1. A non-implantable soft tissue model comprising:
a core having a first elasticity; and
a cladding molded about the core, the cladding having a second elasticity, the first elasticity being substantially less than the second elasticity, such that the core substantially limits the elongation of the cladding molded therearound,
wherein the core and cladding define a body having a plurality of protrusions, each protrusion terminating at an end.
2. The soft tissue model of claim 1 wherein the core comprises a nylon material, and the cladding comprises a molded polyurethane.
3. The soft tissue model of claim 1 wherein the ends are configured for attachment to an artificial bone.
4. The soft tissue model of claim 1 wherein the cladding further includes at least one of a dye and a colorant so as to exhibit a color substantially identical to that of the desired tissue to be modeled.
5. The soft tissue model of claim 1 wherein the elongation thereof is substantially less than the elongation of the cladding alone.
6. The soft tissue model of claim 1 wherein the cladding has a Shore A \u201c00\u201d hardness of between 20 and 40.
7. A skeletal system model comprising:
at least two bones;
a non-implantable soft tissue comprising:
a body and at least two protrusions, each of the at least two protrusions having an end, at least one of the ends attached to a first bone and at least one of the ends attached to a second bone, the soft tissue further comprising:
a core having a first elasticity; and
a cladding molded about the core, the cladding having a second elasticity, the first elasticity being substantially less than the second elasticity, such that the core substantially limits the elongation of the cladding molded therearound.
8. The skeletal system of claim 7 wherein the core comprises a nylon material, and the cladding comprises a polyurethane molded therearound.
9. The skeletal system of claim 7 wherein the cladding further includes at least one of a dye and a colorant so as to exhibit a color substantially identical to that of the desired tissue to be modeled.
10. The skeletal system of claim 7 wherein the elongation of the soft tissue is substantially less than the elongation of the cladding alone.
11. The skeletal system of claim 7 wherein the cladding has a Shore A \u201c00\u201d hardness of 20 to 40.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An automatically controlled garage door closer device for installation on a garage having a door opening and a garage door with an upper edge and a lower edge, a reversible electric motor providing motive power to move the door between open and closed positions on a pair of generally parallel tracks, and sensor means adjacent the lower edge of the door opening providing a beam projected across the opening, said device acting to automatically close the door if said door is inadvertently left open after a vehicle enters or exits the garage and comprises a switch housing adapted to be mounted on one of said tracks guiding the door between open and closed positions adjacent the final open position of the door, a switch within the housing having a flexible finger extending beyond the housing and into the path of the upper door panel edge, and a second housing containing said sensor means and a control circuit including timer means operatively connected to the motive power for the garage door for energization of the door closer once a predetermined period of time has elapsed after the door is opened, audible alarm means activated when the door reaches its fully open position, relay means operated by the timer once the predetermined time period has elapsed to automatically close the door, and means to interrupt the timer cycle upon a breaking of the sensor beam.
2. An automated garage door closer as set forth in claim 1, in which a radio receiver is mounted adjacent to and operatively connected to said motor and adapted to cooperate with a transmitter for activation of the motor.
3. An automated garage door closer as set forth in claim 1, in which a Schmit trigger inverter is positioned in the circuit of the audible alarm to sound the alarm at prescribed intervals.
4. An automated garage door closer as set forth in claim 3, wherein a switch is located in the closer circuit to deactivate the device.
5. An automated garage door closer as set forth in claim 1, wherein said device is operatively connected to a push button wall switch for the garage door openercloser mechanism.
6. An automated garage door closer as set forth in claim 1, wherein mounting means for said switch housing comprises at least one strap encompassing said housing and track.
7. An automated garage door closer as set forth in claim 6, in which said switch housing consists of a box provided with a nesting lid or cover, said cover having two or more raised straps forming openings therein that receive a strap passing through the openings and around the track to secure the device to the track.
8. An automated garage door closer as set forth in claim 1, in which interruption of said sensor beam acts to activate said timer.
9. An automated garage door closer as set forth in claim 8, wherein once the timer is activated, interruption of the door closer cycle by the sensor inactivates the timing circuit.
10. An automated garage door closer as set forth in claim 8, wherein if, during closing of the door, the sensor beam is interrupted and the door is returned to open position, the timing circuit is inactivated.
11. An automated garage door closer as set forth in claim 10, wherein reactivation of said timing circuit only occurs when the door is closed for a predetermined period of time.
12. An automated garage door closer as set forth in claim 11, in which said recycle delay circuit includes a capacitor which begins discharging when power is removed, and a recycle fault circuit prevents another time delay cycle
13. An automated garage door closer as set forth in claim 11, in which said sensor means provides means to gauge the interval of interruption of said sensor beam.
14. An automated garage door closer as set forth in claim 13, in which said sensor means determines whether a vehicle or a person or animal interrupts the sensor beams by the time interval involved.
15. An automated garage door closer as set forth in claim 1, including means to detect carbon monoxide positioned in the unit.
16. An automated garage door closer as set forth in claim 15, wherein the carbon monoxide detector means is connected in said circuit to open the door when a dangerous level of gas is sensed.
17. A method for controlling a motor-driven door operator including the steps of activating a limit switch when the door is moved to an open position, providing a timing circuit having a predetermined time delay during which the door remains open, sounding an alarm during the time delay indicating that an automatic closer mechanism is activated, upon termination of the time delay reactivating the motor to close the door, and activating a down limit switch as the door is moved to its closed position.
18. A method for controlling a motor-driven door operator as set forth in claim 17, including the step of providing a recycle delay circuit wherein, if the door closing cycle is interrupted, the timing circuit will be deactivated.
19. A method for controlling a motor-driven door operator as set forth in claim 18, including the step of interrupting the door closing cycle and deactivating the timing circuit where a sensor determines that an object has interrupted the sensor beam for a short interval.
20. A method for controlling a motor-driven door operator as set forth in claim 17, including the step if determining the time interval of interruption of the sensor beam and acting to activate the timing cycle based on the elapsed time interval.
21. A method for controlling a motor-driven door operator as set forth in claim 20, in which said sensor provides a short time delay after interruption of the sensor beam before initiating the timing cycle.
22. A method for controlling a motor-driven door operator as set forth in claim 21, wherein multiple interruptions of said sensor beam will not initiate the door closing cycle until the time delay after interruptions of the sensor beam has occurred.
23. A method for controlling a motor-driven door operator as set forth in claim 22, in which a pre-determined minimum time interval is gauged for passage of a vehicle through the sensor beam, wherein the elapse of the minimum time interval initiates the door closing cycle.