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Generated January 23, 2018

Hydraulic valve system

Patent Number: 6,845,614

Patent Information

Abstract
A valve manifold controls hydraulic flow in a hydraulic system for an air compressor unit. The manifold includes a pressure relief valve, a cold oil bypass valve, a proportional flow valve, and an anti-cavitation valve. The pressure relief valve diverts flow away from a fan motor when the pressure of hydraulic fluid within the hydraulic system is above a predetermined level. The cold oil bypass valve diverts flow away from a hydraulic cooler when the temperature of hydraulic fluid within the hydraulic system is below a predetermined level. The proportional flow valve diverts flow away from the fan motor when the temperature of hydraulic fluid within the hydraulic system is below a predetermined level. The anti-cavitation valve prevents pressure build up within the hydraulic system when the air compressor unit is shut off.
Patent Number: 6,845,614
Issue Date: 2005-01-25

Primary Category

Biographical Information

Executive Summary

Summary

This patent was granted in ► Log In, which is ► Log In speed.

It has ► Log In claims, which is ► Log In than average for this category.

Its proximity to basic research is ► Log In than others in this category, and it displays ► Log In technology cycle time.

This patent received ► Log In citations from other patents, and references ► Log In other patents, as compared to other patents in this category.

Grant Time

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Patent Grant Time

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Patent grant time can be influenced by many factors. Activities within the USPTO that are beyond the control of patent attornies can influence grant time, but short grant times can also indicate well-written patents and dedicated efforts to respond rapidly to USPTO office actions with strong arguments. Shorter grant times are preferable, and the scores for this section are inverse measures — higher scores are better.

Patent Claims

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The number of claims in a patent is correlated with its strength. Because greater claim counts increase the cost of a patent, more claims can indicate the importance an applicant assigns to a patent. Importantly, some may elect to file claims across multiple patents. A higher score in this metric indicates more claims, relative to others in this category.

Citations From Other Patents

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Citations to Other Patents

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A lower number of citations to other patents can be a sign of diminished patent strength. More citations indicate dependence on more other technologies. Higher scores in this category are better, and indicate fewer citations to other patents.

Research and Innovation Indicators
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Proximity to Basic Research

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Proximity to Basic Research

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Proximity to basic research is measured by comparing the number of citations to non-patent literature among a cohort of patents. Because most non-patent citations are primary research papers, a higher count indicates greater proximity to basic research.

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