초록 ▼

A method of accurately centering and securely bonding a rod in a tubular shaft. Concentric alignment of the rod in the shaft is assured by positioning two resilient sealing rings between the rod and the shaft which act to center and hold the rod in proper geometric relationship with the shaft. While

A method of accurately centering and securely bonding a rod in a tubular shaft. Concentric alignment of the rod in the shaft is assured by positioning two resilient sealing rings between the rod and the shaft which act to center and hold the rod in proper geometric relationship with the shaft. While the invention is generally useful wherever secure bonding of a male fitting in a tubular shaft is desired, it is particularly applicable where accurate centering of the fitting in the shaft is necessary, such as in the bonding of a universal joint fitting in a drive shaft.

대표청구항 ▼

A process for securely bonding a rod concentrically in a tubular shaft which comprises: (1) fitting a pair of parallel annular grooves positioned near the base and top of the mating portion of the rod with a pair of resilient sealing rings having inner diameters such that they are retained in place

A process for securely bonding a rod concentrically in a tubular shaft which comprises: (1) fitting a pair of parallel annular grooves positioned near the base and top of the mating portion of the rod with a pair of resilient sealing rings having inner diameters such that they are retained in place by the grooves and outer diameters greater than that of the mating portion, said sealing rings being designed to fit snugly into the tubular shaft and form a tight fit between the mating portion and the shaft; (2) inserting the base of the mating portion containing the first of said resilient sealing rings into one end of the tubular shaft so as to compress said resilient sealing ring snugly between the mating portion and the inner circumference of that end of said tubular shaft, said end of said tubular shaft having the neck of a funnel tightly fitted about its outer circumference; (3) filling the funnel with a suitable liquid bonding agent; (4) further inserting the mating portion of the rod into the tubular shaft, thereby creating a vacuum in the annular spacing between said Mating portion and said tubular shaft so as to cause the bonding agent in the funnel to flow into and fill said annular spacing; (5) continuing to insert the mating portion of the rod into the tubular shaft until the annular space between said mating portion and said tubular shaft has been completely filled with bonding agent and the second resilient sealing ring at the top of the mating portion has been forced into the shaft and snugly compressed between said mating portion and said tubular shaft, thereby entrapping and sealing said bonding agent in said annular space; and (6) curing said bonding agent to the thermoset state so as to bond the shaft and the mating portion of the rod together in concentric alignment.