# US 10,480,260 B2 · Isolator > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,480,260 B2 - Document ID: US10480260B2 - Status: Granted - Kind: B2 - Application number: 15/737,627 - Filed: 2016-06-30 - Published: 2018-06-07 - Granted: 2019-11-19 - Earliest claimed: 2015-06-30 - Assignees: Lord Corporation - Applicants: LORD Corporation - Inventors: Michael R. Brown; Samuel Caraballo; Adam J. Keithly; Gregg Cune; Jonathan M. Owens - Web page: https://patentgrep.com/patent/US10480260B2 ## CPC - E21B 17/07: Telescoping joints for varying drill string lengths; Shock absorbers - E21B 17/003: {with electrically conducting or insulating means (E21B17/028 and E21B17/023 take precedence)} - E21B 47/017: Protecting measuring instruments - F16F 13/06: the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper (F16F13/26 takes precedence) - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS - F16F: SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION ## Abstract An isolator (200) has an outer housing (224) comprising an outer housing bore (234), an inner member (240) received coaxially within the outer housing (224), a precompressed compression compliance component (CCC) (230) disposed between the outer housing (224) and the inner member (240), the CCC (230) being configured to bias the inner member (240) in an axial direction, and a precompressed rebound compliance component (RCC) (232) disposed between the outer housing (224) and the inner member (240), the RCC (232) being configured to bias the inner member (240) in an opposite axial direction. ## Claims ### Claim 1 An isolator, comprising: an outer housing comprising an outer housing bore; an inner member received coaxially within the outer housing; a precompressed compression compliance component (CCC) disposed between the outer housing and the inner member, the precompressed CCC being configured to longitudinally bias the inner member in an axial direction; and a precompressed rebound compliance component (RCC) disposed between the outer housing and the inner member, the precompressed RCC being configured to longitudinally bias the inner member in an opposite axial direction. ### Claim 2 (depends on 1) The isolator of claim 1, wherein movement of the inner member in the axial direction reduces a compression of the precompressed CCC and increases a compression of the precompressed RCC and wherein movement of the inner member in the opposite axial direction increases a compression of the precompressed CCC and decreases a compression of the precompressed RCC. ### Claim 3 (depends on 1) The isolator of claim 1, wherein at least one of (1) the precompressed CCC is configured to allow fluid to pass between the precompressed CCC and the outer housing and (2) the precompressed RCC is configured to allow a fluid to pass between the precompressed RCC and the outer housing. ### Claim 4 (depends on 1) The isolator of claim 1, further comprising: an upstream endcap attached to an upstream endcap interface of the outer housing; and a ceramic sleeve disposed within the upstream endcap. ### Claim 5 (depends on 4) The isolator of claim 4, further comprising a piston carried by the inner member, the piston being movably received within the ceramic sleeve. ### Claim 6 (depends on 1) The isolator of claim 1, the outer member comprising a pressure compensation port. ### Claim 7 (depends on 1) The isolator of claim 1, further comprising at least one of a drive unit and a drive nut carried by the inner member and disposed between the precompressed CCC and the precompressed RCC. ### Claim 8 (depends on 1) The isolator of claim 1, wherein the precompressed CCC comprises an axial stiffness higher than an axial stiffness of the precompressed RCC. ### Claim 9 (depends on 1) The isolator of claim 1, wherein at least one of the precompressed CCC and the precompressed RCC comprise a non-linear axial stiffness. ### Claim 10 A hydrocarbon recovery system (HRS), comprising: an isolated mass; an excitation source; and an isolator disposed between the isolated mass and the excitation source, the isolator comprising: an outer housing comprising an outer housing bore; an inner member received coaxially within the outer housing; a precompressed compression compliance component (CCC) disposed between the outer housing and the inner member, the precompressed CCC being configured to longitudinally bias the inner member in an axial direction; and a precompressed rebound compliance component (RCC) disposed between the outer housing and the inner member, the precompressed RCC being configured to longitudinally bias the inner member in an opposite axial direction. ### Claim 11 (depends on 10) The HRS of claim 10, wherein the excitation source is a drill bit. ### Claim 12 (depends on 10) The HRS of claim 10, wherein movement of the inner member in the axial direction reduces a compression of the precompressed CCC and increases a compression of the precompressed RCC and wherein movement of the inner member in the opposite axial direction increases a compression of the precompressed CCC and decreases a compression of the precompressed RCC. ### Claim 13 (depends on 10) The HRS (100) of claim 10, wherein at least one of (1) the precompressed CCC is configured to allow fluid to pass between the precompressed CCC and the outer housing and (2) the precompressed RCC is configured to allow a fluid to pass between the precompressed RCC and the outer housing. ### Claim 14 (depends on 10) The HRS of claim 10, wherein the isolator further comprises: an upstream endcap attached to an upstream endcap interface of the outer housing; and a ceramic sleeve disposed within the upstream endcap. ### Claim 15 (depends on 14) The HRS of claim 14, further comprising a piston carried by the inner member, the piston being movably received within the ceramic sleeve. ### Claim 16 (depends on 10) The HRS of claim 10, the outer member comprising a pressure compensation port. ### Claim 17 (depends on 10) The HRS of claim 10, wherein the isolator further comprises at least one of a drive unit and a drive nut carried by the inner member and disposed between the precompressed CCC and the precompressed RCC. ### Claim 18 (depends on 10) The HRS of claim 10, wherein the precompressed CCC comprises an axial stiffness higher than an axial stiffness of the precompressed RCC. ### Claim 19 (depends on 10) The HRS of claim 10, wherein at least one of the precompressed CCC and the precompressed RCC comprise a non-linear axial stiffness. ### Claim 20 (depends on 10) The HRS of claim 10, wherein the isolator is configured to at least one of attenuate transmission of a shock from the excitation source to the isolated mass, damp a vibration from the excitation source to the isolated mass, and isolate the isolated mass from a vibration emanating from the excitation source. ### Claim 21 (depends on 20) The HRS of claim 20, wherein the at least one of the shock from the excitation source and the vibration from the excitation source occur at an excitation frequency selected from the group of frequency ranges consisting of about 10 Hz to about 25 Hz and about 25 Hz to about 100 Hz. ### Claim 22 An isolator, comprising: an outer housing comprising an outer housing bore; an inner member received coaxially within the outer housing; a precompressed compression compliance component (CCC) disposed between the outer housing and the inner member, the precompressed CCC being configured to longitudinally bias the inner member in an axial direction; a precompressed rebound compliance component (RCC) disposed between the outer housing and the inner member, the precompressed RCC being configured to longitudinally bias the inner member in an opposite axial direction; an upstream endcap attached to an upstream endcap interface of the outer housing; a ceramic sleeve disposed within the upstream endcap; and a piston carried by the inner member, the piston being movably received within the ceramic sleeve.