US3604035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floating tap and tap holder
Assignee: Individual
•
Filing: 1968-02-05
•
Granted: 1971-09-14
•
Expires: 1988-02-05
Abstract
Abstract A tap and tap holder combination in which the tap has an elongated straight fluted shank. The tap holder has a shank portion for mounting in a machine spindle and a socket portion having an axial socket bore and a longitudinal internal groove mounting a longitudinal lug therein. The tap is loosely mounted within the socket bore with the longitudinal lug projecting into the tap shank flute.
Inventors
- 👤 Grover Edward Hendricks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:12
CPC Classifications
B; B23; B23Q; B23Q1/00; B23Q1/0009; B23Q1/0018; B23Q1/0027; B23Q1/0036; B23G; B23G1/00; B23G1/44; B23G1/46; B23G5/00; B23G5/02; B23G5/06; B23G5/064
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
173 words
In combination, a threading tap having a threaded portion and an integral elongated shank, said shank having at least one longitudinal straight flute therein, a tap holder having a shank portion and a socket portion, said socket portion having a continuous rigid annular wall and an axial bore interrupted by a longitudinal groove, a longitudinal lug seated in said groove and projecting into said socket bore, means retaining said lug in said groove, said tap shank disposed within said socket bore, means carried by said holder socket portion spaced from said lug and releasably interlocked with said tap shank for restraining said tap against fore and aft longitudinal movement within said holder, said tap shank spacedly fitting within said socket bore with said lug seating loosely in a tap shank flute when said tap shank is interlocked within said socket bore by said taprestraining means so as to restrain rotation of said shank in said bore and to permit lateral self-centering movement of said tap relative to said holder during the tapping operation.
Claim 2
Dependent Claim
173 words
In combination, a threading tap having a threaded portion and an integral elongated shank, said shank having at least one longitudinal straight flute therein, a tap holder having a shank portion and a socket portion, said socket portion having a continuous rigid annular wall and an axial bore interrupted by a longitudinal groove, a longitudinal lug seated in said groove and projecting into said socket bore, means retaining said lug in said groove, said tap shank disposed within said socket bore, means carried by said holder socket portion spaced from said lug and releasably interlocked with said tap shank for restraining said tap against fore and aft longitudinal movement within said holder, said tap shank spacedly fitting within said socket bore with said lug seating loosely in a tap shank flute when said tap shank is interlocked within said socket bore by said taprestraining means so as to restrain rotation of said shank in said bore and to permit lateral self-centering movement of said tap relative to said holder during the tapping operation.
Claim 3
Dependent Claim
62 words
The combination tap and tap holder of claim 1, wherein said tap shank has a circumferential groove formed therein, said holder socket portion has a threaded radial bore in communication with said shank groove when said tap is positioned within said holder, and wherein said tap-restraining means includes a threaded member received in said radial bore and positioned in said shank groove.
Claim 4
Dependent Claim
71 words
The combination tap and tap holder of claim 1, wherein said tap shank has a circumferential groove therein, said holder socket portion has a radial bore which communicates with said shank groove when said tap is positioned within said socket bore, and said tap-restraining means includes a member slidably mounted within said radial bore and a releasable means for positioning said member with a portion thereof projecting into said shank groove.
Claim 5
Dependent Claim
92 words
The combination tap and tap holder of claim 1, wherein said tap has a longitudinal bore and a radial bore in communication with said longitudinal bore, said radial bore having an opening in a said tap shank flute at the threaded portion of said tap, said holder having a passage in communication with said socket bore and tap longitudinal bore and adapted for connection with a coolant supply, and a resilient seal means interposed between said tap and holder socket portion at parts thereof surrounding said tap longitudinal bore and holder passage.
Claim 6
Dependent Claim
65 words
The combination tap and tap holder of claim 4, wherein a collar is journaled about said holder at the mouth of said holder passage, one of said collar and holder having a circumferential groove in communication with said holder passage and adapted for connection with a coolant supply means, and circumferential seal means between said collar and said holder at opposite ends of said collar.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |