Patent US3797352A successfully refreshed from Google Patents.
US3797352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for keying and locking elements to their retainers
Assignee: Dayton Progress Corp
•
Filing: 1973-01-26
•
Granted: 1974-03-19
•
Expires: 1993-01-26
Abstract
Abstract This is a system and apparatus for keying and locking tools and like elements such as punches and die and guide buttons in the appropriate bores of their retainers. The system requires the formation of a flat on the head end of the element to be inserted and locked in a retainer bore while the wall of the bore to position opposite the flat is drilled and reamed, in an axial sense, to provide parallel pin holes which open at one side to the bore. Each pin hole receives a dowel type pin which, however, has a flat along one side portion. The flat on the pin is positioned to be exposed to the bore and to generally face the flat on the inserted tool. The dowel pins are specially designed to include a taper which enables a preliminary non-seated positioning of the respective pins in their holes while the related tool is inserted in the associated bore, whereupon each pin is rotatively positioned as required to abut the flat on the inserted tool. The pins are then driven to a seated locking position referenced to the flat on the tool. The use of plural pins, so formed and utilized, eliminates the need for close tolerance in machining the related parts and insures a precise and simple procedure in the locking of a tool or other element in a desired orientation and place.
Inventors
- 👤 R Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:00
CPC Classifications
B; B26; B26F; B26F1/00; B26F1/38; B26F1/44; B21; B21D; B21D28/00; B21D28/24; B21D28/34; B21D37/00; B21D37/10; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17761; Y10T279/17854; Y10T83/00; Y10T83/929; Y10T83/9457; Y10T83/9473; Y10T83/9483
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
151 words
Apparatus for locking an element in a required position of use, within a bore or recess of a retainer, characterized by a flat formed on one side portion of said element which disposes in said bore or recess, said retainer having a plurality of holes or cavities therein opening to the said bore or recess in the area of said flat and means received in each said hole or cavity at least a portion of which projects in said bore or recess to abut said flat, the projected portions of said means in said holes or cavities providing for selective and plural engagement of said flat at relatively spaced surface portions thereof to precisely position said flat and said element thereby in a required position of use and said means within said holes or cavities providing means to fix said element in place by a locking engagement thereof to said flat.
Claim 2
Dependent Claim
151 words
Apparatus for locking an element in a required position of use, within a bore or recess of a retainer, characterized by a flat formed on one side portion of said element which disposes in said bore or recess, said retainer having a plurality of holes or cavities therein opening to the said bore or recess in the area of said flat and means received in each said hole or cavity at least a portion of which projects in said bore or recess to abut said flat, the projected portions of said means in said holes or cavities providing for selective and plural engagement of said flat at relatively spaced surface portions thereof to precisely position said flat and said element thereby in a required position of use and said means within said holes or cavities providing means to fix said element in place by a locking engagement thereof to said flat.
Claim 3
Dependent Claim
26 words
Apparatus as in claim 1 characterized by said holes being axially directed in a generally parallel orientation and said means received therein having a pin-like form.
Claim 4
Dependent Claim
68 words
Apparatus as in claim 2 characterized by there being two said holes the axes of which are generally parallel to the axis of said bore or recess, said means of pin-like form including surface portions which project laterally into said bore or recess, and by rotative position thereof are adapted to engage selected portions of the flat on said element to orient and fix the same in place.
Claim 5
Dependent Claim
44 words
Apparatus as in claim 3 wherein said means of pin-like form having a longitudinally tapered surface portion facilitating the introduction thereof in said holes and the cross section thereof being determinative of the extent said surface portions project laterally into said bore or recess.
Claim 6
Dependent Claim
34 words
Apparatus as in claim 4 wherein said means of pin-like form include flatted surface portions which may be presented interiorly of said bore or recess to abut relatively spaced surface portions of said flat.
Claim 7
Dependent Claim
64 words
Die apparatus as in claim 1 wherein said element is a die tool the head end of which has an external flange seating in a complementarily expanded portion of said bore or recess, said flat being provided on said flange and said means received in each said hole or cavity having flatted portions positioning said tool by inter-relation with the flat on said flange.
Claim 8
Dependent Claim
105 words
Apparatus for locking an element in a required posItion of use, within a bore or recess of a retainer, a portion of said element disposing within said bore or recess, characterized by said retainer having a plurality of holes or cavities portions of which are open to said bore or recess and means disposing partially in said bore or recess and in said holes or cavities arranged to effect a position and lock of said element to said retainer in a required position of use, said means including a pair of pins the positions of which are determinative of the fixed position of said element.
Claim 9
Dependent Claim
105 words
Apparatus for locking an element in a required posItion of use, within a bore or recess of a retainer, a portion of said element disposing within said bore or recess, characterized by said retainer having a plurality of holes or cavities portions of which are open to said bore or recess and means disposing partially in said bore or recess and in said holes or cavities arranged to effect a position and lock of said element to said retainer in a required position of use, said means including a pair of pins the positions of which are determinative of the fixed position of said element.
Claim 10
Dependent Claim
45 words
Apparatus as in claim 7 wherein said holes or cavities comprise a pair of laterally spaced holes or cavities and said pins dispose partially therein and partially in said bore or recess to position and fix said element by direct engagement with spaced portions thereof.
Claim 11
Dependent Claim
45 words
Apparatus as in claim 7 wherein a side portion of said element includes a flatted portion, said pins are non-circular in cross section and said element and pins are rotatable to establish a required relation therebetween to determine the desired fixed position of said element.
Claim 12
Dependent Claim
28 words
Apparatus as in claim 9 wherein a plate-like insert is interposed between said pins and said flatted portion of said element to lock said element in its retainer.
Claim 13
Dependent Claim
66 words
Apparatus as in claim 7 wherein said pins have a generally parallel spaced relation and a non circular cross section in respect to at least those portions thereof partially in said holes or cavities and partially in said bore or recess and the rotation thereof providing spaced points within said recess or cavity which determine the required position of said element with respect to said retainer.
Claim 14
Dependent Claim
50 words
Die apparatus as in claim 7 wherein said element is an operative insert in a tool or die plate and said flat is formed thereon and said pins including flatted portions functionally related to said flat to control the rotative position thereof in said bore or recess in said retainer.
References Cited (Backward Citations)
US3535967A
Cited
US3640170A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |