GB1413453A - Hoist with cable tensioning device - Google Patents
Hoist with cable tensioning deviceInfo
- Publication number
- GB1413453A GB1413453A GB1393074A GB1393074A GB1413453A GB 1413453 A GB1413453 A GB 1413453A GB 1393074 A GB1393074 A GB 1393074A GB 1393074 A GB1393074 A GB 1393074A GB 1413453 A GB1413453 A GB 1413453A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- cable
- load
- sheave
- housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/02—Devices for facilitating retrieval of floating objects, e.g. for recovering crafts from water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/06—Servomotor systems without provision for follow-up action; Circuits therefor involving features specific to the use of a compressible medium, e.g. air, steam
- F15B11/072—Combined pneumatic-hydraulic systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20538—Type of pump constant capacity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/21—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
- F15B2211/212—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being accumulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/405—Flow control characterised by the type of flow control means or valve
- F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
- F15B2211/41572—Flow control characterised by the connections of the flow control means in the circuit being connected to a pressure source and an output member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
- F15B2211/41581—Flow control characterised by the connections of the flow control means in the circuit being connected to an output member and a return line
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/42—Flow control characterised by the type of actuation
- F15B2211/426—Flow control characterised by the type of actuation electrically or electronically
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/455—Control of flow in the feed line, i.e. meter-in control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/46—Control of flow in the return line, i.e. meter-out control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
- F15B2211/505—Pressure control characterised by the type of pressure control means
- F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
- F15B2211/50518—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using pressure relief valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
- F15B2211/505—Pressure control characterised by the type of pressure control means
- F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
- F15B2211/50545—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using braking valves to maintain a back pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
- F15B2211/55—Pressure control for limiting a pressure up to a maximum pressure, e.g. by using a pressure relief valve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/625—Accumulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
- F15B2211/7051—Linear output members
- F15B2211/7052—Single-acting output members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
- F15B2211/7051—Linear output members
- F15B2211/7053—Double-acting output members
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Jib Cranes (AREA)
- Actuator (AREA)
Abstract
1413453 Cable tensioning devices WESTINGHOUSE ELECTRIC CORP 29 March 1974 [4 April 1973] 13930/74 Heading B8B [Also in Division F2] A crane (3) which is mounted on the deck of a ship (1) comprises a boom (9) which is raised and lowered by means of a cable (15) wound on a drum (13) and a load lifting cable (23) which extends from a motor-driven hoist drum (7) and passes about a sheave (17) at the upper end of the boom (9) and then passes about a sheave 21 mounted on the piston-rod 37 of a ram (19) which is used to maintain a predetermined tension in the cable (23) during raising and lowering of a load (25), the cable (23) passing from the sheave 21 back to a second sheave (17) at the upper end of the boom (9) and then passing vertically downwardly to the load (25), Fig. 1 (not shown). The ram (19) is shown in Fig. 3 and consists of a housing 31 in which a first piston 33 is displaceable, the piston 33 dividing the housing 31 into chambers 39, 47, there being a piston-rod 37 extending from the piston 33 which carries the sheave 21, and a second piston 35 is located for movement between the end of the housing 31 and the first piston 33. A cylinder of pressurized gas 71 is connected by a conduit 73 to a gas inlet port 53 in the housing 31 and an adjustable pressure regulating valve 75 in the conduit 73 is adjusted to a predetermined pressure depending on the load to be lifted, and on opening a valve 77 in the conduit 73 pressurized gas is admitted to the chamber 39 and passes through openings 49 in the piston 33 to the chamber 47, the gas reacting on the piston 33 so that as a load is lifted through the water the pressurized gas absorbs shock and moves the piston 33, and thus the piston-rod 37 and sheave 21 in and out to pay out and take up the cable 23 thus keeping a generally constant tension in the cable 23. The volume of gaseous fluid in the system can be altered by means of an expansion chamber 85 which is connected to, and is filled by, the gas cylinder 71 simultaneously with the supply of gas to the chambers 39, 47. After the load has been lifted from the water additional lifting capacity is required due to the loss of buoyancy and by admitting hydraulic fluid from a reservoir 61 through an hydraulic control valve 67 and through a fluid inlet port 51 into a chamber 45 defined by the housing 31 and a second floating piston 35, the said piston 35 is moved towards the piston 33 to cause extension of the piston-rod 37, thereby raising the load. During this latter mode of operation the hoist drum (7) may be locked to prevent the paying out of the cable (23).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US347980A US3871527A (en) | 1973-04-04 | 1973-04-04 | Ram tensioning device |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1413453A true GB1413453A (en) | 1975-11-12 |
Family
ID=23366144
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1393074A Expired GB1413453A (en) | 1973-04-04 | 1974-03-29 | Hoist with cable tensioning device |
Country Status (8)
Country | Link |
---|---|
US (1) | US3871527A (en) |
JP (1) | JPS49135352A (en) |
DE (1) | DE2414181A1 (en) |
ES (1) | ES424907A1 (en) |
FR (1) | FR2224395B1 (en) |
GB (1) | GB1413453A (en) |
IT (1) | IT1009663B (en) |
NL (1) | NL7404226A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4179233A (en) * | 1977-07-14 | 1979-12-18 | National Advanced Drilling Machines, Inc. | Vertical motion compensated crane apparatus |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1505645A (en) * | 1974-07-30 | 1978-03-30 | Stothert & Pitt Ltd | Apparatus for use in raising or lowering a load in a condition of relative motion |
US4021019A (en) * | 1975-03-24 | 1977-05-03 | British Columbia Research Council | Heave compensating cranes |
US4050359A (en) * | 1975-09-04 | 1977-09-27 | Brunswick Corporation | Hydraulic power trim and power tilt system supply |
US4005780A (en) * | 1975-11-10 | 1977-02-01 | The Manitowoc Company, Inc. | Boom stop and back hitch compensating system |
US4145959A (en) * | 1977-02-23 | 1979-03-27 | Teledyne Mccormick Selph, An Operating Division Of Teledyne Industries, Inc. | Constant speed actuator |
NL167132C (en) * | 1977-05-09 | 1981-11-16 | Hydraudyne Bv | DEVICE FOR HANGING A LOAD FROM A VESSEL UNDER THE WATERLINE. |
DE2748674A1 (en) * | 1977-10-29 | 1979-05-10 | Hydraulik Brattvaag As | Rough sea load transfer unit - subjects crane hook to wave movement in synchronism with relative movement |
US4268013A (en) * | 1978-06-12 | 1981-05-19 | Nl Industries, Inc. | Crane motion compensator |
US4354608A (en) * | 1979-06-08 | 1982-10-19 | Continental Emsco Company | Motion compensator and control system for crane |
FR2494244A1 (en) * | 1980-11-17 | 1982-05-21 | Bretagne Atel Chantiers | Crane for lifting and depositing loads - has hydraulic crane cable actuator operative to compensate between two relatively vertically movable support surfaces e.g. dock and ship |
FR2496624A1 (en) * | 1980-12-23 | 1982-06-25 | Bretagne Atel Chantiers | DEVICE FOR SHOCK ABSORBING BETWEEN A LOAD AND A FLOATING SUPPORT AT THE TIME OF REMOVAL OF THE LOAD |
US4516473A (en) * | 1981-05-07 | 1985-05-14 | Shokestu Kinzoku Kogyo Kabushiki Kaisha | Cylinder driving system |
US4494631A (en) * | 1982-09-27 | 1985-01-22 | Sloan Valve Company | Combination air cylinder and hydraulic slack adjuster |
DE3430085A1 (en) * | 1984-08-16 | 1986-02-27 | PHB Weserhütte AG, 5000 Köln | PLASTIC-ELASTIC SLIDING JOINT TO BE INSERTED INTO THE LOAD ROPE OF LIFTS |
US4688764A (en) * | 1984-10-31 | 1987-08-25 | Nl Industries, Inc. | Crown block compensator |
US4850571A (en) * | 1988-04-11 | 1989-07-25 | United States Of America | Connector assembly |
US5140894A (en) * | 1991-01-16 | 1992-08-25 | Axelson, Inc. | Gas spring actuator |
US5965994A (en) * | 1997-06-20 | 1999-10-12 | Seo; Dong Il | Automatic vertical moving systems and control methods therefor |
GB0205252D0 (en) * | 2002-03-06 | 2002-04-17 | Stolt Offshore Ltd | Method and apparatus for deploying articles deep waters |
NL1023814C2 (en) * | 2003-07-03 | 2005-01-04 | Itrec Bv | Hydraulic crane for e.g. boat, has pressure regulating valve in line between hydraulic devices connected to chamber pressure and top cable load sensors |
US7389973B1 (en) * | 2007-02-15 | 2008-06-24 | Samson Rope Technologies | Tensioning systems and methods for line spooling |
GB0705110D0 (en) * | 2007-03-16 | 2007-04-25 | Lewis Ltd | Wireline intervention system |
NO334789B1 (en) * | 2011-04-04 | 2014-05-26 | Rolls Royce Marine As | Device for tensioning a rope or cable |
US8770272B2 (en) | 2011-05-18 | 2014-07-08 | Halliburton Energy Services, Inc. | Managing tensile forces in a cable |
US9174705B2 (en) * | 2013-04-11 | 2015-11-03 | Terje W. Eilertsen | Compensated lashing of tender assist drilling unit to a floating production facility |
CN109399456B (en) * | 2017-08-18 | 2020-05-19 | 天海融合防务装备技术股份有限公司 | Hoisting equipment with lifting rope motion sensing mechanism and hoisting control method thereof |
US10669137B2 (en) * | 2017-09-25 | 2020-06-02 | Wt Industries, Llc | Heave compensation system |
CN109230904B (en) * | 2018-08-14 | 2023-11-03 | 中国南方电网有限责任公司超高压输电公司广州局海口分局 | Cable direction follow-up ROV winch applied to unpowered positioning mother ship |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2588037A (en) * | 1950-09-30 | 1952-03-04 | Orton Crane & Shovel Company | Tagline mechanism |
US2897907A (en) * | 1955-08-31 | 1959-08-04 | Jersey Prod Res Co | Weight handling mechanism |
US3265218A (en) * | 1963-02-07 | 1966-08-09 | Giovannetti Macchine S P A | Side boom pipe layer |
DE1301026B (en) * | 1964-11-14 | 1969-08-14 | Reinhard Hoernlein Kg Holz Und | Hydropneumatic lifting unit, especially for height-adjustable tables and chairs |
US3311351A (en) * | 1966-02-02 | 1967-03-28 | William W Blakely | Shock absorbing device |
GB1232598A (en) * | 1967-11-13 | 1971-05-19 | ||
NL140448B (en) * | 1969-04-24 | 1973-12-17 | Ihc Holland Nv | PNEUMATIC IMPACT TOOL. |
US3719041A (en) * | 1971-02-05 | 1973-03-06 | Secr Defence | Temperature-responsive control for gas turbine engines |
-
1973
- 1973-04-04 US US347980A patent/US3871527A/en not_active Expired - Lifetime
-
1974
- 1974-03-23 DE DE2414181A patent/DE2414181A1/en active Pending
- 1974-03-28 NL NL7404226A patent/NL7404226A/xx not_active Application Discontinuation
- 1974-03-29 GB GB1393074A patent/GB1413453A/en not_active Expired
- 1974-04-02 FR FR7411656A patent/FR2224395B1/fr not_active Expired
- 1974-04-03 ES ES424907A patent/ES424907A1/en not_active Expired
- 1974-04-04 JP JP49037469A patent/JPS49135352A/ja active Pending
- 1974-04-08 IT IT20680/74A patent/IT1009663B/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4179233A (en) * | 1977-07-14 | 1979-12-18 | National Advanced Drilling Machines, Inc. | Vertical motion compensated crane apparatus |
Also Published As
Publication number | Publication date |
---|---|
ES424907A1 (en) | 1976-06-01 |
JPS49135352A (en) | 1974-12-26 |
US3871527A (en) | 1975-03-18 |
FR2224395B1 (en) | 1978-01-13 |
DE2414181A1 (en) | 1974-10-24 |
NL7404226A (en) | 1974-10-08 |
FR2224395A1 (en) | 1974-10-31 |
IT1009663B (en) | 1976-12-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |