flexible lip. Also included is a bearing retained within the internal bore of the end cap as well as a stationary shaft extending through a hollow interior of the roller tube wherein the inner seal is fixed to the stationary shaft. There is also provided an inner fastening member retaining the bearing in position within the end cap.Type: ApplicationFiled: July 10, 2012Publication date: January 16, 2014Inventor: Raymond Jeffrey Dufty
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Patent number: 8499849Abstract: A roller cleaning assembly for a grass processing apparatus, such as a grass or turf roller, has a roller housing releasably mountable in a hollow cavity in the body of a smoothing head, where the smoothing head contains idler or smoothing rollers. A pair of roller brushes is rotatably journalled in the roller housing, and are driven by the idler or smoothing rollers via friction drive rollers. Each brush roller has at least one spiral brush and/or spiral wiper blade to clean the external surfaces of the adjacent idler or smoothing rollers and deposits the clippings or other waste in collector sections in the roller housing.Type: GrantFiled: April 16, 2012Date of Patent: August 6, 2013Assignee: Tru-Turf Pty Ltd.Inventor: Raymond Jeffrey Dufty
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Patent number: 7997826Abstract: A roller assembly adapted to follow ground contours during operation which includes a pair of roller components each having respective inner ends connected to each other by a flexible and movable primary coupling and having their respective outer ends connected to a support shaft which extends through a hollow interior of each roller component by a secondary coupling.Type: GrantFiled: May 1, 2009Date of Patent: August 16, 2011Assignee: Tru-Turf Pty LtdInventor: Raymond Jeffrey Dufty
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Patent number: 7934886Abstract: Rolling apparatus for rolling of turf or grass surfaces is provided which includes a mobile main frame (11) and at least three undercarriages (61, 62, 63) attached to the main frame (11). Each undercarriage has one or more smoothing rollers (64) in the form of idler rollers; there is further provided a control frame for each of the undercarriages (61, 62, 63) pivotally mounted to each undercarriage with one (63) of the at least three undercarriages located rearwardly or forwardly of the other two (61, 62) undercarriages in a direction of travel of the rolling apparatus. In the direction of travel, each undercarriage is located adjacent to each other presenting substantially no gaps in a front view between adjoining undercarriages or smoothing rollers attached to the undercarriages.Type: GrantFiled: February 8, 2007Date of Patent: May 3, 2011Assignee: Tru Turf Pty LtdInventor: Raymond Jeffrey Dufty
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Publication number: 20090238644Abstract: A roller assembly adapted to follow ground contours during operation which includes a pair of roller components each having respective inner ends connected to each other by a flexible and movable primary coupling and having their respective outer ends connected to a support shaft which extends through a hollow interior of each roller component by a secondary coupling.Type: ApplicationFiled: May 1, 2009Publication date: September 24, 2009Applicant: TRU-TURF PTY LTDInventor: Raymond Jeffrey Dufty
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Publication number: 20090129865Abstract: Rolling apparatus for rolling of turf or grass surfaces is provided which includes a mobile main frame (11) and at least three undercarriages (61, 62, 63) attached to the main frame (11). Each undercarriage has one or more smoothing rollers (64) in the form of idler rollers; there is further provided a control frame for each of the undercarriages (61, 62, 63) pivotally mounted to each undercarriage with one (63) of the at least three undercarriages located rearwardly or forwardly of the other two (61, 62) undercarriages in a direction of travel of the rolling apparatus. In the direction of travel, each undercarriage is located adjacent to each other presenting substantially no gaps in a front view between adjoining undercarriages or smoothing rollers attached to the undercarriages.Type: ApplicationFiled: February 8, 2007Publication date: May 21, 2009Inventor: Raymond Jeffrey Dufty
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Patent number: 6840543Abstract: There is provided a trailer (65) having a trailer frame (68) supported by ground engaging wheels (84). A pivot frame (69) is pivotally attached to the trailer frame (68) by pivot attachment means (72). The pivot frame (69) is attachable to maintenance apparatus such as a mower (100) in use. There is also provided connection means such as a drawbar (70) to a prime mover.Type: GrantFiled: December 26, 2001Date of Patent: January 11, 2005Assignee: Forestfield PTY Ltd.Inventor: Raymond Jeffrey Dufty
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Patent number: 6712155Abstract: Carriage (10) attachable to a prime mover (41) for travel over turf or grass wherein the carriage (10) has idler rollers (12, 13 and 14) and a ground aeration mechanism in the form of a support axle (15) having a plurality of slicer blades (16) attached thereto. There is also provided a housing (11) having a hollow interior (33) which houses rollers (12, 13 and 14) and ground aeration mechanism (15 and 16). In use, when carriage (10) travels over turf or grass, both rollers (12, 13 and 14) and the ground aeration mechanism (15 and 16) operate simultaneously to not only roll the grass but also slice it for the purpose of facilitating moisture penetration.Type: GrantFiled: November 30, 2001Date of Patent: March 30, 2004Assignee: Forestfield Pty. Ltd.Inventor: Raymond Jeffrey Dufty
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Patent number: 6460624Abstract: Ground aeration apparatus (10) having a main frame (11) which has one or more ground contacting rollers in the form of a main drive roller (22) and a plurality of smoothing rollers (13, 14, 15) mounted to an undercarriage (12) attached to the underside of the main frame (11). There is also provided a slicing mechanism (25) which comprises spaced cutters (31, 32) mounted to a support axle (30). In use, a grass surface may be subjected to a rolling or smoothing operation as well as an aeration operation.Type: GrantFiled: May 5, 2000Date of Patent: October 8, 2002Inventor: Raymond Jeffrey Dufty
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Patent number: 6457903Abstract: Rolling apparatus for rolling of turf or grass surfaces including a mobile main frame (11) and one or more undercarriages (45, 46) attached to the main frame (11) wherein the or each undercarriage has one or more smoothing rollers (45A, 46A) and there is further provided a control (62) pivotally attached to the main frame (11) wherein the or each undercarriage is pivotally attached to the control such that, in use, the or each smoothing roller closely follows ground contours.Type: GrantFiled: May 17, 2000Date of Patent: October 1, 2002Inventor: Raymond Jeffrey Dufty
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Publication number: 20020109345Abstract: There is provided a trailer (65) having a trailer frame (68) supported by ground engaging wheels (84). A pivot frame (69) is pivotally attached to the trailer frame (68) by pivot attachment means (72). The pivot frame (69) is attachable to maintenance apparatus such as a mower (100) in use. There is also provided connection means such as a drawbar (70) to a prime mover.Type: ApplicationFiled: December 26, 2001Publication date: August 15, 2002Inventor: Raymond Jeffrey Dufty