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    • 4. 发明授权
    • Boom extension stowage system
    • Boom延伸装载系统
    • US4431109A
    • 1984-02-14
    • US238290
    • 1981-02-25
    • Joseph W. BehrendtJohn D. EvansJames W. Cox, Jr.
    • Joseph W. BehrendtJohn D. EvansJames W. Cox, Jr.
    • B66C23/70B66C23/62
    • B66C23/702
    • A multi-section crane boom is provided with a fly section and a jib section which may be erected and supported by a mast and pendants on the end of the boom to extend the effective length of the boom. When the fly section and jib section are not used they are stored on the boom, the fly section being supported alongside of and generally parallel to the boom and the jib section being supported in position below the fly section. The fly section can be mounted on the end of the boom alone while the jib section remains in stored position, or, alternatively, the fly section can be mounted on the boom and the jib section can be mounted on the outer end of the fly section. A pair of compact hook shaped resilient connectors serve as backstops which prevent the fly from pivoting in excess of 5.degree. upwardly past longitudinal of alignment with the boom axis when the boom is in a near vertical position. The resilient connectors also permit easy attachment of the pendants when slack, and further act as shock absorbers during stowage of the fly and during pivotal erection of the jib relative to the fly in the event the components of the crane are improperly adjusted or the operator negligently operates the machine.
    • 多部分起重​​机吊臂设有一个飞行部分和一个起重臂部分,该部分可以由桅杆竖立并支撑,并且在起重臂的端部上有吊坠以延长吊杆的有效长度。 当不使用飞行部分和悬臂部分时,它们被存储在起重臂上,飞行部分被支撑在起重臂的旁边并且大致平行于起重臂并且起重部分被支撑在飞行部分下方的位置。 飞行部分可以单独安装在起重臂的端部,同时起重臂部分保持在存储位置,或者可选地,飞行部分可以安装在起重臂上,并且起重部分可以安装在飞行部分的外端 。 一对紧凑的钩形弹性连接器用作反向挡块,当悬臂处于接近垂直位置时,防止飞行物超过5度向上枢转超过与悬臂轴线对准的纵向。 弹性连接器还允许在松弛时容易地附接吊坠,并且在起重机的装载期间以及在起重机的部件被不适当地调整或者疏忽地操作的情况下,在起重臂相对于飞行器的枢转竖立期间还可充当减震器 操作机器。
    • 5. 发明授权
    • Portable bow press and limb connector therefor
    • 便携式弓按压器和四肢连接器
    • US07913680B2
    • 2011-03-29
    • US12127604
    • 2008-05-27
    • John D. Evans
    • John D. Evans
    • F41B5/00
    • F41B5/10F41B5/1449
    • The invention provides a portable bow press and a limb connector therefor, for use with a bow comprising a pair of resilient limbs that extend outwardly from a handle. The bow press is used to force the outer ends of the limbs together, thereby releasing tension on the bow string and/or cable. The user is then able to remove, replace or repair the bow string or cable while the bow press holds the bow in position. The bow press may comprise two limb connectors which hold the bow press in place. Each limb connector may comprise an outer peg and an inner peg, which are used to couple the limb connector to a bow limb.
    • 本发明提供一种便携式弓形压力机及其连接器,用于与包括从手柄向外延伸的一对弹性臂的弓构成。 弓压机用于将四肢的外端部压在一起,从而释放弓弦线和/或线缆上的张力。 然后用户能够移除,更换或修理弓弦或电缆,同时弓按压器将弓固定在适当位置。 弓压机可以包括将弓压机保持在适当位置的两个连接器。 每个肢体连接器可以包括外钉和内钉,其用于将肢体连接器连接到弓形肢。
    • 8. 发明授权
    • Internal adjustable tension frame for touch-sensitive boards
    • 用于触敏板的内部可调张紧架
    • US5852974A
    • 1998-12-29
    • US920862
    • 1997-08-29
    • Patrick EganJim LongJohn D. Evans
    • Patrick EganJim LongJohn D. Evans
    • G09F15/00B05C17/06
    • G09F15/0025
    • A frame assembly comprises a rigid inner frame having a first perimeter; a plurality of independent outer frame members positioned outwardly of the inner frame to define a second perimeter larger than the first perimeter, the second perimeter defining a plane having a front face and a rear face; and a flexible sheet extending across the front face, around the outer frame members and secured in a fixed position on the rear face to define a plurality of longitudinally extending passageways adjacent the second perimeter, the outer frame members positioned in the passageways. A plurality of longitudinally extending members are mounted on at least a portion of the inner frame, each of the longitudinally extending members moveable between a first position and a second position and drivingly connected to the outer frame members whereby movement of a longitudinally extending member between the first and second positions causes at least a portion of one of the outer frame members to move outwardly thereby tensioning at least a portion of the flexible sheet.
    • 框架组件包括具有第一周边的刚性内框架; 多个独立的外框架构件,其定位在所述内框架的外侧,以限定大于所述第一周边的第二周边,所述第二周边限定具有前表面和后表面的平面; 以及柔性片,其横过前表面延伸,围绕外框架构件并固定在后表面上的固定位置,以限定邻近第二周边的多个纵向延伸的通道,外框架构件定位在通道中。 多个纵向延伸的构件安装在内框架的至少一部分上,每个纵向延伸构件可在第一位置和第二位置之间移动并且驱动地连接到外框架构件,从而使纵向延伸构件在 第一和第二位置使得外框架构件中的一个的至少一部分向外移动,从而张紧至少一部分柔性片。