Patents by Inventor John D. McCrandall
John D. McCrandall 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: 7159299Abstract: A head stack assembly comb (154) for maintaining the heads (44) of a head stack assembly (26) in spaced relation is disclosed. The head stack assembly comb (154) includes a comb body (158) and a latch (218). The comb body (158) engages an upper surface of an uppermost actuator arm (30a) in the head stack assembly (26). The latch (218) engages a lower surface of this same actuator arm (30a). When installing the comb (154), the comb (154) is pivoted relative to the head stack assembly (26). This brings the latch (218) into engagement with the noted actuator arm (30a) and causes the latch (218) to pivot in a first direction against a spring (214), and then in the opposite direction by the action of the spring (214) on the latch (218) to engage the latch (218) with the lower surface of the noted actuator arm (30a).Type: GrantFiled: April 14, 2003Date of Patent: January 9, 2007Assignee: Maxtor CorporationInventors: Tom E. McMunigal, John D. McCrandall
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Patent number: 6648587Abstract: A material delivery system is disclosed which is particularly useful for filtered environments, such as clean rooms, minienvironments, or the like. One aspect of this particular material delivery system is that movement of an elevator is automatically controlled (i.e., no operator input), and more preferably is accomplished by monitoring for the presence of containers at multiple vertical positions. Another aspect of this particular material delivery system is that its elevator may be installed on and removed from a main housing of the material delivery system without requiring any tools. Yet another aspect of this particular material delivery system is that containers need not be unloaded from the material delivery system prior to removing its elevator, such as for replacement/maintenance purposes.Type: GrantFiled: March 7, 2001Date of Patent: November 18, 2003Assignee: Maxtor CorporationInventors: Tom E. McMunigal, Michael A. Finn, John D. McCrandall
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Patent number: 6599077Abstract: A material delivery system is disclosed which is particularly useful for filtered environments, such as clean rooms, minienvironments, or the like. In one embodiment, the material delivery system is disposed below a work area in a clean room-like environment to store parts to be used at the work area. In another embodiment, the material delivery system includes a material delivery elevator for transporting parts to a desired elevational level. In yet another embodiment, the material delivery system includes a cover which is detachably interconnected with a body to define an enclosed material storage area. An assembly is provided to lock the cover down onto the body with a gasket therebetween to appropriately seal this interconnection. This same assembly lifts the cover up and away from the body so as to not damage this gasket.Type: GrantFiled: February 12, 2002Date of Patent: July 29, 2003Assignee: Maxtor CorporationInventors: John D. McCrandall, Tom McMunigal, Richard E. Rupp, Jr.
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Patent number: 6471010Abstract: A material delivery system is disclosed which is particularly useful for filtered environments, such as clean rooms, minienvironments, or the like. In one embodiment, the material delivery system is disposed below a work area in a clean room-like environment to store parts to be used at the work area. In another embodiment, the material delivery system includes a material delivery elevator for transporting parts to a desired elevational level. In yet another embodiment, the material delivery system includes a cover which is detachably interconnected with a body to define an enclosed material storage area An assembly is provided to lock the cover down onto the body with a gasket therebetween to appropriately seal this interconnection. This same assembly lifts the cover up and away from the body so as to not damage this gasket.Type: GrantFiled: September 28, 2001Date of Patent: October 29, 2002Assignee: Maxtor CorporationInventors: John D. McCrandall, Tom McMunigal, Richard E. Rupp, Jr.
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Publication number: 20020074190Abstract: A material delivery system is disclosed which is particularly useful for filtered environments, such as clean rooms, minienvironments, or the like. In one embodiment, the material delivery system is disposed below a work area in a clean room-like environment to store parts to be used at the work area. In another embodiment, the material delivery system includes a material delivery elevator for transporting parts to a desired elevational level. In yet another embodiment, the material delivery system includes a cover which is detachably interconnected with a body to define an enclosed material storage area. An assembly is provided to lock the cover down onto the body with a gasket therebetween to appropriately seal this interconnection. This same assembly lifts the cover up and away from the body so as to not damage this gasket.Type: ApplicationFiled: February 12, 2002Publication date: June 20, 2002Inventors: John D. McCrandall, Tom McMunigal, Richard E. Rupp
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Publication number: 20020007986Abstract: A material delivery system is disclosed which is particularly useful for filtered environments, such as clean rooms, minienvironments, or the like. In one embodiment, the material delivery system is disposed below a work area in a clean room-like environment to store parts to be used at the work area. In another embodiment, the material delivery system includes a material delivery elevator for transporting parts to a desired elevational level. In yet another embodiment, the material delivery system includes a cover which is detachably interconnected with a body to define an enclosed material storage area. An assembly is provided to lock the cover down onto the body with a gasket therebetween to appropriately seal this interconnection. This same assembly lifts the cover up and away from the body so as to not damage this gasket.Type: ApplicationFiled: September 28, 2001Publication date: January 24, 2002Inventors: John D. McCrandall, Tom McMunigal, Richard E. Rupp
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Patent number: 6305500Abstract: A material delivery system is disclosed which is particularly useful for filtered environments, such as clean rooms, minienvironments, or the like. In one embodiment, the material delivery system is disposed below a work area in a clean room-like environment to store parts to be used at the work area. In another embodiment, the material delivery system includes a material delivery elevator for transporting parts to a desired elevational level. In yet another embodiment, the material delivery system includes a cover which is detachably interconnected with a body to define an enclosed material storage area. An assembly is provided to lock the cover down onto the body with a gasket therebetween to appropriately seal this interconnection. This same assembly lifts the cover up and away from the body so as to not damage this gasket.Type: GrantFiled: August 25, 1999Date of Patent: October 23, 2001Assignee: Maxtor CorporationInventors: John D. McCrandall, Tom McMunigal, Richard E. Rupp, Jr.
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Patent number: 5623759Abstract: An improved arm for an electronic servo mechanism is described which includes a plurality of glue pockets formed within it for bonding a coil assembly to the arm. A method for bonding the coil assembly to the arm is described in which a predetermined amount of glue is placed into each of the glue pockets.Type: GrantFiled: November 30, 1995Date of Patent: April 29, 1997Assignee: Maxtor CorporationInventors: Laurene J. Thorson, Richard E. Rupp, Jr., John D. McCrandall
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Patent number: 5285948Abstract: In the assembly and testing of hard disk drive systems, a station having the capability of performing soldering and testing operations on a disk drive subassembly unit, such as a head gimbal assembly. The subassembly unit is placed onto a fixture. The fixture firmly holds the subassembly unit during both the soldering and testing operations. Wires are reflow soldered onto solder pads of a flex circuit. Afterwards, the subassembly unit is subjected to a variety electrical tests. The results of these tests are displayed to the operator. If these results indicate that there might be a problem with the wiring and/or soldering, the operator can readily "retouch" or resolder the wiring and repeat the testing procedure to verify that the remedial measures have corrected the problem.Type: GrantFiled: April 30, 1992Date of Patent: February 15, 1994Assignee: Maxtor CorporationInventors: Rick E. Rupp, John D. McCrandall, Dennis L. Zekoff