Coupling device

Claim 2

A coupling device for one end of a pipe and having: a. said pipe being provided with a pipe groove adjacent said one end; b. a coupling member provided with a coupling groove; c. a lock sleeve having a pipe groove tab and a coupling groove tab; d. said lock sleeve being insertable into said coupling member so that said coupling groove tab locks in said coupling groove and disposable on said one end of said pipe so that said pipe groove tab locks in Said pipe groove thereby securing said coupling member to said one end of said pipe; and e. one tab of said coupling groove tab and said pipe groove tab being corrugated.

Claim 3

A coupling device for one end of a pipe and having: a. said pipe being provided with a pipe groove adjacent said one end; b. a coupling member provided with a coupling groove; c. a lock sleeve having a pipe groove tab and a coupling groove tab; d. said lock sleeve being insertable into said coupling member so that said coupling groove tab locks in said coupling groove and disposable on said one end of said pipe so that said pipe groove tab locks in said pipe groove thereby securing said coupling member to said one end of said pipe; and e. one tab of said coupling groove tab and said pipe groove tab being serrated.

Claim 4

A coupling device for one end of a pipe and having: a. said pipe being provided with a pipe groove adjacent said one end; b. a coupling member provided with a coupling groove; c. a lock sleeve having a pipe groove tab and a coupling groove tab; d. said lock sleeve being insertable into said coupling member so that said coupling groove tab locks in said coupling groove and disposable on said one end of said pipe so that said pipe groove tab locks in said pipe groove thereby securing said coupling member to said one end of said pipe; and e. one tab of said coupling groove tab and said pipe groove tab being serrated.

Claim 5

A coupling device for one end of a pipe and having: a. said pipe being provided with a pipe groove adjacent said one end; b. a coupling member provided with a coupling groove; c. a lock sleeve having a pipe groove tab and a coupling groove tab; d. said lock sleeve being insertable into said coupling member so that said coupling groove tab locks in said coupling groove and disposable on said one end of said pipe so that said pipe groove tab locks in said pipe groove thereby securing said coupling member to said one end of said pipe; and e. one tab of said coupling groove tab and said pipe groove tab being arcuate in cross section.

Claim 6

A coupling device for one end of a pipe and having: a. said pipe being provided with a pipe groove adjacent said one end; b. a coupling member provided with a coupling groove; c. a lock sleeve having a pipe groove tab and a coupling groove tab; d. said lock sleeve being insertable into said coupling member so that said coupling groove tab locks in said coupling groove and disposable on said one end of said pipe so that said pipe groove tab locks in said pipe groove thereby securing said coupling member to said one end of said pipe; and e. one tab of said coupling groove tab and said pipe groove tab being arcuate in cross section.

Claim 7

A coupling device for one end of a pipe and having: a. said pipe being provided with a pipe groove adjacent said one end; b. a coupling member provided with a coupling groove; c. a lock sleeve having a pipe groove tab and a coupling groove tab; d. said lock sleeve being insertable into said coupling member so that said coupling groove tab locks in said coupling groove and disposable on said one end of said pipe so that said pipe groove tab locks in said pipe groove thereby securing said coupling member to said one end of said pipe; and e. one tab of said coupling groove tab and said pipe groove tab being provided with a protuberance.

Claim 8

A coupling device for one end of a pipe and having: a. said pipe being provided with a pipe groove adjacent said one end; b. a coupling member provided with a coupling groove; c. a lock sleeve having a pipe groove tab and a coupling groove tab; d. said lock sleeve being insertable into said coupling member so that said coupling groove tab locks in said coupling groove and disposable on said one end of said pipe so that said pipe groove tab locks in said pipe groove thereby securing said coupling member to said one end of said pipe; and e. one tab of said coupling groove tab and said pipe groove tab being provided with a protuberance.

Claim 9

A coupling device for one end of a pipe and having: a. said pipe being provided with a pipe groove adjacent said one end of said pipe; b. a coupling member provided with a coupling groove and having a central portion disposed inwardly of said coupling groove and a resilient sealing washer on said central portion; c. a lock sleeve having a pipe groove tab and a coupling groove tab; d. said lock sleeve being movable onto said one end of said pipe so that said pipe groove tab of said lock sleeve registers with and locks in said pipe groove on said one end of said pipe to lock said lock sleeve to said one end of said pipe; e. a key sleeve provided with a tab slot for controlling the position of said coupling groove tab on said lock sleeve and movable onto said lock sleeve so that said tab slot in said key sleeve depresses said coupling groove tab on said lock sleeve; f. said coupling member being movable onto said key sleeve so that said coupling groove in said coupling member is substantially in registry with said coupling groove tab of said lock sleeve, but said coupling groove tab of said lock sleeve does not enter said coupling groove in said coupling member; g. said coupling member being further movable on said key sleeve relative to said one end of said pipe to compress said resilient sealing washer thereby permitting said coupling groove tab on said lock sleeve to pass through said tab slot in said key sleeve and to lock in said coupling groove in said coupling member and locking said key sleeve and said coupling member to said lock sleeve; h. said key sleeve being therefore movable on said lock sleeve away from said one end of said pipe to move said coupling groove tab on said lock sleeve out of said coupling groove in said coupling member to permit relative removal movement between said one end oF said pipe and said lock sleeve and said key sleeve and said coupling member.

Claim 10

A coupling device for one end of a pipe and having: a. said pipe being provided with a pipe groove adjacent said one end of said pipe; b. a coupling member provided with a coupling groove and having a central portion disposed inwardly of said coupling groove and a resilient sealing washer on said central portion; c. a lock sleeve having a pipe groove tab and a coupling groove tab; d. said lock sleeve being movable onto said one end of said pipe so that said pipe groove tab of said lock sleeve registers with and locks in said pipe groove on said one end of said pipe to lock said lock sleeve to said one end of said pipe; e. a key sleeve provided with a tab slot for controlling the position of said coupling groove tab on said lock sleeve and movable onto said lock sleeve so that said tab slot in said key sleeve depresses said coupling groove tab on said lock sleeve; f. said coupling member being movable onto said key sleeve so that said coupling groove in said coupling member is substantially in registry with said coupling groove tab of said lock sleeve, but said coupling groove tab of said lock sleeve does not enter said coupling groove in said coupling member; g. said coupling member being further movable on said key sleeve relative to said one end of said pipe to compress said resilient sealing washer thereby permitting said coupling groove tab on said lock sleeve to pass through said tab slot in said key sleeve and to lock in said coupling groove in said coupling member and locking said key sleeve and said coupling member to said lock sleeve; h. said key sleeve being therefore movable on said lock sleeve away from said one end of said pipe to move said coupling groove tab on said lock sleeve out of said coupling groove in said coupling member to permit relative removal movement between said one end oF said pipe and said lock sleeve and said key sleeve and said coupling member.

Claim 11

The coupling device recited in claim 5 wherein said lock sleeve has stop means for limiting the movement of said key sleeve with respect to said lock sleeve.

Claim 12

The coupling device recited in claim 5 wherein said lock sleeve has a locking safety tab and said key sleeve is provided with a locking tab slot, said locking tab slot being operable to limit the movement of said key sleeve with respect to said lock sleeve.

Claim 13

The coupling device recited in claim 5 and having stop means disposed between said key sleeve and said lock sleeve.

Claim 14

The coupling device recited in claim 5 wherein one tab of said coupling groove tab and said pipe groove tab is straight in cross section.

Claim 15

The coupling device recited in claim 5 and having stop means on said pipe for limiting the movement of said lock sleeve with respect to said pipe.

Claim 16

The coupling device recited in claim 5 and having stop means on said pipe.

Claim 17

The coupling device recited in claim 5 and having stop means on said lock sleeve.

Claim 18

A coupling device for one end of a pipe and having: a. said pipe being provided with a pipe groove adjacent said one end; b. a coupling member provided with a coupling groove and having a central portion disposed inwardly of said coupling groove and a resilient sealing washer on said central portion; c. a lock sleeve having a pipe groove tab and a coupling groove tab; d. a key sleeve movable onto said one end of said pipe and provided with a tab slot for controlling the position of one of said lock sleeve tabs to clear said pipe groove in said one end of said pipe; e. said lock sleeve being movable onto said key sleeve so that said pipe groove tab on said lock sleeve locks in said pipe groove in said one end of said pipe so that lock sleeve is locked to said one end of said pipe; f. said coupling member being movable onto said lock sleeve so that said coupling groove in said coupling member is substantially in registry with said coupling groove tab on said lock sleeve but said coupling groove tab on said lock sleeve does not enter said coupling groove on said coupling member; g. said coupling member being movable on said key sleeve relative to said one end of said pipe to compress said resilient sealing washer thereby permitting said coupling groove tab on said lock sleeve to move into and to lock in said coupling groove in said coupling member and thereby lock said lock sleeve to said coupling member; h. said key sleeve being thereafter movable toward said one end of said pipe to move said pipe groove tab in said lock sleeve out of said pipe groove in said one end of said pipe to permit relative removal movement between said one end of said pipe and said key sleeve.

Claim 19

A coupling device for one end of a pipe and having: a. said pipe being provided with a pipe groove adjacent said one end; b. a coupling member provided with a coupling groove and having a central portion disposed inwardly of said coupling groove and a resilient sealing washer on said central portion; c. a lock sleeve having a pipe groove tab and a coupling groove tab; d. a key sleeve movable onto said one end of said pipe and provided with a tab slot for controlling the position of one of said lock sleeve tabs to clear said pipe groove in said one end of said pipe; e. said lock sleeve being movable onto said key sleeve so that said pipe groove tab on said lock sleeve locks in said pipe groove in said one end of said pipe so that lock sleeve is locked to said one end of said pipe; f. said coupling member being movable onto said lock sleeve so that said coupling groove in said coupling member is substantially in registry with said coupling groove tab on said lock sleeve but said coupling groove tab on said lock sleeve does not enter said coupling groove on said coupling member; g. said coupling member being movable on said key sleeve relative to said one end of said pipe to compress said resilient sealing washer thereby permitting said coupling groove tab on said lock sleeve to move into and to lock in said coupling groove in said coupling member and thereby lock said lock sleeve to said coupling member; h. said key sleeve being thereafter movable toward said one end of said pipe to move said pipe groove tab in said lock sleeve out of said pipe groove in said one end of said pipe to permit relative removal movement between said one end of said pipe and said key sleeve.