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US4795401A Expired / Lapsed US ⏱️ 0.0 years remaining

Trunnion cross

Assignee: Gelenkwellenbau GmbH
•
Filing: 1987-05-06
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Granted: 1989-01-03
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Expires: 2007-05-06
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Abstract

Abstract A trunnion cross for connecting two yokes. The trunnion cross includes two pairs of trunnions, wherein each pair is located diametrically opposite each other and extends along an axis, wherein the two axes of the trunnion pairs extend perpendicularly to each other. Each trunnion is received in a roller bearing mounted in an eye of the yoke. The trunnion cross defines two throughbores extending perpendicularly to each other. Cylindrical throttle inserts are inserted in the throughbores for pressure redcution. A thread is formed on the outer circumference of each throttle insert defining a throttle passage. The throttle inserts ensure a uniform reduction of the lubricant pressure within the trunnion cross toward all four trunnion bearing. The danger of a clogging of a lubricant duct by dirt particles is reduced. Any plugs formed by hardening lubricant which cause clogging of a lubricant duct can be ejected.

Inventors

  • 👤 Eberhard Ende

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 07:29
CPC Classifications
F; F16; F16D; F16D3/00; F16D3/16; F16D3/26; F16D3/38; F16D3/40; F16D3/41

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 112 words
A trunnion cross for connecting two yokes, each yoke defining a pair of eyes receiving a roller bearing, the trunnion cross comprising two pairs of trunnions, the trunnions of each pair of trunnions located diametrically opposite each other and each pair of trunnions defining an axis, the two axes of the trunnions extending perpendicularly to each other, each trunnion adapted for mounting in one of the roller bearings, the trunnion cross defining two throughbores extending in the directions of the two axes, cylindrical throttle inserts inserted with a press fit in the throughbores for pressure reduction, and a thread formed on the outer circumference of each throttle insert defining a throttle passage.
Claim 2
Dependent Claim 112 words
A trunnion cross for connecting two yokes, each yoke defining a pair of eyes receiving a roller bearing, the trunnion cross comprising two pairs of trunnions, the trunnions of each pair of trunnions located diametrically opposite each other and each pair of trunnions defining an axis, the two axes of the trunnions extending perpendicularly to each other, each trunnion adapted for mounting in one of the roller bearings, the trunnion cross defining two throughbores extending in the directions of the two axes, cylindrical throttle inserts inserted with a press fit in the throughbores for pressure reduction, and a thread formed on the outer circumference of each throttle insert defining a throttle passage.
Claim 3
Dependent Claim 14 words
The trunnion cross according to claim 1, wherein the thread is a sharp thread.
Claim 4
Dependent Claim 14 words
The trunnion cross according to claim 1, wherein the thread is a trapezoidal thread.
Claim 5
Dependent Claim 17 words
The trunnion cross according to claim 1, wherein each throttle insert defines an axially extending blind-end bore.
Claim 6
Dependent Claim 16 words
The trunnion cross according to claim 1, wherein the throttle inserts are made of plastics material.
Claim 7
Dependent Claim 29 words
The trunnion cross according to claim 1, wherein each throttle insert is a tubular member, a plug being provided for closing one of the ends of the tubular member.

References Cited (Backward Citations)

US2323115A Cited
SU385767A1 Cited
DE2721706A1 Cited
US4506423A Cited
DE3300376A1 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1992-01-03 1992-07-04 1993-01-03 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1996-01-03 1996-07-04 1997-01-03 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2000-01-03 2000-07-04 2001-01-03 $7700.00 Window Closed / Lapsed

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