Patents Assigned to Jost International of Grand Haven Michigan
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Patent number: 5676018Abstract: A landing gear for semitrailers includes a two-speed single reduction gear assembly having fewer, smaller, and simpler parts, resulting in a compact single reduction gear assembly and cost efficient landing gear unit with a unique clutch-shifting mechanism to provide for shifting from one ratio to another. The single reduction gear assembly is disposed on and about vertically offset input and output shafts further resulting in an easy to crank and shift landing gear unit capable of achieving standard crank handle turn to vertical leg travel distance ratios. The low gear or low speed ratio of the landing gear unit can be varied within a broad range during manufacture, if desired, generally without increasing the overall size or complexity of the two-speed single reduction gear assembly. The landing gear can further include a universal mounting feature and is durable and simple to use.Type: GrantFiled: April 23, 1996Date of Patent: October 14, 1997Assignee: Jost International of Grand Haven, MichiganInventor: Ervin VanDenberg
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Patent number: 5538225Abstract: A landing gear for semitrailers includes a two-speed single reduction gear assembly having fewer, smaller, and simpler parts, resulting in a compact single reduction gear assembly and cost efficient landing gear unit with a unique clutch-shifting mechanism to provide for shifting from one ratio to another. The single reduction gear assembly is disposed on and about vertically offset input and output shafts further resulting in an easy to crank and shift landing gear unit capable of achieving standard crank handle turn to vertical leg travel distance ratios. The low gear or low speed ratio of the landing gear unit can be varied within a broad range during manufacture, if desired, generally without increasing the overall size or complexity of the two-speed single reduction gear assembly. The landing gear can further include a universal mounting feature and is durable and simple to use.Type: GrantFiled: March 31, 1994Date of Patent: July 23, 1996Assignee: JOST International of Grand Haven MichiganInventor: Ervin VanDenberg
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Patent number: 5238266Abstract: A landing gear for semitrailers includes a two speed double reduction gear assembly having fewer, smaller, and simpler parts, resulting in a compact double reduction gear assembly housed in a relatively small gear box or entirely within one of the landing gear legs, which is a cost efficient landing gear unit with a unique clutch-shifting mechanism to provide for shifting from one ratio to another. The double reduction gear assembly is disposed on and about in-line input and output shafts further resulting in an easy to crank and shift landing gear unit capable of achieving standard crank handle turn to vertical leg travel distance ratios. The low gear or low speed ratio of the landing gear unit can be varied within a broad range during manufacture, if desired, generally without increasing the overall size or complexity of the two speed double reduction gear assembly. The landing gear can further include a universal mounting feature and is durable and simple to use.Type: GrantFiled: June 13, 1991Date of Patent: August 24, 1993Assignee: Jost International of Grand Haven, MichiganInventor: Ervin VanDenberg
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Patent number: 5199738Abstract: A landing gear for semitrailers includes a two speed double reduction gear assembly having fewer, smaller, and simpler parts, resulting in a compact double reduction gear assembly and cost efficient landing gear unit with a unique clutch-shifting mechanism to provide for shifting from one ratio to another. The double reduction gear assembly is disposed on and about in-line input and output shafts further resulting in an easy to crank and shift landing gear unit capable of achieving standard crank handle turn to vertical leg travel distance ratios. The low gear or low speed ratio of the landing gear unit can be varied within a broad range during manufacture, if desired, generally without increasing the overall size or complexity of the two speed double reduction gear assembly. The landing gear can further include a universal mounting feature and is durable and simple to use.Type: GrantFiled: April 16, 1991Date of Patent: April 6, 1993Assignee: Jost International of Grand Haven MichiganInventor: Ervin VanDenberg