Fastener installation tool

Claim 2

A tool for applying a nut to a bolt, comprising: first means for torquing the nut onto the bolt, and second means operatively carried by said first means for radially inwardly crimping the nut onto the bolt after torquing, said second means including piston means actuable for crimping the nut, said first means carried by said piston means.

Claim 3

The tool of claim 1 with said first means including a hydraulically actuated gerotor motor.

Claim 4

The tool of claim 2 with said gerotor motor including an inner rotor and an outer rotor, a bearing rotatably supporting said outer rotor.

Claim 5

The tool of claim 3 with said gerotor motor having a cavity housing said bearing and having an inlet path and an outlet path and including conduit means for fluid communicating said inlet path with said cavity whereby said bearing is lubricated and pressurized.

Claim 6

A tool for applying a nut to a bolt, comprising: first means for torquing the nut onto the bolt, and second means operatively carried by said first means for crimping the nut onto the bolt after torquing, said first means including impact wrench means actuable for torquing the nut, said first means including a hydraulically actuated gerotor motor.

Claim 7

A tool for applying a nut to a bolt, comprising: first means for torquing the nut onto the bolt, and second means operatively carried by said first means for crimping the nut onto the bolt after torquing, said first means including impact wrench means actuable for torquing the nut, said first means including a hydraulically actuated gerotor motor.

Claim 8

The tool of claim 5 with said gerotor motor including an inner rotor and an outer rotor, a bearing rotatably supporting said outer rotor.

Claim 9

The tool of claim 6 with said gerotor motor having a cavity housing said bearing and having an inlet path and an outlet path and including conduit means for fluid communicating said inlet path with said cavity whereby said bearing is lubricated and pressurized.

Claim 10

The tool of claim 1 with said first means including impact wrench means actuable for torquing the nut.

Claim 11

The tool of claim 8 with said first means including a hydraulically actuated gerotor motor.

Claim 12

The tool of claim 9 with said gerotor motor including an inner rotor and an outer rotor, a bearing rotatably supporting said outer rotor.

Claim 13

The tool of claim 10 with said gerotor motor having a cavity housing said bearing and having an inlet path and an outlet path and including conduit means for fluid communicating said inlet path with said cavity whereby said bearing is lubricated and pressurized.

Claim 14

A tool for applying a nut to a bolt, comprising: a tubular housing, a hollow piston reciprocably mounted in said housing, torquing means for torquing the nut supported in said hollow piston, fluid motor means for driving said torquing means and supported in said hollow piston, and with said fluid motor means being hydraulically actuated, said housing defining a chamber in which said piston is reciprocably supported, inlet passage means for defining a hydraulic fluid path to said fluid motor, outlet passage means for defining a hydraulic fluid path from said fluid motor, one of said inlet and outlet passage means including at least a portion of said chamber.

Claim 15

A tool for applying a nut to a bolt, comprising: a tubular housing, a hollow piston reciprocably mounted in said housing, torquing means for torquing the nut supported in said hollow piston, fluid motor means for driving said torquing means and supported in said hollow piston, and with said fluid motor means being hydraulically actuated, said housing defining a chamber in which said piston is reciprocably supported, inlet passage means for defining a hydraulic fluid path to said fluid motor, outlet passage means for defining a hydraulic fluid path from said fluid motor, one of said inlet and outlet passage means including at least a portion of said chamber.

Claim 16

The tool of claim 12 with said fluid motor means comprising a hydraulically actuated gerotor motor.

Claim 17

The tool of claim 13 with said gerotor motor having a housing with a pair of outer annular grooves for defining fluid inlet and outlet feed paths.

Claim 18

The tool of claim 14 further comprising crimping means for crimping the nut and including a plurality of crimping jaws connected with said piston.

Claim 19

The tool of claim 15 including a jaw housing connected to said tubular housing and having pockets for securing said jaw members and having radially inclined surfaces for co-operating with said jaw members to move said jaw members radially inwardly and outwardly in response to reciprocation of said piston whereby the nut can be crimped.

Claim 20

The tool of claim 16 with said gerotor motor including an inner rotor and an outer rotor, a bearing rotatably supporting said outer rotor, said gerotor motor having a cavity housing said bearing and having an inlet path and an outlet path and including conduit means for fluid communicating said inlet path with said cavity whereby said bearing is lubricated and pressurized.