A telescoping gear pump comprises a bolt, a Bellville washer, a wear plate, a seal housing, a seal spring, a spur gear including a wear lobe, a seal ring and a case drain path, a shaft, a ring gear including a wear lobe, seal ring, and a case drain path, seal, a bolt assembly including a Bellville w
A telescoping gear pump comprises a bolt, a Bellville washer, a wear plate, a seal housing, a seal spring, a spur gear including a wear lobe, a seal ring and a case drain path, a shaft, a ring gear including a wear lobe, seal ring, and a case drain path, seal, a bolt assembly including a Bellville washer and bolt, and a pressure plate. The assembly provides pressure to a fluid to maintain a seal within a telescoping pump/motor during operation. The wear lobe reduces wear while maintaining fluid pressure.
대표청구항▼
1. A telescoping pump/motor comprising: a rotatable first gear having first teeth;a rotatable second gear having second teeth, said first teeth, engaging said second teeth and said second gear being axially moveable relative to said first gear to vary a displacement of the pump/motor, one of said fi
1. A telescoping pump/motor comprising: a rotatable first gear having first teeth;a rotatable second gear having second teeth, said first teeth, engaging said second teeth and said second gear being axially moveable relative to said first gear to vary a displacement of the pump/motor, one of said first gear and said second gear having a wear lobe; anda wear compensator assembly including a spring assembly, said wear lobe contacting said wear compensator and wherein said spring assembly applies a pressure to said one of said first gear and said second gear having said wear lobe to maintain a seal for pressured fluid within the telescoping pump/motor during operation and wherein said wear lobe reduces wear while maintaining fluid pressure. 2. The telescoping pump/motor of claim 1 wherein said spring assembly comprises a mechanical spring. 3. The telescoping pump/motor of claim 1 wherein said spring assembly comprises a gas spring. 4. The telescoping pump/motor of claim 1 wherein said spring assembly comprises at least one washer engaged with a bolt. 5. The telescoping pump/motor of claim 1 wherein said first gear is a ring gear having said wear lobe formed at one end and contacting a surface of a seal housing. 6. The telescoping pump/motor of claim 5 including a pressure plate abutting an opposite end of said ring gear and wherein said spring assembly comprises at least one washer engaged with a bolt, said bolt connecting said seal housing to said pressure plate to maintain the seal. 7. The telescoping pump/motor of claim 5 wherein said ring gear includes a seal ring forming a continuous sealing surface at a periphery of said ring gear. 8. The telescoping pump/motor of claim 1 wherein said second gear is a spur gear having said wear lobe formed at one end. 9. The telescoping pump/motor of claim 8 wherein said spur gear includes a seal ring forming a continuous sealing surface at a periphery of said spur gear. 10. A telescoping pump/motor comprising: a wear compensator assembly including a wear plate and a spring assembly;a spur gear seal abutting said wear plate; andan axially movable spur gear having teeth and a wear lobe, said spur gear telescopically engaging said spur gear seal to vary a displacement of the pump/motor, said spur gear including a seal ring forming a continuous sealing surface, wherein said seal ring is a narrow band extending along a periphery of said spur gear. 11. The telescoping pump/motor of claim 10 wherein said spur gear has a drain path for guiding fluid between said seal ring and said wear lobe. 12. A telescoping pump/motor comprising: a wear compensator assembly including a wear plate and a spring assembly;a seal housing abutting said wear plate;a pressure plate coupled to said seal housing by said spring assembly; anda ring gear having teeth and a wear lobe, said ring gear positioned between said seal housing and said pressure plate, said ring gear including a seal ring forming a continuous sealing surface, wherein said seal ring is a narrow band extending along a periphery of said ring gear. 13. The telescoping pump/motor of claim 12 wherein said ring gear has a drain path for guiding fluid between said seal ring and said wear lobe. 14. A telescoping pump/motor comprising: a rotatable ring gear having first teeth and a wear lobe;a rotatable spur gear having second teeth and a wear lobe, said first teeth engaging said second teeth and said spur gear being axially moveable relative to said ring gear;a first wear compensator assembly including a wear plate and a first spring assembly;a spur gear seal abutting said wear plate, said spur gear telescopically engaging said spur gear seal to vary a displacement of the pump/motor, said spur gear including a seal ring forming a continuous sealing surface, wherein said seal ring is a narrow band extending along a periphery of said spur gear;a second wear compensator assembly including a second spring assembly;a seal housing connected to said wear plate by said first spring assembly;a pressure plate coupled to said seal housing by said second spring assembly; andsaid ring gear positioned between said seal housing and said pressure plate, said ring gear including a seal ring forming a continuous sealing surface, wherein said seal ring is a narrow band extending along a periphery of said ring gear, said first and second spring assemblies maintaining a seal against pressured fluid at said sealing surfaces.
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이 특허에 인용된 특허 (36)
Gibbons Gordon H. (Penryn CA), Adjustable wearplates rotary pump.
Gervais Edward H. (Cumberland Center ME) Middlekauff Carle A. (Cumberland Center ME) Wescott Donald C. (West Baldwin ME), High torque low speed hydraulic motor with rotary valving.
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