초록 ▼

A bicycle cable disc brake is provided a disc brake pad adjustment mechanism to adjust the spacing between the friction pads. Basically, the cable disc brake has a first caliper housing portion containing a cable actuated mechanism, and a second caliper housing portion containing the disc brake pad

A bicycle cable disc brake is provided a disc brake pad adjustment mechanism to adjust the spacing between the friction pads. Basically, the cable disc brake has a first caliper housing portion containing a cable actuated mechanism, and a second caliper housing portion containing the disc brake pad adjustment mechanism. The disc brake pad adjustment mechanism has a caliper housing portion, an adjusting axle, an adjusting plate and an adjustment biasing member. The adjusting axle movably is coupled to the caliper housing portion to rotate about a longitudinal axis of the adjusting axle. The adjusting plate is coupled to the adjusting axle to move axially along the longitudinal axis of the adjusting axle upon rotation of the adjusting axle relative to the caliper housing portion. The adjustment biasing member is operatively disposed between the caliper housing portion and the adjusting axle and arranged to axially urge the adjusting axle against the caliper housing portion. The adjusting axle and the caliper housing portion is configured with an indexing arrangement therebetween to selectively retain the adjusting axle in a predetermined angular position about along the longitudinal axis of the adjusting axle relative to the caliper housing portion.

대표청구항 ▼

A bicycle cable disc brake is provided a disc brake pad adjustment mechanism to adjust the spacing between the friction pads. Basically, the cable disc brake has a first caliper housing portion containing a cable actuated mechanism, and a second caliper housing portion containing the disc brake pad

A bicycle cable disc brake is provided a disc brake pad adjustment mechanism to adjust the spacing between the friction pads. Basically, the cable disc brake has a first caliper housing portion containing a cable actuated mechanism, and a second caliper housing portion containing the disc brake pad adjustment mechanism. The disc brake pad adjustment mechanism has a caliper housing portion, an adjusting axle, an adjusting plate and an adjustment biasing member. The adjusting axle movably is coupled to the caliper housing portion to rotate about a longitudinal axis of the adjusting axle. The adjusting plate is coupled to the adjusting axle to move axially along the longitudinal axis of the adjusting axle upon rotation of the adjusting axle relative to the caliper housing portion. The adjustment biasing member is operatively disposed between the caliper housing portion and the adjusting axle and arranged to axially urge the adjusting axle against the caliper housing portion. The adjusting axle and the caliper housing portion is configured with an indexing arrangement therebetween to selectively retain the adjusting axle in a predetermined angular position about along the longitudinal axis of the adjusting axle relative to the caliper housing portion. 9701000, Mascaro; US-3650332, 19720300, Dedoes, 172/022; US-3867052, 19750200, Durham, 404/121; US-3881553, 19750500, Angeski, 172/022; US-4192387, 19800300, Stinson; US-4427076, 19840100, De Aberasturi, 172/548; US-4723607, 19880200, Hansen; US-4773486, 19880900, Huber et al.; US-D300223, 19890300, Livingstone; US-4924944, 19900500, Cozine et al.; US-5119880, 19920600, Zehrung, Jr. et al.; US-5353724, 19941000, Wheeley, Jr.; US-5488917, 19960200, Santoli et al., 111/091; US-5520253, 19960500, Kesting, 172/125; US-5586604, 19961200, Postema, 172/021; US-5662172, 19970900, Brown, 172/022; US-5673756, 19971000, Classen; US-5680903, 19971000, Oliver; US-5690179, 19971100, Dickson, 172/021; US-5823269, 19981000, Leclerc; US-5896931, 19990400, Roberts et al., 172/042; US-6102129, 20000800, Classen; US-6179061, 20010100, Fiore; US-6422321, 20020700, Dillon, 172/021 means for mixing the additive with the water is a manifold. 15. A system as in claim 1 wherein the actuator is a hydraulic cylinder. 16. A system as in claim 1 wherein the pump displacement sensor is a linear variable displacement transducer. 17. A system as in claim 1 wherein the additive pump is a piston pump. 18. A system as in claim 17 wherein the additive pump is a double-acting piston pump. 19. An apparatus for mixing water and an additive in a firefighting vehicle, the apparatus comprising: a programmable logic controller; a water flow sensor responsive to a source of pressurized water and electronically coupled to the controller; a hydraulic pump; an actuator fluidly connected to and driven by the hydraulic pump; an additive pump mechanically coupled to the actuator and fluidly connected to a source of additive; and an additive pump displacement sensor configured to sense the position of the additive pump, the pump displacement sensor being in communication with the controller. 20. An apparatus as in claim 19 wherein the hydraulic pump is driven by a hydraulic pump motor. 21. An apparatus as in claim 19 further comprising: a proportioning valve fluidly connected to the hydraulic pump and the actuator. 22. A system as in claim 21 wherein the proportioning valve is in communication with the controller. 23. An apparatus as in claim 22 wherein the controller provides communication between the water flow sensor, the proportioning valve, and the additive pump to maintain a pre-determined ratio of additive to water. 24. An apparatus as in claim 19, further comprising: a means for mixing the additive with the water. 25. An apparatus as in claim 24 wherein the means for mixing the additive with the water is a manifold. 26. An apparatus as in claim 19 wherein the actuator is a hydraulic cylinder. 27. An apparatus as in claim 19 wherein the pump displacement sensor is a linear variable displacement transducer. 28. An apparatus as in claim 19 wherein the additive pump is a piston pump. 29. An apparatus as in claim 28 wherein the additive pump is a double acting piston pump. 30. An apparatus as in claim 19 wherein wherein the programmable logic controller adjusts the additive pump speed in response to the sensed direction of the additive pump. 31. An additive proportioning apparatus comprising: an actuator; an additive pump coupled to and driven by the actuator; wherein the actuator is coupled to a linear variable displacement transducer that senses the position of the additive pump. 32. An apparatus as in claim 31 wherein the additive pump is a positive displacement piston pump. 33. An apparatus as in claim 32 wherein the additive pump is a double acting pump. 34. An apparatus as in claim 31 wherein the actuator is a positive displacement piston pump. 35. An apparatus as in claim 31 wherein the additive is a thixotropic substance. 36. A method of maintaining a desired additive to water ratio in a fire-fighting system comprising the steps of: inputting into a controller a pre-determined additive to water ratio; sensing the water flow rate; computing the additive flow rate by determining the position of a positive displacement piston pump at at least two defined intervals; computing the actual additive to water ratio based on the sensed water flow and additive flow rates; comparing the computed ratio with the input ratio; and adjusting the output of the positive displacement pump to substantially match the input ratio. 37. A method as in claim 36, further comprising the steps of: re-sensing the water flow rate; re-sensing the additive flow rate; re-computing the actual additive to water ratio; re-comparing the computed ratio with the input ratio; and re-adjusting the output of the positive displacement pump. 38. A method as in claim 36 wherein the additive is a thixotropic substance. A turf aerator consisting of a cast concrete roller having an axis of rotation, and having an annular surface displaced radially away from the axis of rotation; first and second radial arrays of tubular tines, each tine among the radial arrays having inner and outer ends, and having soil input and soil output ports; and mounting lug and tine receiving channel combinations attaching the radial arrays of tubular tines to opposite ends of the concrete roller so that the outer ends of such tines extend outwardly from the annular surface of the roller, and so that the inner ends of the tines extend inwardly from the annular surface. he second explosive carrying member such that the first and second explosive carrying members are rotatable and angularly displaceable relative to one another; a first explosive device disposed in the first explosive cavity; and a second explosive device disposed in the second explosive cavity and spaced from the first explosive device such that when one of the first and second explosive devices is initiated, the other of the first and second explosive devices will in turn be initiated. 2. The bi-directional explosive transfer subassembly as recited in claim 1 wherein the first explosive device further includes a first shaped charge and the second explosive device further includes a second shaped charge and wherein the first and second shaped charges face one another and are each adapted for sending an explosive jet toward the other shaped charge, thereby providing an explosive transfer therebetween. 3. The bi-directional explosive transfer subassembly as recited in claim 1 wherein the first and second explosive cavities are separated by portions of the first and second explosive carrying members. 4. The bi-directional explosive transfer subassembly as recited in claim 1 wherein the first explosive carrying member further comprises a first wall portion and the second explosive carrying member further comprises a second wall portion that is adjacent to the first wall portion, thereby separating the first and second explosive cavities. 5. The bi-directional explosive transfer subassembly as recited in claim 1 wherein each of the first and second explosive devices further comprises a booster, a length of detonating cord connected to the booster and a detonating cord initiator connected to the detonating cord. 6. The bi-directional explosive transfer subassembly as recited in claim 1 wherein the first explosive carrying member further includes a cylindrical portion extending integrally from the ball end and wherein the second explosive carrying member has a flange portion extending from the socket, the flange portion having a conically shaped inner surface having an angle relative to a longitudinal axis of the second explosive carrying member that defines the maximum angular displacement between the first and second explosive carrying members when the cylindrical portion of the first explosive carrying member contacts the flange portion of the second explosive carrying member. 7. The bi-directional explosive transfer subassembly as recited in claim 1 wherein the maximum angular displacement between the first and second explosive carrying members is between about 1 and about 10 degrees. 8. The bi-directional explosive transfer subassembly as recited in claim 1 wherein the maximum angular displacement between the first and second explosive carrying members is about 5 degrees. 9. A bi-directional explosive transfer subassembly for coupling two explosive tools comprising: a first explosive carrying member having a ball end and a first explosive cavity that extends into the ball end; a second explosive carrying member having a socket and a second explosive cavity, the ball end of the first explosive carrying member slidingly received in the socket of the second explosive carrying member such that the first and second explosive carrying members are rotatable and angularly displaceable relative to one another; a first explosive device including a first shaped charge disposed in the ball end of the first explosive cavity; and a second explosive device including a second shaped charge disposed in the second explosive cavity and spaced from the first explosive device wherein the first and second shaped charges face one another and are each adapted for sending an explosive jet toward the other shaped charge, thereby providing an explosive transfer therebetween. 10. The bi-directional explosive transfer subassembly as recited in claim 9 wherein the first and second explosive cavities are separated by portions of the first and seco nd explosive carrying members. 11. The bi-directional explosive transfer subassembly as recited in claim 9 wherein the first explosive carrying member further comprises a first wall portion and the second explosive carrying member further comprises a second wall portion that is adjacent to the first wall portion, thereby separating the first and second explosive cavities. 12. The bi-directional explosive transfer subassembly as recited in claim 9 wherein each of the first and second explosive devices further comprises a booster, a length of detonating cord connected to the booster and a detonating cord initiator connected to the detonating cord. 13. The bi-directional explosive transfer subassembly as recited in claim 9 wherein the first explosive carrying member further includes a cylindrical portion extending integrally from the ball end and wherein the second explosive carrying member has a flange portion extending from the socket, the flange portion having a conically shaped inner surface having an angle relative to a longitudinal axis of the second explosive carrying member that defines the maximum angular displacement between the first and second explosive carrying members when the cylindrical portion of the first explosive carrying member contacts the flange portion of the second explosive carrying member. 14. The bi-directional explosive transfer subassembly as recited in claim 9 wherein the maximum angular displacement between the first and second explosive carrying members is between about 1 and about 10 degrees. 15. The bi-directional explosive transfer subassembly as recited in claim 9 wherein the maximum angular displacement between the first and second explosive carrying members is about 5 degrees. 16. A well perforating apparatus comprising: first and second perforating guns; and a bi-directional explosive transfer subassembly interconnecting the first and second perforating guns, the bi-directional explosive transfer subassembly comprising: a first explosive carrying member coupled to the first perforating gun, the first explosive carrying member having a ball end and a first explosive cavity that extends into the ball end; a second explosive carrying member coupled to the second perforating gun, the second explosive carrying member having a socket and a second explosive cavity, the ball end of the first explosive carrying member slidingly received in the socket of the second explosive carrying member such that the first and second explosive carrying members are rotatable and angularly displaceable relative to one another; and first and second explosive devices disposed respectively in the first and second explosive cavities and spaced apart such that when one of the first and second explosive devices is initiated, the other of the first and second explosive devices will in turn be initiated, thereby transferring explosive between the first and second perforating guns. 17. The apparatus as recited in claim 16 wherein the first explosive device further includes a first shaped charge and the second explosive device further includes a second shaped charge and wherein the first and second shaped charges face one another and are each adapted for sending an explosive jet toward the other shaped charge, thereby providing an explosive transfer therebetween. 18. The apparatus as recited in claim 16 wherein the first and second explosive cavities are separated by portions of the first and second explosive carrying members. 19. The apparatus as recited in claim 16 wherein the first explosive carrying member further comprises a first wall portion and the second explosive carrying member further comprises a second wall portion that is adjacent to the first wall portion, thereby separating the first and second explosive cavities. 20. The apparatus as recited in claim 16 wherein each of the first and second explosive devices further comprises a booster, a length of detonating cord connected to the booster and a det onating cord initiator connected to the detonating cord. 21. The apparatus as recited in claim 16 wherein the first explosive carrying member further includes a cylindrical portion extending integrally from the ball end and wherein the second explosive carrying member has a flange portion extending from the socket, the flange portion having a conically shaped inner surface having an angle relative to a longitudinal axis of the second explosive carrying member that defines the maximum angular displacement between the first and second explosive carrying members when the cylindrical portion of the first explosive carrying member contacts the flange portion of the second explosive carrying member. 22. The apparatus as recited in claim 16 wherein the maximum angular displacement between the first and second explosive carrying members is between about 1 and about 10 degrees. 23. The apparatus as recited in claim 16 wherein the maximum angular displacement between the first and second explosive carrying members is about 5 degrees. 24. A method of perforating a well comprising the steps of: deploying a string of perforating guns in a wellbore, the string having first and second perforating guns with a bi-directional explosive transfer subassembly disposed therebetween, the bi-directional explosive transfer subassembly comprising a first explosive carrying member having a ball end and a first explosive cavity that extends into the ball end and a second explosive carrying member having a socket and a second explosive cavity, the first and second explosive carrying members are rotatable and angularly displaceable relative to one another, the first and second explosive carrying members respectively carrying first and second explosive devices; firing one of the first and second perforating guns; igniting one of the first and second explosive devices; igniting the other of the first and second explosive devices; and firing the other of the first and second perforating guns, thereby transferring the explosive and sequentially firing the string of perforating guns. 25. The method as recited in claim 24 wherein the step of rotatably and angularly displacing the first and second explosive carrying members relative to one another further comprises slidingly receiving a ball end of the first explosive carrying member within a socket of the second explosive carrying member. 26. The method as recited in claim 24 wherein the step of igniting one of the first and second explosive devices further comprises igniting a first shaped charge and wherein the step of igniting the other of the first and second explosive devices further comprises igniting a second shaped charge in response to an explosive jet of the first shaped charge. 27. The method as recited in claim 24 further comprising the step of separating the first and second explosive cavities with portions of the first and second explosive carrying members. 28. The method as recited in claim 24 further comprising the step of defining the maximum angular displacement between the first and second explosive carrying members to be between about 1 and about 10 degrees. 29. The method as recited in claim 24 further comprising the step of defining the maximum angular displacement between the first and second explosive carrying members to be about 5 degrees. 30. An explosive transfer subassembly for coupling two explosive tools comprising: a first explosive carrying member having a ball end and a first explosive cavity that extends into the ball end; a second explosive carrying member having a socket and a second explosive cavity, the ball end of the first explosive carrying member slidingly received in the socket of the second explosive carrying member such that the first and second explosive carrying members are rotatable and angularly displaceable relative to one another; a first explosive device disposed in the first explosive cavity; and a second explosive device disposed in the second