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US 3,972,378 AGranted
Swing lock means for an hydraulic excavator
AssigneeCaterpillar Tractor Co.
InventorsGerard P. A. J. Houriez, Charles M. G. Van Wuytswinkfl
Life of this patent
Estimating the term…
Abstract
An excavator comprises an upper unit rotatably mounted on a tracked undercarriage. A swing gear mechanism is operatively connected between the upper unit and the undercarriage to selectively rotate the upper unit. An operator-controlled locking mechanism is positioned interiorly of the swing gear mechanism to selectively lock the upper unit relative to the undercarriage.
Claims15
An earthworking vehicle comprising
- a mobile undercarriage,
- an upper unit rotatably mounted on said undercarriage,
- an operator's cab mounted on said upper unit,
- a swing gear drive mechanism operatively connected between said upper unit and said undercarriage for selectively rotating said upper unit,
- lock means operatively connectable between said upper unit and said undercarriage for selectively locking said upper unit against rotation relative to said undercarriage, said lock means disposed within the confines of said swing gear drive mechanism, and
- operator control means mounted in said operator's cab and operatively connected to said lock means for selectively locking said upper unit to said undercarriage, said operator control means comprising a handle movably mounted on a support in said operator's cab and guide means formed on said support for guiding said handle between locked and unlocked positions thereof, said handle being operatively connected to said lock means by a bellcrank pivotally mounted on said support and having one arm thereof pivotally connected to said handle and a cable interconnected between a second arm of said bellcrank and said lock means.
3 more elements
An earthworking vehicle comprising
- a mobile undercarriage,
- an upper unit rotatably mounted on said undercarriage,
- an operator's cab mounted on said upper unit,
- a swing gear drive mechanism operatively connected between said upper unit and said undercarriage for selectively rotating said upper unit,
- lock means operatively connectable between said upper unit and said undercarriage for selectively locking said upper unit against rotation relative to said undercarriage, said lock means disposed within the confines of said swing gear drive mechanism and comprising a lock pin reciprocally mounted in a tubular bore defined in said upper unit for movement between locked and unlocked positions thereof and an aperture defined on said undercarriage to underlie and receive said lock pin when said pin is moved to its locked position therein,
- operator control means mounted in said operator's cab and operatively connected to said lock pin for selectively moving the same to lock said upper unit to said undercarriage, and
- guide means operatively connected to said lock pin for guiding vertical movements thereof between its locked and unlocked positions comprising a guide pin secured to said lock pin and disposed for reciprocal movements in a like-shaped guide opening formed in a support member mounted adjacent to said lock pin.
4 more elements
An earthworking vehicle comprising
- a mobile undercarriage,
- an upper unit rotatably mounted on said undercarriage,
- an operator's cab mounted on said upper unit,
- a swing gear drive mechanism operatively connected between said upper unit and said undercarriage for selectively rotating said upper unit,
- lock means operatively connectable between said upper unit and said undercarriage for selectively locking said upper unit against rotation relative to said undercarriage, said lock means disposed within the confines of said swing gear drive mechanism, and
- operator control means mounted in said operator's cab and operatively connected to said lock means for selectively locking said upper unit to said undercarriage, said operator control means comprising a handle movably mounted on a support in said operator's cab and guide means formed on said support for guiding said handle between locked and unlocked positions thereof, said guide means comprising an at least generally vertically disposed guide slot and a pin secured to said handle and disposed in said slot.
3 more elements
Dependencies are inferred from the claim text.