公开(公告)号：US11300116B2

公开(公告)日：2022-04-12

申请号：US16551330

申请日：2019-08-26

Applicant: Regents of the University of Minnesota

Inventor： Saeed Hashemi ,  William Keith Durfee

IPC: F04B53/14 ,  F04B53/02 ,  F15B15/10 ,  F16J3/02 ,  F04B45/073 ,  B29C65/00

Abstract: Hydraulic cylinders and methods of fabricating hydraulic cylinders, including long-stroke rolling diaphragm cylinders with any stroke length. In some embodiments, the cylinders are manufactured to have a stroke length to bore diameter (“stroke-to-bore”) ratio optionally greater than 1:1. Various embodiments are suitable for use in a passive hydraulic body-powered wearable robot, for example.

公开(公告)号：US11241171B2

公开(公告)日：2022-02-08

申请号：US15325959

申请日：2015-07-16

Applicant: REGENTS OF THE UNIVERSITY OF MINNESOTA

Inventor： William Keith Durfee ,  Paul Anthony Iaizzo ,  Jesus Arturo Cabrera ,  Jenna Christine Iaizzo ,  John Mehawej ,  Kevin Ruda ,  Jason Paul McConnell

IPC: A61B5/11

Abstract: Embodiments relate to devices, systems and methods for monitoring neuromuscular blockage. In an embodiment, a neuromuscular blockage monitoring system comprises a patch device comprising a unitary patch body, at least two electrodes and at least one sensor, the at least one sensor arranged between the at least two electrodes on the unitary patch body; and a stimulator device operatively coupled to the patch device and configured to provide at least one electrical signal to the at least two electrodes to stimulate a muscle motor point and to receive a signal from the at least one sensor related to a result of the stimulation of the muscle motor point.

公开(公告)号：US20130333368A1

公开(公告)日：2013-12-19

申请号：US13920724

申请日：2013-06-18

Applicant: Regents of the University of Minnesota

Inventor： William Keith Durfee ,  David B. Kittelson ,  Lei Tian

IPC: F01B11/04

CPC classification number: F01B11/04 ,  A61H1/0237 ,  A61H1/0266 ,  A61H2201/12 ,  A61H2201/164 ,  A61H2201/165 ,  F02B71/045

Abstract: The invention herein described consists of a single-cylinder free-piston engine system comprising a combustion cylinder, a compression cylinder, a seal between the two cylinders and a piston assembly, capable of being produced in a miniature scale (e.g., less than 10 cubic centimeters volume). The combustion cylinder consists of a holding chamber wherein fuel enters through a fuel inlet port before combustion, a combustion chamber wherein combustion occurs according to an HCCI process, after which the excess fuel and exhaust leaves the engine system through a port for exhaust, and a port extending from the holding chamber to the combustion chamber. The compression cylinder comprises a compression chamber wherein a compressible a compressible fluid enters through an inlet port, is compressed by the single-cylinder engine system, and the compressed fluid exits through an outlet port, and a rebound chamber wherein energy from the combustion process is conserved by a rebound element.

Abstract translation: 本文描述的本发明包括单缸自由活塞发动机系统，其包括燃烧气缸，压缩气缸，两个气缸之间的密封件和活塞组件，其能够以小尺度（例如，小于10立方厘米 厘米体积）。 燃烧筒包括一个保持室，其中燃料在燃烧之前通过燃料入口进入燃烧室，其中根据HCCI过程发生燃烧的燃烧室，之后多余的燃料和废气通过排气口离开发动机系统， 端口从保持室延伸到燃烧室。 压缩缸包括压缩室，其中可压缩的可压缩流体通过入口进入，由单缸发动机系统压缩，压缩流体通过出口排出，并且回弹室，其中来自燃烧过程的能量为 由反弹元素保存。