초록 ▼

In an improved track wheel system for a camera dolly, a kingpin is pivotably attached to the dolly chassis and an axle is attached to the kingpin. A bushing is placed on a first section of the axle, a wheel bearing is attached to the bushing, and a first track wheel is attached to the wheel bearing.

In an improved track wheel system for a camera dolly, a kingpin is pivotably attached to the dolly chassis and an axle is attached to the kingpin. A bushing is placed on a first section of the axle, a wheel bearing is attached to the bushing, and a first track wheel is attached to the wheel bearing. A spacer is placed on a second section of the axle and a stop is attached to the end of the axle. The stop preferably comprises a quick release clip which can be easily removed and replaced to remove the spacer from the axle. With the spacer removed, the first track wheel is free to shift laterally on the axle. A second track wheel of the same construction is attached to an opposite side of the kingpin.

대표청구항 ▼

In an improved track wheel system for a camera dolly, a kingpin is pivotably attached to the dolly chassis and an axle is attached to the kingpin. A bushing is placed on a first section of the axle, a wheel bearing is attached to the bushing, and a first track wheel is attached to the wheel bearing.

In an improved track wheel system for a camera dolly, a kingpin is pivotably attached to the dolly chassis and an axle is attached to the kingpin. A bushing is placed on a first section of the axle, a wheel bearing is attached to the bushing, and a first track wheel is attached to the wheel bearing. A spacer is placed on a second section of the axle and a stop is attached to the end of the axle. The stop preferably comprises a quick release clip which can be easily removed and replaced to remove the spacer from the axle. With the spacer removed, the first track wheel is free to shift laterally on the axle. A second track wheel of the same construction is attached to an opposite side of the kingpin. The sensor of claim 1, wherein the locking means comprises an active means for locking the at least one component in the predetermined stationary position in response to the external stimulus. 8. The sensor of claim 7, wherein the locking means comprises: at least one movable member movably disposed on the base and configured to engage at least a portion of the at least one component; means for generating a lock signal in response to the external stimulus and an unlock signal in response to the absence of the external stimulus; and an actuator for moving the at least one movable member into engagement with at least the portion of the at least one component to lock the at least one component in response to the lock signal and to unlock the at least one component in response to the unlock signal. 9. The sensor of claim 1, wherein the locking means comprises a passive means for locking the at least one component in the predetermined stationary position in response to the external stimulus. 10. The sensor of claim 9, wherein the locking means comprises: a first locking mass movably disposed about the base in a first direction; and a second locking mass movably disposed about the base in a second direction opposite the first direction; wherein the first and second locking masses move to sandwich the at least one component therebetween in response to the external stimulus. 11. The sensor of claim 10, wherein the locking means further comprises a locking stop positioned between the first and second locking masses and corresponding to the predetermined stationary position, wherein the locking stop and the at least one component are sandwiched between the first and second locking masses in response to the external stimulus. 12. A method for protecting a sensor from an external stimulus, the method comprising: providing a sensor having a base and at least one component which moves relative to the base; and locking the at least one component in a predetermined stationary position in response to the external stimulus. 13. The method of claim 12, wherein the external stimulus is an acceleration of the sensor and wherein the locking comprises locking the at least one component in a null position taken by the at least one component corresponding to an acceleration that is substantially zero. 14. The method of claim 12, wherein the external stimulus is an acceleration of the sensor and wherein the locking comprises locking the at least one component in an active position taken by the at least one component when acceleration equals a predicted acceleration other than zero. 15. The method of claim 12, wherein the external stimulus is an acceleration of the sensor and the locking comprises locking the at least one component during periods in which the acceleration exceeds a predetermined value. 16. The method of claim 12, wherein the locking comprises actively locking the at least one component in the predetermined stationary position in response to the external stimulus. 17. The method of claim 16, wherein the locking comprises: providing at least one movable member movably disposed on the base and configured to engage at least a portion of the at least one component; generating a lock signal in response to the external stimulus and an unlock signal in response to the absence of the external stimulus; and moving the at least one movable member into engagement with the at least one component to lock the at least one component in response to the lock signal and to unlock the at least one component in response to the unlock signal. 18. The method of claim 12, wherein the locking comprises passively locking the at least one component in the predetermined stationary position in response to the external stimulus. 19. The method of claim 18, wherein the locking comprises: providing a first locking mass movably disposed about the base in a first direction and a second locking mass movably disposed about the base in a secon