US5176050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toll for the application of predetermined torque to bolts, nuts and the like
Assignee: Norma Germany GmbH
•
Filing: 1991-02-06
•
Granted: 1993-01-05
•
Expires: 2011-02-06
Abstract
Abstract A tool for the application of selected torque to the polygonal head of a bolt, to a nut or to an analogous component has a first portion which is a snug fit on the polygonal part of the component, and a polygonal second portion which can be engaged and rotated by a wrench. The material of the tool is more readily deformable than the material of the component and the material of the wrench so that the wrench deforms the second portion and/or the component deforms the first portion of the tool when the component offers a selected resistance to further rotation, i.e., in response to the application of a selected torque to the component. The first portion can be bonded or molded to the torque-receiving part of the component to be rotated, and the second portion can be coated with a film of a color different from that of the second portion to facilitate visual determination of the condition of the second portion. The tool can be provided with a third portion which can be used for the application of a different torque, or the second portion can be deformed in two or more stages to permit the application of torque in several stages or to permit the application of one of two or more different torques.
Inventors
- 👤 Heinz Sauer
- 👤 Dieter Spindelbock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:06
CPC Classifications
B; B25; B25B; B25B23/00; B25B23/14; B25B23/1415; F; F16; F16B; F16B31/00; F16B31/02; F16B31/021
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
188 words
A torquing tool for applying a predetermined torque to bolts, nuts and analogous rotary components of the type having a non-circular torque receiving part which exhibits a first resistance to deformation, comprising a torque-transmitting first portion substantially complementary to and engageable with the torque-receiving part of a component; and a non-circular torque-receiving second portion engageable by a complementary torque-transmitting part of a wrench which latter exhibits a second resistance to deformation, said second portion being arranged to transmit torque to said first portion and at least one of said portions having an at least partially polygonal cross-sectional outline and including at least one facet and at least one edge adjacent said at least one facet, said at least one portion exhibiting a third resistance to deformation which is less than said first and second resistances so that, when the wrench rotates the second portion to apply torque to a component by way of said first portion, said at least one portion undergoes deformation in the region of said at least one edge and ceases to transmit torque when the component begins to offer a predetermined resistance to rotation.
Claim 2
Dependent Claim
188 words
A torquing tool for applying a predetermined torque to bolts, nuts and analogous rotary components of the type having a non-circular torque receiving part which exhibits a first resistance to deformation, comprising a torque-transmitting first portion substantially complementary to and engageable with the torque-receiving part of a component; and a non-circular torque-receiving second portion engageable by a complementary torque-transmitting part of a wrench which latter exhibits a second resistance to deformation, said second portion being arranged to transmit torque to said first portion and at least one of said portions having an at least partially polygonal cross-sectional outline and including at least one facet and at least one edge adjacent said at least one facet, said at least one portion exhibiting a third resistance to deformation which is less than said first and second resistances so that, when the wrench rotates the second portion to apply torque to a component by way of said first portion, said at least one portion undergoes deformation in the region of said at least one edge and ceases to transmit torque when the component begins to offer a predetermined resistance to rotation.
Claim 3
Dependent Claim
22 words
The tool of claim 1, wherein said first portion is configurated to be form-lockingly connected with the torque-receiving part of a component.
Claim 4
Dependent Claim
22 words
The tool of claim 1, wherein said second portion is configurated to be form-lockingly connected with the torque-transmitting part of a wrench.
Claim 5
Dependent Claim
51 words
The tool of claim 1, wherein said at least one portion includes a plurality of facets and a plurality of edges alternating with said facets, said at least one portion undergoing deformation in the regions of at least two of said edges when the component offers said predetermined resistance to rotation.
Claim 6
Dependent Claim
52 words
The tool of claim 1 for applying predetermined torque to components with a torque-receiving part having a slot for the working end of a screwdriver, wherein said first portion includes a socket having an internal projection which enters the slot when the torque-receiving part of a component is received in said socket.
Claim 7
Dependent Claim
23 words
The tool of claim 1, wherein said first portion is dimensioned to be a press fit on the torque-receiving part of the component.
Claim 8
Dependent Claim
20 words
The tool of claim 1, further comprising means for securing said first portion to the torque-receiving part of a component.
Claim 9
Dependent Claim
12 words
The tool of claim 7, wherein said securing means is an adhesive.
Claim 10
Dependent Claim
30 words
The tool of claim 1, wherein said second portion has an external surface provided with at least one projection which is frictionally engageable by the torque-transmitting part of a wrench.
Claim 11
Dependent Claim
18 words
The tool of claim 1, wherein at least said at least one portion consists of a plastic material.
Claim 12
Dependent Claim
18 words
The tool of claim 1, wherein at least said at least one portion consists of a metallic material.
Claim 13
Dependent Claim
17 words
The tool of claim 11, wherein at least said at least one form consists of cast metal.
Claim 14
Dependent Claim
20 words
The tool of claim 1, further comprising means for facilitating visual determination of deformation of said at least one portion.
Claim 15
Dependent Claim
199 words
A torquing tool for applying a predetermined torque to bolts, nuts and analogous rotary components of the type having a non-circular torque receiving part which exhibits a first resistance to deformation, comprising a torque-transmitting first portion substantially complementary to and engageable with the torque-receiving part of a component; and a non-circular torque-receiving second portion having an external surface engageable by a complementary torque-transmitting part of a wrench which latter exhibits a second resistance to deformation, said external surface having at least one protuberance and said second portion being arranged to transmit torque to said first portion, at least one of said portions exhibiting a third resistance to deformation which is less than said first and second resistances so that, when the wrench rotates the second portion to apply torque to a component by way of said first portion, said at least one portion undergoes deformation and ceases to transmit torque when the component begins to offer a predetermined resistance to rotation, said at least one protuberance being separated from said second portion when the component offers said predetermined resistance to rotation while the torque-transmitting part of a wrench engages said external surface and applies torque to said second portion.
Claim 16
Dependent Claim
199 words
A torquing tool for applying a predetermined torque to bolts, nuts and analogous rotary components of the type having a non-circular torque receiving part which exhibits a first resistance to deformation, comprising a torque-transmitting first portion substantially complementary to and engageable with the torque-receiving part of a component; and a non-circular torque-receiving second portion having an external surface engageable by a complementary torque-transmitting part of a wrench which latter exhibits a second resistance to deformation, said external surface having at least one protuberance and said second portion being arranged to transmit torque to said first portion, at least one of said portions exhibiting a third resistance to deformation which is less than said first and second resistances so that, when the wrench rotates the second portion to apply torque to a component by way of said first portion, said at least one portion undergoes deformation and ceases to transmit torque when the component begins to offer a predetermined resistance to rotation, said at least one protuberance being separated from said second portion when the component offers said predetermined resistance to rotation while the torque-transmitting part of a wrench engages said external surface and applies torque to said second portion.
Claim 17
Dependent Claim
28 words
The tool of claim 14, wherein said surface has a plurality of facets and edges alternating with said facets, a protuberance being provided at each of said edges.
Claim 18
Dependent Claim
82 words
The tool of claim 14, further comprising a non-circular torque-receiving third portion adjacent and arranged to transmit torque to said second portion, said third portion being engageable by a complementary torque-transmitting part of a wrench to rotate said second portion and said third portion exhibiting a fourth resistance to deformation such that said third portion undergoes deformation when the component which is engaged by the first portion begins to offer to rotation a second resistance which at most equals said predetermined resistance.
Claim 19
Dependent Claim
33 words
The tool of claim 16, wherein said third portion becomes separated from said first and second portions when the component which is engaged by said first portion offers said second resistance to rotation.
Claim 20
Dependent Claim
229 words
A torquing tool for applying a predetermined torque to bolts, nuts and analogous rotary components of the type having a non-circular torque receiving part which exhibits a first resistance to deformation, comprising a torque transmitting first portion substantially complementary to and engageable with the torque-receiving part of a component; a non-circular torque-receiving second portion engageable by a complementary torque-transmitting part of a wrench which latter exhibits a second resistance to deformation, said second portion being arranged to transmit torque to said first portion and at least one of said portions exhibiting a third resistance to deformation which is less than said first and second resistances so that, when the wrench rotates the second portion to apply torque to a component by way of said first portion, said at least one portion undergoes deformation and ceases to transmit torque when the component begins to offer a predetermined resistance to rotation; and a non-circular torque-receiving third portion adjacent and arranged to transmit torque to said first and second portions, said third portion being engageable by a complementary torque-transmitting part of a wrench to rotate said first and second portions and said third portion exhibiting a fourth resistance to deformation such that said third portion undergoes deformation when the component which is engaged by the first portion begins to offer to rotation a second resistance which at most equals said predetermined resistance.
Claim 21
Dependent Claim
229 words
A torquing tool for applying a predetermined torque to bolts, nuts and analogous rotary components of the type having a non-circular torque receiving part which exhibits a first resistance to deformation, comprising a torque transmitting first portion substantially complementary to and engageable with the torque-receiving part of a component; a non-circular torque-receiving second portion engageable by a complementary torque-transmitting part of a wrench which latter exhibits a second resistance to deformation, said second portion being arranged to transmit torque to said first portion and at least one of said portions exhibiting a third resistance to deformation which is less than said first and second resistances so that, when the wrench rotates the second portion to apply torque to a component by way of said first portion, said at least one portion undergoes deformation and ceases to transmit torque when the component begins to offer a predetermined resistance to rotation; and a non-circular torque-receiving third portion adjacent and arranged to transmit torque to said first and second portions, said third portion being engageable by a complementary torque-transmitting part of a wrench to rotate said first and second portions and said third portion exhibiting a fourth resistance to deformation such that said third portion undergoes deformation when the component which is engaged by the first portion begins to offer to rotation a second resistance which at most equals said predetermined resistance.
Claim 22
Dependent Claim
193 words
A torquing tool for applying a predetermined torque to bolts, nuts and analogous rotary components of the type having a non-circular torque receiving part which exhibits a first resistance to deformation, comprising a torque transmitting first portion substantially complementary to and engageable with the torque-receiving part of a component; a non-circular torque-receiving second portion engageable by a complementary torque-transmitting part of a wrench which latter exhibits a second resistance to deformation, said second portion being arranged to transmit torque to said first portion and at least one of said portions exhibiting a third resistance to deformation which is less than said first and second resistances so that, when the wrench rotates the second portion to apply torque to a component by way of said first portion, said at least one portion undergoes deformation and ceases to transmit torque when the component begins to offer a predetermined resistance to rotation, said at least one portion having a first color; and a film of a second color overlying said at least one portion, said film being at least partially removed in response to deformation of said at least one portion to expose said first color.
Claim 23
Dependent Claim
193 words
A torquing tool for applying a predetermined torque to bolts, nuts and analogous rotary components of the type having a non-circular torque receiving part which exhibits a first resistance to deformation, comprising a torque transmitting first portion substantially complementary to and engageable with the torque-receiving part of a component; a non-circular torque-receiving second portion engageable by a complementary torque-transmitting part of a wrench which latter exhibits a second resistance to deformation, said second portion being arranged to transmit torque to said first portion and at least one of said portions exhibiting a third resistance to deformation which is less than said first and second resistances so that, when the wrench rotates the second portion to apply torque to a component by way of said first portion, said at least one portion undergoes deformation and ceases to transmit torque when the component begins to offer a predetermined resistance to rotation, said at least one portion having a first color; and a film of a second color overlying said at least one portion, said film being at least partially removed in response to deformation of said at least one portion to expose said first color.
References Cited (Backward Citations)
US2260055A
Cited
US3331267A
Cited
DE2231949A1
Cited
FR2378969A1
Cited
DE2941438A1
Cited
FR2486852A1
Cited
FR2560100A3
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-01-05 | 1996-07-06 | 1997-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-01-05 | 2000-07-06 | 2001-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-01-05 | 2004-07-06 | 2005-01-05 | $7700.00 | Window Closed / Lapsed |