초록 ▼

High-pressure hydraulic hoses are employed in hydrostatic drive systems to interconnect the transmission and motors thereof. It is imperative that fluid leakage be held to a minimum, or preferably eliminated, particularly where a vehicle employing the drive system is operated in a high-temperature e

High-pressure hydraulic hoses are employed in hydrostatic drive systems to interconnect the transmission and motors thereof. It is imperative that fluid leakage be held to a minimum, or preferably eliminated, particularly where a vehicle employing the drive system is operated in a high-temperature environment, such as a foundry. The hose assembly (13) of this invention provides a high degree of system reliability, relative to hydraulic leaks, and shields a high-pressure hose thereof (14) against damage and heat conduction to hydraulic fluid therein. The hose assembly (13) comprises a flexible high-pressure hose (14), an impervious flexible jacket (17) surrounding the hose in out-of-contact relationship therewith to define a fluid chamber (18) therebetween, and a mounting assembly (22) for mounting the hose (14) and the jacket (17) on a support member (23) to maintain them in out-of-contact relationship relative to each other. The mounting assembly (22) includes a first mount (26) for securing the hose on the support member (23) under a predetermined first sealing pressure, and a second mount (34) for securing the jacket (17) about the hose and on the support member (23) under a predetermined second sealing pressure that is less than the first sealing pressure. Method steps are taught for assembling the hose assembly (13) in this manner.

대표청구항 ▼

A hose assembly (13) comprising: a flexible high-pressure hose (14), an impervious flexible jacket (17) surrounding said hose (14) in out-of-contact relationship therewith to define a fluid chamber (18) therebetween, and mounting means (22) for mounting each of said hose (14) and said jacket (17) on

A hose assembly (13) comprising: a flexible high-pressure hose (14), an impervious flexible jacket (17) surrounding said hose (14) in out-of-contact relationship therewith to define a fluid chamber (18) therebetween, and mounting means (22) for mounting each of said hose (14) and said jacket (17) on a support member (23) and maintaining them in out-of-contact relationship relative to each other, said mounting means (22) including first means (26) for mounting said hose (14) on said support member (23) under a predetermined first sealing pressure and second means (34) for mounting said jacket (17) about said hose (14) and on said support member (23) under a predetermined second sealing pressure less than said first sealing pressure and for maintaining said jacket (17) in said out-of-contact relationship relative to said hose (14), said first means (26) including clamping means (27) for applying said first sealing presure in response to simultaneous application of said second sealing pressure and having port means (35) for communicating fluid therethrough and to said chamber (18).