1. A recording medium cartridge defined as a magnetic tape cartridge, comprising:
a cartridge body accommodating a magnetic tape; and
a non-contact type memory device disposed on a surface facing to a tape winding surface of said cartridge body,
wherein the non-contact memory device has an antenna for transmitting and receiving data,
wherein said tape winding surface is a surface corresponding to an upper or lower surface of windings of the magnetic tape wound on said tape reel accommodated in said cartridge body, and
the surface facing to the tape winding surface of said cartridge body is an external surface of an upper or lower half of said cartridge body, and is a surface positioned above or under the tape winding surface.
2. A recording medium cartridge defined as a magnetic tape cartridge, comprising:
a cartridge body accommodating a magnetic tape; and
a non-contact type memory device disposed on a surface facing to a tape winding surface of said cartridge body,
wherein the non-contact memory device has an antenna for transmitting and receiving data, and
wherein the position where said non-contact type memory device is disposed is a position, not interfering with respective portions provided or members fitted to said upper and lower halves, on the surface facing to the tape winding surface.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. A motive power transmission device for a radio control device, comprising:
a shaft including:
a first end having an enlarged ball-like portion formed thereon and a second end adapted to be connected to a motor of the radio control model; and
a funnel-shaped groove diametrically defined in and extending through the enlarged ball-like portion;
a coupling having a first end connected to the shaft and a second end adapted to be connected to and drive a wheel of the radio control model, the coupling:
a cavity defined in the first end of the coupling for universally receiving the enlarged ball-like portion of the shaft;
two holes defined in the first end of the coupling and communicating with the cavity in the coupling, the two holes diametrically corresponding to each other and communicating with the funnel-shaped groove when the enlarged ball-like portion is received in the cavity in the coupling; and
an annular groove defined in an outer periphery of the coupling and communicating with the two holes in the coupling;
a pin extending through the holes in the coupling and the funnel-shaped groove in the enlarged ball-like portion to connected the shaft with the coupling, the pin having two opposite ends each received in a corresponding one of the two holes in the coupling; and
a fixing member received in the annular groove in the coupling to hold the pin in place.
2. The motive power transmission device as claimed in claim 1, wherein the fixing is a spring.
3. The motive power transmission device as claimed in claim 1, wherein the fixing member is a hoop.
4. The motive power transmission device as claimed in claim 3, wherein the hoop is made of flexible material.