| Patent application number | Description | Published |
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| 20100212922 | PRELOADED DROP HAMMER FOR DRIVING PILES - A drop hammer for driving a pile. The drop hammer of the present invention comprises a housing member, a ram member, a helmet member, and a lifting system. The housing member defines a housing chamber and a vent port defining a preload position. The ram member is supported for movement within the housing chamber. When the lifting system raises the ram member above the preload position, ambient air substantially freely flows into and out of the housing chamber through the vent port. When the ram member falls below the preload position, ambient air within a preload chamber portion of the housing chamber compresses to apply a preload force on the inner portion of the helmet member. When the ram member moves into the lower position, the ram member impacts the helmet member to force the helmet member from the rest position to the impact position, thereby driving the pile. | 08-26-2010 |
| 20110081208 | AUTOMATICALLY ADJUSTABLE CAISSON CLAMP - A clamp system for operatively connecting a vibratory device to a plurality of caissons defining at least first and second diameters comprises a structural member, first and second clamps comprising first and second lock systems, respectively, and a clamp displacement system. The first and second clamps are supported by the structural member. The first and second lock systems fix the first and second clamps relative to the structural member. The clamp displacement system comprises at least one clamp displacement motor supported by the structural member and a mechanical link assembly connected between the at least one clamp displacement motor and the first and second clamps. Operation of the at least one clamp displacement motor allows the first and second clamps to be remotely displaced relative to the structural member such that the first and second clamps are spaced along the structural member as appropriate for either of the first and second diameters. Operation of the first and second locks systems fixes the first and second clamps relative to the structural member. | 04-07-2011 |
| 20110116874 | SYSTEMS AND METHODS FOR HANDLING PILES - A pile driving system for driving a pile comprising a support system comprising an arm assembly, an engaging system comprising a primary housing and a secondary housing, a suspension system, a vibratory system, and first and second clamp assemblies. The first clamp assembly rigidly connects the secondary housing to the pile. The second clamp assembly rigidly connects the secondary housing to the pile. The second clamp assembly rigidly connects the secondary housing to the side portion of the pile. The tip portion of the at least one pick member engages at least one sheet pile of a substantially horizontal stack of sheet piles to remove the at least one sheet pile from the stack of sheet piles. The pile driving system drives the pile using at least one of a driving force generated by the support system and a vibrational force generated by the vibratory system. | 05-19-2011 |
| 20110162859 | PILE DRIVING SYSTEMS AND METHODS EMPLOYING PRELOADED DROP HAMMER - A pile driving system for driving a pile. The pile driving system comprises a housing assembly, a hammer, a helmet member, and a lifting system. The housing assembly defining a drive axis and a plurality of vent openings. At least one vent opening is arranged at a first vent location along the drive axis, and at least one vent opening is arranged at a second vent location along the drive axis. The lifting system raises the hammer during each cycle. When the hammer drops and is above the first vent location, ambient air flows from the main chamber through the vent openings formed at the first and second vent locations. When the hammer drops and is below the first vent location and above the second vent location, ambient air flows from the main chamber through the vent openings formed at the second vent location. When the hammer drops and is below the second vent location, air within the main chamber is compressed to preload the helmet member prior to contact between the hammer and helmet member. | 07-07-2011 |
| Patent application number | Description | Published |
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| 20080208258 | Methods and instruments for endoscopic interbody surgical techniques - This invention relates to methods and instruments for performing a surgical procedure in a disc space between adjacent vertebrae. A cannula is inserted to create a working channel through the skin and tissue of a patient using a transformational approach to the disc space. A viewing element is used to visualize working end of the cannula and the disc space. A facetectomy is performed through the working channel to access the disc space. The disc space is prepared with various instruments, such as distractors, shims, chisels and distractor-cutters that extend through the working channel. At least implant is inserted into the disc space. The procedure allows bi-lateral support of the adjacent vertebrae with the at least one implant inserted via a unitary, minimally invasive approach to disc space. | 08-28-2008 |
| 20090177285 | Devices and techniques for a posterior lateral disc space approach - This invention relates to devices and instruments for implant insertion through a posterior lateral opening to the disc space. The instruments include an implant inserter, and the devices include a spinal fusion implant engageable by the implant inserter. The implant provides bilateral support of the adjacent vertebrae when inserted into the disc space from a postero-lateral approach. | 07-09-2009 |
| 20090299474 | Impacted orthopedic support implant - This invention relates to a porous bone implant ( | 12-03-2009 |
| 20100004752 | Vertebral body and disc space replacement devices - A vertebral replacement device for supporting adjacent vertebrae includes a vertebral body member having at least one of an upper or lower disc replacement member engaged thereto at one end thereof. The disc replacement device can be positioned in a spinal disc space when disengaged from the vertebral body member. | 01-07-2010 |
| 20100222784 | Insertion device and techniques for orthopaedic implants - Instruments for inserting an implant in a space between adjacent bony portions include a pair of parallel guide members extending distally from a proximal frame portion. Tamps and impaction instruments facilitate advancement of the implant between the guide members to the space between the adjacent bony portions. | 09-02-2010 |
