CA2616478A1 - Fastener with removable element - Google Patents

Fastener with removable element Download PDF

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Publication number
CA2616478A1
CA2616478A1 CA 2616478 CA2616478A CA2616478A1 CA 2616478 A1 CA2616478 A1 CA 2616478A1 CA 2616478 CA2616478 CA 2616478 CA 2616478 A CA2616478 A CA 2616478A CA 2616478 A1 CA2616478 A1 CA 2616478A1
Authority
CA
Canada
Prior art keywords
threaded section
shank
section
outer diameter
tip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA 2616478
Other languages
French (fr)
Other versions
CA2616478C (en
Inventor
Yu-Sheng Tseng
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CA 2616478 priority Critical patent/CA2616478C/en
Publication of CA2616478A1 publication Critical patent/CA2616478A1/en
Application granted granted Critical
Publication of CA2616478C publication Critical patent/CA2616478C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
    • F16B35/041—Specially-shaped shafts
    • F16B35/044—Specially-shaped ends
    • F16B35/045—Specially-shaped ends for retention or rotation by a tool
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
    • F16B35/041—Specially-shaped shafts
    • F16B35/044—Specially-shaped ends
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
    • F16B23/0007—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool
    • F16B23/0038—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool substantially prismatic with up to six edges, e.g. triangular, square, pentagonal, Allen-type cross-sections

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Milling Processes (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Abstract

The present invention pertains to a screw (4) with removable tip section comprising a shank (41) and a tip section (42); wherein the shank (41) has a first threaded section (412) including an upper (412a) and a lower (412b) threaded sections defined thereon with different outer diameters (D1a, D1b) and a recess (415) defined at the surface of an end face (414); further an insertion (423) of the tip section (42) includes a coincident shape with the recess (415). In this manner, the shank (41) would be smoothly driven into the metal objects (5) without being interfered or damaging the first threaded section in time of screwing; After screwing in, the tip section is alternatively removed from the shank, whereby a wrench (6) is freely put into the recess to tighten or loosen the screw so as to increase the convenience of using.

Claims (4)

1. A screw (4) with removable element comprising:

a shank (41) and a tip section (42); wherein, said shank (41) comprising a shank body (411), a first threaded section (412) extending around said shank body (411), a head (413) disposed at one end of said shank body (411), and an end face (414) disposed at the other end thereof, opposite to said head (413); wherein said end face (414) having a recess (415) defined thereon; said tip section (42) comprising a body (421), a tip portion (422)disposed at one end of said tip body (421), and an insertion (423) extending axially from the other end thereof for being removably inserted into said recess (415).

characterized in that said first threaded section (412) has an upper threaded section (412a) located adjacent to said head (413) and a lower threaded section (412b) located adjacent to said end face (414); an outer diameter (D1a) of said upper threaded section (412a) is greater than an outer diameter (D1b) of said lower threaded section (412b).
2. A screw (4) with removable element comprising:

a shank (41) and a tip section (42); wherein, said shank (41) comprising a shank body (411), a first threaded section (412) extending around said shank body (411), a head (413) disposed at one end of said shank body (411), and an end face (414) disposed at the other end thereof, opposite to said head (413); wherein said end face (414) having a recess (415) defined thereon; said tip section (42) comprising a tip body (421), a tip portion (422) disposed at one end of said tip body (421), and an insertion (423) extending axially from the other end thereof for being removably inserted into said recess (415).

characterized in that said first threaded section (412) has an upper threaded section (412a) located adjacent to said head (413) and a lower threaded section (412b) located adjacent to said end face (414); said tip section (42) further provides with a second threaded section (424) disposed between said tip portion (422) and said insertion (423), so that said first threaded section (412) can engage to said second threaded section (424) by said insertion (423) accurately fitting with said recess (415).
3. The screw as claimed in claim 2, wherein said threaded sections (412a .cndot. 412b .cndot. 424) have the same pitches and respectively have outer diameters (D1a .cndot. D1b .cndot. D2); the outer diameter (D1a) of said upper threaded section (412a) is greater than the outer diameter (D2) of said second threaded section (424), and the outer diameter (D2) of said second threaded section (424) is greater than the outer diameter (D1b) of said lower threaded section (412b).
4. The screw as claimed in claim 2, wherein said threaded sections (412a .cndot. 412b .cndot. 424) have the same pitches and respectively have outer diameters (D1a .cndot. D1b .cndot. D2); the outer diameter (D1a) of said upper threaded section (412a) is greater than the outer diameter (D1b) of said upper threaded section (412b), and the outer diameter (D1b) of said upper threaded section (412b) is greater than the outer diameter (D2) of said second threaded section (424).
CA 2616478 2007-12-28 2007-12-28 Fastener with removable element Expired - Fee Related CA2616478C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA 2616478 CA2616478C (en) 2007-12-28 2007-12-28 Fastener with removable element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2616478 CA2616478C (en) 2007-12-28 2007-12-28 Fastener with removable element

Publications (2)

Publication Number Publication Date
CA2616478A1 true CA2616478A1 (en) 2009-06-28
CA2616478C CA2616478C (en) 2011-01-11

Family

ID=40821859

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2616478 Expired - Fee Related CA2616478C (en) 2007-12-28 2007-12-28 Fastener with removable element

Country Status (1)

Country Link
CA (1) CA2616478C (en)

Also Published As

Publication number Publication date
CA2616478C (en) 2011-01-11

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20141229