초록 ▼

A machine control (10) for controlling machinery, is disabled unless the hand (H) of a person grasps a handgrip (14) of the control, and thereby increases the capacitance at each of two electrodes (52, 54) lying within the handgrip surface and spaced about the handgrip axis (56). The handgrip is for

A machine control (10) for controlling machinery, is disabled unless the hand (H) of a person grasps a handgrip (14) of the control, and thereby increases the capacitance at each of two electrodes (52, 54) lying within the handgrip surface and spaced about the handgrip axis (56). The handgrip is formed on a handle of a joystick (20) that can pivot about two perpendicular horizontal axes (22, 24). The joystick has a lower end (122) that lies in a cavity (120) where the joystick is pivotally mounted, the joystick has an upper end (121) forming a handle, and the joystick has a middle portion (124) that projects through an upper end of the cavity that lies within an aperture (114) of a housing top wall (112). A plurality of joystick detents (141-144) are mounted on the joystick middle portion, and a plurality of housing detents (151-154) are mounted on the housing to each engage a joystick detent. The joystick detents are formed on a collar (170) that is biased downwardly by a coil spring (180), to provide high resilience in deflection of the joystick detent when it engages and disengages a housing detent.

대표청구항 ▼

A machine control (10) for controlling machinery, is disabled unless the hand (H) of a person grasps a handgrip (14) of the control, and thereby increases the capacitance at each of two electrodes (52, 54) lying within the handgrip surface and spaced about the handgrip axis (56). The handgrip is for

A machine control (10) for controlling machinery, is disabled unless the hand (H) of a person grasps a handgrip (14) of the control, and thereby increases the capacitance at each of two electrodes (52, 54) lying within the handgrip surface and spaced about the handgrip axis (56). The handgrip is formed on a handle of a joystick (20) that can pivot about two perpendicular horizontal axes (22, 24). The joystick has a lower end (122) that lies in a cavity (120) where the joystick is pivotally mounted, the joystick has an upper end (121) forming a handle, and the joystick has a middle portion (124) that projects through an upper end of the cavity that lies within an aperture (114) of a housing top wall (112). A plurality of joystick detents (141-144) are mounted on the joystick middle portion, and a plurality of housing detents (151-154) are mounted on the housing to each engage a joystick detent. The joystick detents are formed on a collar (170) that is biased downwardly by a coil spring (180), to provide high resilience in deflection of the joystick detent when it engages and disengages a housing detent. al., 524/556; US-5409771, 19950400, Dahmen et al., 428/327; US-5447727, 19950900, Graham, 424/487; US-5547745, 19960800, Hansen et al., 428/283; US-5643662, 19970700, Yeo et al., 442/361; US-5669894, 19970900, Goldman et al., 604/368; US-5716707, 19980200, Mukaida et al., 428/402; US-5763523, 19980600, Chen et al., 524/922; US-5804605, 19980900, Palumbo, 521/028; US-5849862, 19981200, Davies et al., 528/502.E; US-5962578, 19991000, Beihoffer et al., 524/521; US-6072101, 20000600, Beihoffer et al., 604/372; US-6140550, 20001000, Beihoffer et al., 604/366; US-6156020, 20001200, Roe et al., 604/385.01; US-6159591, 20001200, Beihoffer et al., 428/327; US-6222091, 20010400, Beihoffer et al., 604/368; US-6235965, 20010500, Beihoffer et al., 604/368; US-6312417, 20011100, Hansson, 604/385.02; US-6350812, 20020200, Vert et al., 524/845; US-6380456, 20020400, Goldman, 604/368